Terpolymers of unsaturated sulfonates, N-vinylamides and ethylen

Details Terpolymers of unsaturated sulfonates, N-vinylamides and ethylen Terpolymers of unsaturated sulfonates, N-vinylamides and ethylen

1996-08-07

2000-07-18

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526287, 5263071, C08F22802, C08F22052

Patent

active

060908998

ABSTRACT:
A high-flow concrete additive comprises a polymer of 10-100 wt % of an N-vinylacetamide, 0-50 wt % of a compound CH.sub.2 .dbd.CR.sup.3 X.sup.1 R.sup.4 SO.sub.3 X.sup.2 wherein R.sup.3 is hydrogen or methyl, R.sup.4 is alkylene of 1 to 4 carbon atoms, X.sup.1 is CONH or COO, and X.sup.2 is hydrogen, an alkali metal, ammonium salt or organic ammonium salt, and 0-40 wt % of a compound CH.sub.2 .dbd.CR.sup.5 X.sup.3 wherein R.sup.5 is hydrogen or methyl and X.sup.3 is CN, COOR.sup.6, CONH.sub.2, CONHR.sup.7, CONR.sup.8 R.sup.9, COR.sup.10, OCOR.sup.11 or OR.sup.12, in which R.sup.6 is hydrogen, an alkali metal, ammonium salt, organic ammonium salt or alkyl group of 1 to 4 carbon atoms, R.sup.7, R.sup.8 and R.sup.9 are alkyl groups of 1 to 4 carbon atoms, and R.sup.10, R.sup.11 and R.sup.12 are alkyl groups of 1 to 4 carbon atoms.

REFERENCES:
patent: 4309523 (1982-01-01), Engelhardt
patent: 4587283 (1986-05-01), Hille
patent: 5116421 (1992-05-01), Ganguli

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