Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1997-07-28
1999-06-29
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C08J 302
Patent
active
059169354
ABSTRACT:
A process of preparing a concentrate which is useful as a thickener for aqueous compositions is provided. The process comprises obtaining a solution of an associative thickener compound in an organic solvent capable of forming a low boiling azeotrope with water. The solution is essentially free of water at this point and is at a temperature above the boiling point of said low boiling azeotrope. Water is added to said solution and an azeotrope of water and said organic solvent is distilled. The rate of addition of water is sufficient to replace said azeotrope with water, but is insufficient to cause a second phase to form in the resulting mixture of said solution and said water. The process yields a concentrate of an associative thickener in water, which concentrate is essentially free of volatile organic solvents.
REFERENCES:
patent: 4079028 (1978-03-01), Emmons et al.
patent: 4138381 (1979-02-01), Chang et al.
patent: 5130369 (1992-07-01), Hughes et al.
patent: 5268397 (1993-12-01), Larson
patent: 5380800 (1995-01-01), Bender
patent: 5424469 (1995-06-01), Jakobson
patent: 5466719 (1995-11-01), Jakobson
patent: 5723538 (1998-03-01), Fischer
Encyclopedia of Polymer Science and Engineering, Second Edition, John Wiley & Sons, Inc., New York, NY, 1986, vol. 6, pp. 225-273.
Encyclopedia of Polymer Science and Engineering, John Wiley & Sons, Inc., New York, NY, 1988, vol. 12, pp. 28-43.
Grinstein Reuben H.
Shah Dipak
Wiggins Michael
Henkel Corporation
Jaeschke Wayne C.
Michl Paul R.
Millson Jr. Henry E.
Wood John Daniel
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