Claims
- 1. A process for making the water soluble polymer which is poly(4-vinylpyridine) sodium carboxymethyl betaine chloride having a weight average molecular weight of about 5,000 to 1,000,000 which comprises reacting sodium chloroacetate with poly(4-vinyl-pyridine).
- 2. A process according to claim 1 wherein sodium chloroacetate is provided by reacting chloroacetic acid with sodium hydroxide in water.
Parent Case Info
This is a division of application Ser. No. 08/932,448, filed Sep. 19, 1997 now U.S. Pat. No. 5,776,879.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
2977341 |
Schuller et al. |
Mar 1961 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
932448 |
Sep 1997 |
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