MARK FRANCIS WEAVER
Pilots at Vanderbilt Ln, Redondo Beach, CA
License number
California A4209614
Issued Date
Aug 2014
Expiration Date
Aug 2015
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
2318 Vanderbilt Ln UNIT B, Redondo Beach, CA 90278
Professional information
Modified Polyurethane Flow-Under Thermal Transfer Adhesive
US Patent:
5061776, Oct 29, 1991
Filed:
Nov 19, 1990
Appl. No.:
7/615932
Inventors:
Mark A. Weaver - Redondo Beach CA
Lynn E. Long - Manhattan Beach CA
Steven E. Lau - Los Angeles CA
Lynn E. Long - Manhattan Beach CA
Steven E. Lau - Los Angeles CA
Assignee:
Hughes Aircraft Company - Los Angeles CA
International Classification:
C08G 1810
US Classification:
528 60
Abstract:
A thermal transfer adhesive composition which is applied after electronic components have been installed on a printed wiring board, comprising:
(a) 30 to 70 weight percent of an aliphatic diisocyanate or triisocyanate prepolymer;
(b) 5 to 15 weight percent of a polyether diol or triol;
(c) 20 to 40 weight percent of castor oil;
(d) 5 to 20 weight percent of an epoxy resin containing 2 or more hydroxyl group;
(e) 0. 006 to 0. 008 weight percent of a catalyst for the reaction of isocyanate groups with hydroxyl groups. The cured product is hydrolytically stable at 185. degree. F. and 95 percent relative humidity and has a good storage life when frozen. Alternatively, the composition may also include a pigment.