Cement dispersing agent
US4888059A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1987 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cement dispersing agent comprising as an essential component a copolymer obtained by copolymerizing (a) 40 to 90% by weight, calculated as an alpha,beta-ethylenically unsaturated carboxylic acid, of the alpha,beta-ethylenically unsaturated carboxylic acid and/or its salt and (b) 60 to 10% by weight of an acrylic ester and/or a methacrylic ester of an alkyl alcohol having 1 to 4 carbon atoms, or a copolymer obtained by copolymerizing (a) 40 to 89% by weight, calculated as an alpha,beta-ethylenically unsaturated carboxylic acid, of the alpha,beta-ethylenically unsaturated carboxylic acid and/or its salt, (b) 51 to 10% by weight of an acrylic ester and/or a methacrylic ester of an alkyl alcohol having 1 to 4 carbon atoms and (c) 1 to 9% by weight of the other copolymerizable unsaturated monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.