Photocurable silicone composition, and method of making the same
US5179134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1990 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Nov 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/0625
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An acryloxy-functional capped silicone formed as a reaction product of: PA0 (i) a silyl diacrylate compound of the formula: ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, and R.sub.10 are independently selected from hydrogen, halo, and organo radicals; and PA1 n is an integer having a value of from 1 to 4; and PA0 (ii) a silicone having at least one functionality which is reactive with an acryloxy functionality of the silyl diacrylate compound to yield the acryloxy-functional capped silicone. The capped silicone may suitably be formulated with an effective amount of a photoinitiator for curing of the acryloxy-functional capped silicone under photoinitiating curing conditions. The silicone functionality which is reactive with the acryloxy functionality of the silyl diacrylate compound may be --OH, or other labile hydrogen-containing substituent. Preferably, the silicone is a hydroxy-terminated linear polydiorganosiloxane. The compositions of the invention are usefully employed as sealants, conformal coatings, potting materials, and the like, and are readily curable with UV radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.