Claims
- 1. An improved process for sulfoethylation of acrylamide containing polysoap polymer latices to produce stable sulfoethylated latex polymers with a Reduced Specific Viscosity (RSV) greater than the starting polymers which comprises reacting a polysoap water-in-oil latex of an acrylamide containing polymer having a molecular weight of from about one million to about 25 million with taurine or its salts at an elevated superatmospheric pressure and at temperatures above about 120.degree. C. in a reaction mixture containing from about 45 to 90% water for a period of from about 0.5 to about 6 hours, the resulting polymer having an RSV of at least 18.
- 2. A process according to claim 1 wherein the taurine salts used include alkali metal, alkaline earth metal, ammonium and amine salts of taurine.
- 3. A process according to claim 2 wherein the taurine salt is sodium taurate.
- 4. A process according to claim 1 wherein the RSV of the final polymer is 20 or above.
- 5. A process according to claim 1 wherein the reaction temperature is from about 120.degree. to 180.degree. C.
- 6. A process according to claim 1 wherein the acrylamide containing polymer latex reactant starting material is a copolymer of acrylamide and acrylic acid.
- 7. A process according to claim 1 wherein the acrylamide containing latex polymer reactant starting material has a molecular weight of from about 2 to 15 million.
- 8. A process according to claim 1 wherein the acrylamide containing polymer latex reactant is a copolymer of acrylamide and methacrylic acid.
- 9. A process according to claim 1 wherein taurine or its salts is employed in amounts of up to 50 mol % based on the total mer units content of the polymer.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 124,914 filed Nov. 24, 1987 now abandoned.
US Referenced Citations (9)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
124914 |
Nov 1987 |
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