Water-soluble copolymers based on olefinic sulfonic acids,...

Details Water-soluble copolymers based on olefinic sulfonic acids,... Water-soluble copolymers based on olefinic sulfonic acids,...

2007-04-10

2007-04-10

Pezzuto, Helen L. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S264000, C526S271000, C526S287000, C526S318200, C526S332000, C524S831000, C524S832000

Reexamination Certificate

active

10510855

ABSTRACT:
Water-soluble copolymers based on olefinic sulfonic acids, olefinic dicarboxylic acids, vinyl amides and vinyl ethers and/or allyl ethers and/or bisacryl derivatives are described as well as processes for their production and the use of these copolymers as water retention agents, thickeners or anti-segregation agents for aqueous building material systems that contain hydraulic binding agents such as cement, lime, gypsum, anhydrite etc. or for clay suspensions preferably based on bentonite.

REFERENCES:
patent: 5919300 (1999-07-01), Burge et al.
patent: 9-295913 (1997-11-01), None

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