Addition curable compositions curable to high tensile strength, tack free compositions through appropriate filler selection
US5880195A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to the preparation of an addition curable composition curable to a high tensile strength, tack free composition. The addition curable composition comprises an organic polymer having on average at least 1.4 alkenyl groups per molecule, a crosslinker having on average at least 1.4 hydrosilyl groups per molecule, a platinum group metal-containing catalyst and a specific ratio of a fatty acid treated, precipitated calcium carbonate filler having an average particle size in the range of 0.05 to 1 micron and a ground filler selected from the group consisting of calcium carbonate, kaolin clay and amorphous, non quartz silica each having an average particle size in the range of 0.2 to 40 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.