Cement dispersant and concrete composition containing the dispersant
US6680348B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 20, 2001 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/408
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cement dispersant (especially a dispersant for concretes with ultrahigh performance) comprising as a main component a water-soluble amphoteric copolymer obtained by copolymerizing (A) a polyamide-polyamine of an alkylene oxide adduct thereof with (B) (meth)acrylic acid or an alkali metal, ammonium, or alkanolamine salt thereof and (C) a polyalkylene glycol ester of (meth)acrylic acid in an A/B/C ratio of (10-40)/(10-40)/(50-80) (wt. %); and a concrete composition (especially an ultral high-performance concrete) containing the dispersant. The dispersant satisfies all of a water-reducing effect, slump flow retention, strength development, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.