Efflorescence control in cementitious compositions and masonry units
US6231665A · kind A · utility
10Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Sep 22, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cementitious composition is disclosed whereby visible efflorescence is prevented when formed into a cement masonry concrete unit. Efflorescence is controlled by incorporation of a polymer comprising a polyacrylic acid or salt or derivative thereof having an average molecular weight in the range of 5004-9,000, and more preferably in the average molecular weight range of 1,000 to 10,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.