US 4725650
HEAT STABLE PHENOLIC COMPOSITION CONTAINING ARAMIO FIBERS
Assignee
ROGERS CORPORATION
Filed
Feb 27, 1986
Granted
Feb 16, 1988
Location
DANIELSON CT US
Abstract
A phenolic compound having improved retention of useful properties over long periods of time at elevated temperatures is presented. The novel phenolic compound, preferably a glass reinforced phenol-formaldehyde with mineral fillers has incorporated therein elastomers which primarily undergo crosslinking on oxidative aging, such as butadiene based rubbers, and/or molecular sulfur or sulfur donor components. These additives unexpectedly retard thermal degradation with time of aging and provide exceptionally good retention of weight, molded dimensions and mechanical properties.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 21, 1986
Rescinded
Nov 7, 1986
Duration
2 months
Inventor
- 1VINCENT R. LANDI
Record Details
- Patent number
- US 4725650
- Application
- 06834197
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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ROGERS CORPORATIONBack to patent indexSource: USPTO 35 USC §181 secrecy order records