Agent increasing the rate of hardening of cements, mortars and concretes while maintaining their workability
US5372643A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Jul 9, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B24/122
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to an agent increasing the rate of hardening of cements, mortars and concretes while maintaining their workability. It also concerns an adjuvant for cements, mortars and concretes, comprising an effective quantity of said agent, and the cements, mortars and concretes comprising an effective quantity of said agent or said adjuvant. This agent corresponds to the formula ##STR1## in which R.sub.1, R.sub.2 and R.sub.3, which may be identical or different, denote the hydrogen atom or an alkyl, substituted alkyl, alkene, aryl or aralkyl group, PA1 B denotes a hydrocarbon chain containing at least one --CH.sub.2 -- unit and in which the number of carbons situated in the chain is smaller than or equal to 10, PA1 A denotes the groups: ##STR2## in which: X denotes an organic or inorganic anion and in particular a halogen PA1 R.sub.5, R.sub.6 and R.sub.7, which may be identical or different, denote alkyl, substituted alkyl, alkene, aryl or aralkyl radicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.