Publications and Patents

 1. R. GRATTON and P. PRUSZYNSKI, Cationic Demand Survey of Paper Machines: How Can We Measure and Use It? Pulp and Paper Canada, 1994 

2. R. LaROUX, P. PRUSZYNSKI, R. ARMSTRONG, J.LIN, M. POLVERARI and A.P. ANGELAC, Stickies Control in Newsprint Application - Review, Mechanisms and Novel Approach, Pulp and Paper Canada, 98 (9), 54,1997 

3. T. TOMNEY, P. E. PRUSZYNSKI, J.R. ARMSTRONG and R. HURLEY,Controlling Filler Retention In Mechanical Grades, Pulp and Paper Canada, 99 (8), 66,1998 

4. A. DECHANDT, T. WATKINS, P. PRUSZYNSKI, Total approach to deposit control on newsprint machine using TMP and DIP pulp mix - from specialized fixation of individual pulps to retention, Appita Journal 57(1), 13-18, 2004. 

5. PRZEMYSLAW PRUSZYNSKI and REGINA JAKUBOWSKI - Understanding sensitivity of retention programs to wet end chemical contamination in TMP-based newsprint furnish, APPITA Journal, 59(2), 114, 2006 

6. INGO VON MEDVEY, JOGEIR MUNKEBY, PAUL PUIATTI AND PRZEM PRUSZYNSKI, The use of white water closed loop consistency control to provide chemical savings and more stable wet end chemistry conditions of a newsprint machine, APPITA Journal, 61(4), 266-276,(2008) 

7. PRZEM PRUSZYNSKI – Modern Calendering and Specialty Chemicals – from a supplier’s perspective, Pulp and Paper Canada, 109(2), 16-19 (2008) 

8. L. WELLS, G. KEECH, L.H.ALLEN, A.GAGNE, S.PERSI, P.PRUSZYNKI and A.ROY – Application of pyrolysis GC/MS in the development of a chemical retention and stickies control program for a 100% recycled newsprint, Pulp and Paper Canada, 109 (11), 17-22 (2008) 

9. PRZEMYSLAW PUSZYNSKI, PATRICK SURTEVANT and CRSTOPHER SMITH – Neutral pH conversions in mechanical grades – Pulp and Paper Canada, January 2010 

10. PRZEMYSLAW PRUSZYNSKI - Retention Program and Wet End Chemistry Management With Focus On Quality And Efficiency Of Modern Calendered Grades – Pulp and Paper Canada, March 2010 

11. PRZEMYSLAW PRUSZYNSKI – Managing Anionic Detrimental Substances in Peroxide Bleaches Mechanical pulps – Unique Benefits of Enzymatic Treatment, APPITA Journal, 64(2), 168-174, 2011 

12. PRZEMYSLAW PRUSZYNSKI – Pulp and Paper International (PPI) – Fine Tuning Opportunities in Wood Extractives Control – April 2011 

13. PRZEMYSLAW PRUSZYNSKI, DAVID SIROIS – PULP AND PAPER INTERNATIONAL (PPI) - Increasing HYP presence in fine paper furnish – challenges and remedies, December 2012 

14. PRZEMYSLAW PRUSZYNSKI and DAVID SIROIS – Przeglad Papierniczy (Papermaking Review –Poland) Operating Paper Machine at Increased Wet-End Chemical Contamination Level 

15. PRZEMYSLAW PRUSZYNSKI – JFPR+ Wet endchemistry principles revisited , J-FOR+, 6(2), 56(2017) 

16. Lebo XU, PRZEMYSLAW PRUSZYNSKI, and PETER HART, Impact of Conductivity on Papermaking Operations – Review and New Examples – TAPPI Journal, 16(10, 567(2017) 

17. PRZEMYSLAW PRUSZYNSKI, RUBEN MANZANARES, HYBRID Coagulants – expanding chemistry toolbox for deposit control in papermaking systems, World Pulp and Paper, 90-99, 2018 

18. PRZEMYSLAW PRUSZYNSKI, LEBO XU, and PETER HART, Water chemistry challenges in pulping and papermaking-fundamerntals and practical insights: Part 1: Tappi Journal, 21(6), 313(2022).

19. PRZEMYSLAW PRUSZYNSKI, LEBO XU, and PETER HART, Water chemistry challenges in pulping and papermaking-fundamerntals and practical insights: Part 2: Conductivity, charge and hardness. Tappi Journal 22(6), 423(2023).

  20. Ito, R., Nakagawa, A., Xu, L., Hart, P.W., Pruszynski, P., Amphoteric Dry Strength Chemistry Approach to Deal with Low-Quality Fiber and Difficult Water Chemistry Conditions in the Asian and North American Markets, TAPPI Journal, 23:1, 47(2024)

1. Saint John, N.B., CPPA Atlantic Canada Technical Section Meeting 

2. P. Pruszynski, R. Gratton, CATIONIC DEMAND SURVEY, CPPA Annual Meeting, Montreal, 1994 

3. P. Pruszynski, R. LaRoux (Donohue, now ACI) , STICKIES CONTROL- NOVEL APPROACH, CPPA Annual Meeting, Montreal, 1995 

4. P. Pruszynski, T. Tomney (Irving Paper) , CONTROLLING FILLER RETENTION, CPPA Annual Meeting, 1997 

5. R. Le Roux, P. E. Pruszynski, et.al., CONTROL OF STICKIES CONTAMINANTS IN NEWSPRINT APPLICATIONS – REVIEW, MECHANISMS AND NOVEL APPROACH, Pulp and Paper Canada, 98(9), 315, 1997. 

6. P. Pruszynski, P. Stewart (Beak, now Simmons), IMPACT OF ZERO DISCHARGE Minneapolis, Tappi Environmental Conference, Minneapolis, 1997 

7. P. Pruszynski, T. Tomney (Irving Paper) CONTROLLING FILLER RETENTION Whistler, CPPA West Conference, Whistler 1997 

8. P. Pruszynski, G. Orlowski (MIllar Western now Tembec) CONTROL OF CATIONIC DEMAND IN PULP MILL, CPPA West Conference, Whistler 2003 

9. P. Pruszynski, T. Tomney (Irving Paper), STABILIZATION OF FILLER RETENTION – INPAP, Duszniki, Poland, 1998 

10. P. Pruszynski, A. Dunham and S. Govoni - FILLER RETENTION-RECENT CHALLEGES AND POSSIBLE SOLUTIONS - TAPPI Mega Conference, Atlanta 1999 

11. P. Pruszynski, A. Kuhnert and X. Cardoso - RETENTION – IMPACT ON FORMATION - PITA Conference, Canterbury, 1999 

12. P. Pruszynski, R. Jakubowski - IMPACT OF CONDUCTIVITY AND CATIONIC DEMAND ON DRAINAGE OF TMPBASED NEWSPRINT FURNISH - APPITA Conference, Rotorua, 2002 

13. P. Pruszynski, R. Jakubowski, X. Cardoso and Dr. P. Schyns - SOURCES OF VARIABILITY AT THE WET-END OF MECHANICAL GRADES, THEIR IMPACT AND CONTROL – Austrian Papermaking Technical Conference, Graz, 2002 

14. Przemyslaw Pruszynski, Xavier Cardoso and Bjorn Kamlin - CHEMISTS APPROACH TO STABILIZATION OF PERFORMANCE OF WET-END OF PAPER MACHINE - XIV International Papermaking Conference PROGRESS ’02 – Gdansk, Poland, 2002 

15. Richard Gratton (Domtar) and Przemyslaw Pruszynski - POTENTIAL INCOMPATIBILITIES IN APPLICATION OF CHEMICAL ADDITIVES IN PAPERMAKING . WHAT MAY GO WRONG…? - 89th Annual Meeting, PAPTAC, Montreal 2003 

16. Alcy Dechandt, Troy Watkins (Norske Skog) and Przemyslaw Pruszynski - TOTAL APPROACH TO DEPOSIT CONTROL ON NEWSPRINT MACHINE USING TMP AND DIP PULP MIX – FROM SPECIALIZED FIXATION OF INDIVIDUAL PULPS TO RETENTION- APPITA Conference, Melbourne, 2003 

17. Przemyslaw Pruszynski and Regina Jakubowki - UNDERSTANDING SENSITIVITY OF RETENTION PROGRAMS TO WET END CHEMICAL CONTAMINATION IN TMP-BASED NEWSPRINT FURNISH – APPITA Journal, 59(2), 114 (2006). 

18. P. Pruszynski, Factors affecting stability of Newsprint Paper Machine – FROM UNDERSTANDING TO STABILIZATION EFFORTS – PAPTAC, PACWEST Conference, Harrison Springs, 2005 

19. 32. Richard Gratton (Domtar) and Przemyslaw Pruszynski - POTENTIAL INCOMPATIBILITIES IN APPLICATION OF CHEMICAL ADDITIVES IN PAPERMAKING . WHAT MAY GO WRONG., PIRA Conference, Boston, 2005 

20. Przemyslaw Pruszynski, Christopher Smith mand Patrick Sturtevant - NEUTRAL PH CONVERSION IN MECHANICAL GRADES – FINE BALANCE OF CHEMICAL AND MECHANICAL CONTRIBUTIONS - PAPTAC 92nd Annual Meeting, Montreal, 2006 

21. Przemyslaw Pruszynski and Patrick Sturtevant, LINTING IN NEWSPRINT APPLICATIONS – HOLISTIC APPROACH IN UNDERSTANDING ITS SOURCES, PREDICTIVE TESTING AND COMBATING STRATEGIES. PACWEST PAPTAC Conference, Jasper 2006. 

22. Przemyslaw Pruszynski, Laura Sherman, Michael Quinn and Bjorn Kamlin, ENZYMATIC TREATMENT OF ANIONIC DETRIMENTAL SUBSTANCES IN HYDROGEN PEROXIDE BLEACHED MECHANICAL FURNISHES, Paper and Coating Chemistry Symposium, Stockholm. 2006 

23. Layne Wells, Greg Keech, Larry Allen, Alain Gagné, Steve Persi, Alain Roy and Przem Pruszynski DEVELOPMENT OF A COMPREHENSIVE CHEMICAL PROGRAM FOR RETENTION, DRAINAGE AND STICKIES CONTROL FOR A NEWSPRINT MACHINE USING A 100% DEINKED FURNISH, 93rd PAPTAC, Annual Meeting, Montreal, 2007 

24. Laura. M. Sherman, Steve. T. Govoni, Jane. B. Wong Shing, Przem Pruszynski, ON-MACHINE EFFICIENCY THROUGH ENZYMATIC CONTROL OF WET-END CONTAMINANTS PTS Conference, Munich Germany, 2006 

25. Przem Pruszynski, Michael Quinn, Bjorn Kamlin, Laura Sherman, Jane Wong-Shing, and Steve Govoni MANAGING ANIONIC DETRIMENTAL SUBSTANCES IN PEROXIDE BLEACHED MECHANICAL PULPS – UNIQUE BENEFITS OF ENZYMATIC TREATMENT. APPITA Conference, Brisbane, May 2007. 

26. Ingo Von Medvey, Jogeir Munkeby, Paul Puiatti and Przem Pruszynski, THE USE OF WHITE WATER CLOSED LOOP CONSISTENCY CONTROL TO PROVIDE CHEMICAL SAVINGS AND MORE STABLE WET END CHEMISTRY CONDITIONS OF A NEWSPRINT MACHINE, APPITA Conference, Rotorua, 2008 

27. Przem Pruszynski, Modern Calendering – Process stability, Sheet structure, Uniformity and System Cleanliness Requirements, PAPTAC Conference, PACWEST, Jasper 2008 

28. Przemyslaw Pruszynski, IMPORTANCE OF WET END PROCESS STABILITY, SHEET STRUCTURE AND SYSTEM CLEANLINESS REQUIREMENTS ON MODERN CALENDERING OPERATIONS – PAPTAC Annual Meeting, Montreal, 2009 (reprint available on request from PAPTAC or author) 

29. Przemyslaw Pruszynski and Ross Gray, INDUSTRY TRENDS AND DEVELOPMENT IN PAPERMAKING CHEMICAL TECHNOLOGY – PLENARY LECTURE, 7th International Paper and Coating Chemistry Symposium, Hamilton, Ont., Canada, June 2009 

30. Przemyslaw Pruszynski – International Symposium of Emerging Technologies in Pulp and Paper, KEYNOTE LECTURE, Guangzhou China, November 2010 

31. Przemyslaw Pruszynski – KEYNOTE LECTURE – IMPACT OF HIGH YIELD PULPS ON WET END CHEMISTRY OF TYPICAL FINE PAPER APPLICATIONS - Understanding and Alternative Corrective Strategies INTERNATIONAL MECHANICAL PULPING CONFERENCE, XI’AN CHINA, JUNE 2011 

32. Przemyslaw Pruszynski - UNDERSTANDING AND CONTROLLING WET-END CHEMISTRY RELATED TO HYP TO FINE PAPERS, PAPTAC Annual Meeting, Montreal, February 2012 

33. Przemyslaw Pruszynski – RETENTION PROGRAMS – TREND REVIEW- Norwegian Paper Research Institute PFI, Trondheim, October 2011 

34. Przemyslaw Pruszynski – MODERN APPROACH TO RETENTION PROGRAMS- CHEMISTRY, APPLICATION, SENSITIVITIES AND IMPACT ON SHEET PROPERTIES – International Conference of Pulping, Papermaking and Biotechnology – Nanjing, November 2012 

35. Przemyslaw Pruszynski - INCREASING CONTENT OF HIGH YIELD PULPS IN FINE PAPER FURNISH - BENEFITS, CHALLENGES AND SOLUTIONS – International Pulp and Paper Conference, Kudowa Zdroj, Poland 

36. Przemyslaw Pruszynski - ENHANCING BEST PRACTICES IN EXTRACTIVES CONTROL ON PAPER MACHINETHROUGH IMPLEMENTATION OF NEWEST RESEARCH INFORMATION – REVIEW, PaperWeek 100th, Montreal – February 2014 

37. Zongquan, Qijie Chen, Zhibin He, Przem Pruszynski and Yonghao Ni, APPLICATION OF SURFACE SIZING ADDITIVES TO ENHANCE THE OPTICAL PROPERTIES OF HYP-CONTAINING PAPER - International Mechanical Pulping Conference, Helsinki, June 2014 

38. P.Pruszynski, RECENT DEVELOPMENTS IN PAPERMAKING CHEMICALS, Przeglad Papierniczy 9, 445-551, 2014 

39. P.Pruszynski, IMPACT OF WET-END CHEMISTRY ON PAPER MACHINE PRODUCTIVITY AND PRODUCT QUALITY – PaperWeek 101st, PAPTAC, Montreal, 2015 

40. L. Xu, P. Pruszynski, P. Hart, IMPACT OF CONDUCTIVITY ON PAPERMAKING OPERATIONS – REVIEW AND NEW EXAMPLES” , TAPPI Gulf Section, 2017 

41. L. Xu, P. Pruszynski, P. Hart, IMPACT OF CONDUCTIVITY ON PAPERMAKING OPERATIONS – REVIEW AD NEW EXAMPLES – TAPPI PaperCon, Minneapolis, 2017 

  PAPERS

1. JARCZEWSKI A., PRUSZYNSKI P., and LEFFEK K.T., Variations of primary deuterium isotope effect with solvent composition for the reaction of bis(4-nitrophenyl)methane with tert-butoxide in tert-butanol-toluene mixtures. Can.J.Chem., 53, 1176 (1975). 

2. JARCZEWSKI A., PRUSZYNSKI P.,and LEFFEK K.T., Kinetics of proton and deuteron transfer from a,4-dinitrotoluene to1,8-bis(dimethylamino)naphtalene in alcoholic solvents., J.Chem.Soc., Perkin Trans., II, 814, 1977. 

3. PRUSZYNSKI, P., JARCZEWSKI, A., Kinetics of proton transfer reactions of 2,4,6-trinitrotoluene and 1,1,3,3-tetramethylguanidine in polar aprotic solvents.  Rocz.Chem.(now Pol.J.Chem.) 51, 2178 (1977). 

4. JARCZEWSKI A., and PRUSZYNSKI P., Factors determining the kinetic isotope effects in proton transfer reactions. Wiad.Chem., 32, 693 (1978). 

5. JARCZEWSKI A., PRUSZYNSKI P., and LEFFEK K.T., Kinetic isotope effects and tunneling in the proton transfer reaction between 2,4,6-trinitrotoluene and 1,1,3,3tetramethylguanidine in dimethylformamide solvent. Can. J. Chem., 57, 669 (1979). 

6. PRUSZYNSKI P., and JARCZEWSKI A., Determination of kinetic isotope effects in the proton transfer reactions. Chapter in "Physical methods of determination of mechanisms of organic reactions. Ed. DUTKIEWICZ E., A.Mickiewicz University Press, Poznan, 1979. 

7. LEFFEK K.T., and PRUSZYNSKI P., Kinetics of proton transfer reactions from 1-(4-nitrophenyl)-1-nitro-ethane to 2,7-dimethoxy-1,8-bis(dimethylamino)naphthalenein acetonitrile solvent. Can.J.Chem., 59, 3034 (1981). 

8. LEFFEK K.T., and PRUSZYNSKI P., Kinetics of proton and deuteron transfer from 1-(4-nitrophenyl)-1-ni-troethane to 1,8-diazabicyclo[5.4.0]undec-7-ene in aprotic solvents. Can.J.Chem., 60, 1692 (1982). 

9. JARCZEWSKI A., PRUSZYNSKI P., and LEFFEK K.T., Kinetics and isotope effects in the proton transfer reactions of 4-nitrophenylphenylcyanomethanewith 1,1,3,3tetramethylguanidine in acetonitrile and benzonitrile solvents. Pol.J.Chem., 58, 1175 (1984). 

10. JARCZEWSKI A., PRUSZYNSKI P., MAHMOOD K.,and LEFFEK K.T., Kinetics and isotope effects of the proton transfer reaction of 4-nitrophenylphenylcyanomethanewith 2-phenyl-1,1,3,3tetramethylguani-dine in acetonitrile, benzonitrile and dimethylsulfoxide solvents. Can.J.Chem., 62, 954 (1984). 

11. PRUSZYNSKI P., CHIANG Y., KRESGE A.J., SCHEPP N.P., and WALSH P.A., Kinetics of ketonization of isobutyrophenone enol in aqueous solution. Bronsted relations and analysis of data by Marcus and Lewis-More O'Ferrall rate theories. J.Phys.Chem., 64, 1021 (1986). 

12. JARCZEWSKI A., SCHROEDER G., PRUSZYNSKI P., and LEFFEK K.T. Isotope effects and activation parameters for the proton transfer reaction from 1-(4-nitrophenyl)-1-nitroethane to free anions and ion-pairs of cesium n-propoxide in n-propanol solvent. Can.J.Chem., 64, 1021 (1986). 

13. PRUSZYNSKI P., and JARCZEWSKI A., The influence of steric hindrance on the kinetic isotope effects in proton transfer reactions. J.Chem.Soc.Perkin Trans.,II, 1117, 1986. 

14. PRUSZYNSKI P., Synthesis and properties of phenyl substituted derivatives of 2-phenyl-1,1,3,3-tetramethylguanidine. Can.J.Chem., 65, 626 (1987). 

15. NOGAJ B., and PRUSZYNSKI P., The influence of tetramethylguanidynylsubstituent on the electronic distribution in molecules of chlorobenzenes studied by 35Cl-NQR spectroscopy. Magn.Res.Chem., 25, 301 (1987). 

16. PRUSZYNSKI P., Influence of steric hindrance in the molecules of substituted 2-phenyl-1,1,3,3-tetramethylguanidines on the kinetic isotope effects of their proton transfer reactions with 4-nitrophenylnitromethanein acetonitrile solvent. Can.J.Chem. 67, 1160 (1987). 

17. LEFFEK K.T., and PRUSZYNSKI P., Proton transfer reactions between ortho-methyl substituted derivatives of 4-nitrophenylphenyl- cynomethane and nitrogen bases in acetonitrile solvent. Can.J.Chem., 66, 1454 (1988). 

18. LEFFEK K.T., PRUSZYNSKI P., and THANAPAALASINGHAM K., Basicity of substituted 2-phenyl-1,1,3,3-tetramethylguanidines and other bases in acetonitrile solvent. Can.J.Chem., 67, 1454 (1989). 

19. KRESGE, A.J., PRUSZYNSKI P., STANG P.J, and WILLIAMSON B.L., Base-catalyzed hydrogen exchange and estimates of the acid strength of benzoyl- and trimethylsilylacetylene in aqueous solution. A correlation between acetylene pKa estimates and hydroxide ion catalytic coefficients for hydrogen exchange. J.Org.Chem. 56, 4808-11, 1991 

20. PRUSZYNSKI P. and LEFFEK K.T., Phenyltetramethylguanidines: substituent effect on rates and isotope effects in their reaction with bis(4nitrophenyl)cyanomethanein acetonitrile, Can.J.Chem. 69, 205, 1991. 

21. PRUSZYNSKI P., LEFFEK K.T., BORECKA, B. and CAMERON T.S., Synthesis and structure of the picrate salt of 2,2'-bis[2N-(1,1,3,3-tetramethylguanidino)]biphenyl. Acta Cryst. C48, 1638 - 41 (1992). 

22. CHIANG Y., KRESGE A.J., PRUSZYNSKI P., SCHEPP N.P., and WIRZ J., Mandelic acid enol: Direct observation of a simple carboxylic acid enol and determination if its pKa in aqueous solution; Estimates of keto-enol equilibrium constant and carbon acidity of mandelic acid Angew.Chemie Int.Ed.Eng. 29, 792 (1990) 

23. CHIANG, Y., GRANT, A.S., KRESGE A.J., PRUSZYNSKI, P., SCHEPP, N.P., WIRZ, J., Flash Photolytic Generation and Study of Ynamines. First observation of Primary and Secondary Ynamines in Solution, Angew. Chem.Int.Ed.Eng. 30, 1356 (1991). 

24. CHIANG, Y., KRESGE, A.J., PRUSZYNSKI, P., SCHEPP, N.P., WIRZ, J., The mechanism of acylcarbene insertion into O-H bonds- Direct observation of the Enol of a carboxylic acid ester in aqueous solution. Angew. Chem.Int.Ed.Eng. 30, 1366 (1991). 

25. CHIANG, Y.; KRESGE, A. J.; PRUSZYNSKI, P.; SCHEPP, N. P.; WIRZ Mandelic acid enols: determination of the acidity in aqueous solutions and estimation of keto-enol equilibrium constants and CH acidity of mandelic acid., Angew. Chem. (1990), 102(7), 810-12. 

26. KRESGE A.J., PRUSZYNSKI P., and STANG P.J., Base catalyzed hydrogen exchange of ethynylphenyliodonium triflate. Influence of phenyliodonium substituent on acidity of acetylene 

27. CHIANG Y., A.J.KRESGE and PRUSZYNSKI P., Keto-Enol Equilibria in the Pyruvic Acid System: Determination of the Keto-Enol Equilibrium Constants of Pyruvic Acid and Pyruvate Anion and the Acidity Constant of Pyruvate Enol in Aquous Solution. J. Am. Chem. Soc., 114, 3103 (1992) 

28. KRESGE, A.J., PRUSZYNSKI P., STANG P.J., WILLIAMSON B.L., Base-Catalyzed Hydrogen Exchange and Estimates of the Acid Strength of Benzoyl- and (Trimethylsilyl)actylene in Aqueous Solution. A Correlation between Acetylene pKa Estimates and Hydroxide-Ion Catalytic Coefficients for Hydrogen Exchange. J. Org. Chem., 56, 4808-4811, 1991. 

29. GALEZOWSKI W., PRUSZYNSKI P., and LEFFEKK.T., Tetramethylguanidino-substituted pyrylium and thiopyrylium salts. Can. J. Chem., 70, 2390 (1992) 

30. DAWE R., GOPAL R., and PRUSZYNSKI P., Perfluorinated organic compounds. Chemical & Engineering News, June 19, 1991, p.2 

CONFERENCES:

1. 1980-Goettingen, West Germany, Royal Chemical Society Fast Reactions in Solution Discussion Group Meeting. 

2. 1982-Canterburry, England: Royal Chemical Society Mechanisms of Organic Reactions. 

3. 1984-West Berlin, Royal Chemical Society Fast Reactions in Solution Discussion Group Meeting. 

4. 1985-York, England:Royal Chemical Society Fast Reactions in Solution Discussion Group Meeting. 

5. 1985-Poznan, Poland: International Conference on Radio and Microwave Spectroscopy. 

6. 1987-Sackville, N.B., Royal Chemical Society Fast Reactions in Solution Discussion Group Meeting. 

7. 1987-Paris, France: IUPAC Conference - Physical Organic Chemistry. 

8. 1987-Halifax, N.S.: International Conference on the Mechanisms of Organic Reactions. 

9. 1990-Halifax, N.S.: Annual Chemical Institute of Canada Conference. 

10. 1990: Haifa, Israel: IUPAC Conference-Physical Organic Chemistry. 

11. 1992: Edmonton, Alta., Chemical Institute of Canada, Annual Conference 

1. US Patent 5,798,023 – Combination of Talc-Bentonite for deposition      control in papermaking processes
2. US Patent 5,942,087 – Starch retention  in      Paper and Board production
3. US Patent – 6,048,438 – Method to enhance the performance of      polymers and copolymers of acrylamide as flocculants and retention aid
4. US Patent – 6,099,689 - Production of paper and board products with      improved retention, drainage and formation
5. US Patent 6033524 - Selective retention of filling components and      improved control of sheet properties by enhancing additive pretreatment.

US Patent – 7,473,334 – Method of preparing modified diallyl-N,N-disubstituted ammonium halide polymers 

Received Jasper Mordon Memorial Prize for Significant Contribution to the Science and Technology of Papermaking – 2008

Member of Nalco Inventor's Hall 

Teaching TAPPI Wet-End Chemistry Course over 10 years period (2008-2019)

Delivered series of 4 Webinars for TAPPI in 2015

o TAPPI Technical Webinar – Wet-End Chemistry Fundamentals – 04/02/2015

o TAPPI Technical Webinar – Retention programs – 06/04/2015

o TAPPI Technical Webinar – Managing Extractives – 09/24/2015

o TAPPI Technical Webinar – Undesired Interactions between Chemical Additives, 11/12/2015

Adjunct Professor at McMaster University in Hamilton, Ontario 

Member of Board of Directors for Network of Centers of Excellence in Mechanical Pulps, CPPA, TAPPI, ACS and CIC 

Teaching CPPA (now PAPTAC) Professional Courses on:

o Pitch and Stickies Control

o Retention-Drainage and WetEnd Chemistry

Keynote lecture – International Woo Chemistry Symposium, Bratislava, Slovakia, 2004

· Teaching LINTING part of the PAPRICOURSE in Montreal, 2006

· Member of Technical sections of Newsprint and Mechanical Writing Grades - Pulp and Paper Technical Association of Canada

· Member of Technical Section of Fine Papers of Pulp and Paper Technical Association of Canada

· Member of International Scientific Committee of the 2009 Coating and Paper Chemistry Symposium 

· Session Chairman – 2nd Applied Pulp and Paper Molecular Modelling Symposium – Trois Riveres – 2009

· Keynote lecture – 7th International Coating and Paper Chemistry Symposium, Hamilton, Ont. 2009

· Session Chairman – 2nd International Modeling Symposium, Trois Reveres, Canada

· Keynote lecture – 4th International Emerging Technologies Symposium for Pulp and Paper, Guangzhou, China, 2010

· Sessions Chairman (Pitch and Stickies Control), 9th International Wood Chemistry Symposium. Tianjin, China, 2011

· Sessions Chairman - Pitch And Stickies Control), International Mechanical Pulping and Bleaching Conference, Xi’an, China, 2011

· Session Chairman – 3rd Applied Pulp and Paper Molecular Modelling Symposium. Montreal 2012

· Keynote Speaker – Norwegian Pulp and Paper Research Symposium – Trondheim, 2012

· Member of Technical and Organizing Committee of China- Canada HYP Network

· Taught a series of 5 Wet End Chemistry Webinars on request of Pulp and Paper Technical Association of Canada (PAPTAC) -2012

o PAPTAC Technical Webinar – Wet End Chemistry – Fundamentals – 10/19/2012

o PAPTAC Technical Webinar – Wet End Chemistry – Retention programs – 10/26/2012

o PAPTAC Technical Webinar – Managing Extractives – How to Operate Cleaner Paper machine -11/16/2012

o PAPTAC Technical Webinar – Mechanical Grades of Paper – Stability – 11/23/2012

o PAPTAC Technical Webinar – Understanding Compatibility of Chemical Applications – 12/03/2012

o PAPTAC Technical Webinar – Impact of Mechanical Pulps on Paper Machine Operation and Product Quality – 09/25/2015

o PAPTAC Technical Webinar – Fundamentals of Wet End Chemistry, 2018

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