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US 5,739,179 AGranted
Grafted polymer composition
AssigneeRohm and Haas Company
InventorsShang Jaw Chiou, Miao-Hsun Li Sheng
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Abstract
Aqueous emulsions of grafted polymer compositions are provided. The grafted component of these compositions has two or more polymeric substituents. The aqueous emulsions of grafted polymer compositions are particularly useful as cement modifiers.
Claims6
An emulsion polymer comprising a core and a grafted shell, said grafted shell selected from the group consisting of
- (a) at least one graftable water-soluble polymer and at least one graftable alkali-soluble polymer;
- (b) at least one graft copolymer comprising at least one graftable water-soluble polymer grafted with at least one graftable alkali-soluble polymer;
- and
- (c) a combination of (a) and (b).
1 more element
A cement composition comprising cement and an aqueous emulsion comprising:
- water and an emulsion polymer comprising a core and a grafted shell, said grafted shell selected from the group consisting of
- (a) at least one graftable water-soluble polymer and at least one graftable alkali-soluble polymer;
- (b) at least one graft copolymer comprising at least one graftable water-soluble polymer grafted with at least one graftable alkali-soluble polymer;
- and
- (c) a combination of (a) and (b).
2 more elements
A method for modifying cement compositions comprising adding to a cement composition an effective amount of an aqueous emulsion comprising:
- water and an emulsion polymer comprising a core and a grafted shell, said grafted shell selected from the group consisting of
- (a) at least one graftable water-soluble polymer and at least one graftable alkali-soluble polymer;
- (b) at least one graft copolymer comprising at least one graftable water-soluble polymer grafted with at least one graftable alkali-soluble polymer;
- and
- (c) a combination of (a) and (b).
2 more elements
Dependencies are inferred from the claim text.