Claims
- 1. A process for preparing acrylic polymers comprising aqueous-suspension polymerization carried out in the presence of 0.05-1% by weight, calculated on the suspension, of a stabilizer consisting of a polymer prepared by polymerizing: 60-100% by weight of a salt of a sulphoacrylamide of formula: ##STR3## where R.sub.1 represents a hydrogen atom or a --CH.sub.3 group, R.sub.2 and R.sub.3, like or different from each other, represent a hydrogen atom or an alkyl C.sub.1 -C.sub.4 radical and M represent an alkaline or alkaline-earth metal; and 0-40% by weight of at least an acrylic monomer.
- 2. The process according to claim 1, wherein the stabilizer consists of a polymer obtained by polymerizing: 70-90% by weight of monomer (I); and 10-30% by weight of acrylic monomer.
- 3. The process according to claim 1, wherein the stabilizer, diluted in water at 5% by weight at 25.degree. C., provides solutions having a Brookfield viscosity ranging from 0.5 to 10 Pa.s.
Priority Claims (1)
Number |
Date |
Country |
Kind |
20379 A/90 |
May 1990 |
ITX |
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Parent Case Info
This is a continuation of co-pending application Ser. No. 08/019,814, filed on Feb. 19, 1993 , which is a continuation of application Ser. No. 07/701,903, filed on May 17, 1991, both now abandoned.
Foreign Referenced Citations (5)
Number |
Date |
Country |
2323701 |
Apr 1908 |
FRX |
56-139510 |
Oct 1981 |
JPX |
56-161412 |
Dec 1981 |
JPX |
62-127309 |
Jun 1987 |
JPX |
1294714 |
Nov 1989 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Chemical Abstracts, vol. 82, 1975, p. 32, No. 98800b. |
Continuations (2)
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Number |
Date |
Country |
Parent |
19814 |
Feb 1993 |
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Parent |
701903 |
May 1991 |
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