Curable silicone release composition and sheet having a releasability using the same
US7528209B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 2005 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Jul 28, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A curable silicone composition which comprises (A) a diorganopolysiloxane which has a viscosity of about 50 to 500 mPa·s at 25° C. and has silicon-bonded alkenyl groups only at the molecular chain ends, (B) a diorganopolysiloxane which has a viscosity of about 50,000 to 500,000 mPa·s at 25° C. and has silicon-bonded alkenyl groups only at the molecular chain ends, (C) an organohydrogenpolysiloxane which has at least eight silicon-bonded hydrogen atoms per molecule and has a viscosity of about 3 to 15 mPa·s at 25° C., and (D) a catalytic amount of a platinum-group metal catalyst as essential components, wherein said composition has a viscosity of about 100 to 1,000 mPa·s at 25° C.; and a sheet having a releasability comprising a cured coating film of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.