Composite tooling
US4859528A · kind A · utility
7Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Dec 3, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2992
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composite tooling part having excellent dimensional stability, which may be prepared at low cost employs a one-component epoxy resin system having a catalyst which is the reaction product of an aromatic dicyanate and an imidazole. Reinforcing materials are incorporated in the matrix, and the resulting prepreg is allowed to cure at low temperature, down to about room temperature, until the free standing state is obtained. Thereafter, if elevated temperature performance is necessary, the product can be post-cured at elevated temperatures, without the need for a high temperature master.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.