Polyether-containing copolymer

Details Polyether-containing copolymer Polyether-containing copolymer

2007-07-13

2010-12-21

Bernshteyn, Michael M (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S318500, C526S317100

Reexamination Certificate

active

07855260

ABSTRACT:
Copolymers include two monomer components, a) an olefinic unsaturated monocarboxylic acid comonomer or an ester or a salt thereof of an olefinic unsaturated sulfuric acid comonomer or a salt thereof, and b) an ether comonomer of the general formula (I)Components a) and b) are present in amounts of from 30 to 90 mol-% and from 70 to 10 mol-%, respectively, and comonomer component a) is selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, isocrotonic acid, allylsulfonic acid, vinylsulfonic acid and a salt thereof or an alkyl or hydroxyalkyl ester. Compositions including a hydraulic binder such as cement, gypsum, lime and anhydrite and the copolymer are also disclosed. The copolymer can be used as superplasticizer or dispersant for non-hardened (wet) and a hydraulic binder containing compositions.

REFERENCES:
patent: 6777517 (2004-08-01), Albrecht et al.
patent: 195 43 304 (1997-05-01), None
patent: 0 537 870 (1993-04-01), None
patent: 0 736 553 (1996-10-01), None
patent: 1 189 955 (2002-03-01), None

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