Molding process using curable silicone release compositions
US4244912A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1979 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Mar 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/70
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved molding process is provided which comprises treating a mold surface with certain curable silicone compositions to improve the release of a molded article from the mold. The curable silicone release composition is obtained by mixing a vinyl-endblocked polydiorganosiloxane, a xylene-soluble vinyl-containing resinous polysiloxane, a methylhydrogenpolysiloxane crosslinking agent and a hydrosilylation catalyst. The curable silicone release composition is easily applied to and rapidly cured onto the mold surface and, when cured, provides many easy releases of molded articles such as high resiliency polyurethane foam cushions, polyurethane elastomeric shoe soles and polyester boat hulls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.