Method for making paintable silicone surfaces and elastomer
US3957714A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1975 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | May 19, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K7/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Mixing under substantially anhydrous conditions, below 60.degree.C. and under shear conditions which do not substantially alter filler structure, 100 parts by weight of a hydroxyl endblocked polydimethylsiloxane, 70 to 150 parts by weight of a finely divided agglomerated precipitated acicular calcium carbonate, 35 to 200 parts by weight of organic solvent, from 12 to 20 parts by weight of monoalkyltriacetoxysilane and a catalytic amount of an organotin carboxylate, a curable mixture which is storable under anhydrous conditions is obtained. Exposing this curable mixture to atmospheric moisture and allowing the organic solvent to evaporate provides a cured coherent solid elastomeric material which is paintable with at least one type of decorative organic base paint which forms a continuous coating over the surface and adheres thereto. Silicone rubber compositions are also described which cured to elastomers having paintable surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.