Dicarboxy functionalized silicone
US6743884B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2003 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | May 2, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Dicarboxy functionalized polyorganosiloxanes having the formulaX(R4R5SiO)p(R6ASiO)qY  (I)whereinthe X end group represents a triorganosiloxyl end group of formula R1R2R3SiO, or a Z end group, wherein Z represents —OHthe Y end group represents a triorganosilyl end group of formula SiR3R2R1, or a W end group, wherein W represents —HR1 to R6 represent a C1-C8 alkyl or phenyl radical, preferably methylA represents the dicarboxy radical of formula (I′) or salts thereof—(CH2)3—CH(COOH)—CH2COOH  (I′)p is an average value ranging from 0 to 1000q is an average value ranging from 1 to 100the ratio of the number of Z and W end groups to the total number of X and Y end groups being from 0/100 to 75/100. They can be used for the water repellent treatment of surfaces, particularly inorganic surfaces or surfaces containing alkaline or earth-alkaline metal, and as anti-corrosion additives for the treatment of metal surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.