Cobaltic promoters in unsaturated polyester resin sheet molding and bulk molding compound
US3988290A · kind A · utility
4Cited by
4References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1975 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | Apr 30, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to an improvement in a process for preparing unsaturated polyester resins which are chemically thickened with a Group II metal oxide or hydroxide and the resulting product. The improvement for extending the shelf life of said molding compound while providing for enhanced curing rates at the molding temperature comprises: Incorporating at least an effective proportion of a cobaltic promotor in said molding compound for selectively extending the shelf life of said molding compound and for providing enhanced cure rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.