Acrylic functional silicone copolymers
US4503208A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1984 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Jan 30, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel copolymeric silicones including repeat units of the formula EQU R.sub.a.sup.1 R.sub.b.sup.2 SiO.sub.(4-a-b)/2 (I) and repeat units of the formula EQU R.sub.a.sup.3 R.sub.b.sup.4 SiO.sub.(4-a-b)/2 (II) where R.sup.1, R.sup.2 and R.sup.3 are the same or different alkyl, haloalkyl, aryl, substituted aryl, alkoxy or aryloxy groups; R.sup.4 is ##STR1## where R.sup.5 is H or alkyl and R.sup.6 is an unsaturated divalent hydrocarbon group; a is an integer from 0-2, b is an integer from 1-3 and a+b=1, 2 or 3; and the repeat units of formula II represent no more than about 30% of the total copolymer repeat units. The copolymers may be rapidly cured by UV light to give useful elastomers or coating films. They may also be cured with traditional peroxide methods including heat and anaerobic activated methods. They are readily prepared by hydrosilation of acrylate or 2-alkylacrylate esters of acetylenic alcohols with SiH functional silicones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.