Slump retaining polycarboxylic acid superplasticizer
US9365669B2 · kind B2 · utility
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Key dates
| Filing date | Dec 5, 2012 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Dec 5, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/308
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A slump retaining polycarboxylic acid superplasticizer. A weight average molecular weight of the superplasticizer is 20,000-80,000. The slump retaining polycarboxylic acid superplasticizer is prepared by performing polymerization reaction on a monomer A, a monomer B, a monomer C and a monomer D in an aqueous solution in the presence of a redox initiator, wherein a molar ratio of (the monomer A+the monomer B):the monomer C:the monomer D is 1:(3-8):(4-12), and a molar ratio of the monomer A to the monomer B is 1:(1-4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.