Self-locking agent

Details Self-locking agent Self-locking agent

1993-06-04

1994-10-04

Davis, Jenna L.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 71, 156 92, 156330, 428355, 4284022, B32B 708, C08K 910

Patent

active

053523083

ABSTRACT:
A self-locking agent for a fastening device comprises a microencapsulated adhesive composition comprising the following constituents (a) to (c):
(a) an epoxy compound having at least two epoxy groups,
(b) an aromatic diamine represented by the following formula (a) or (b): ##STR1## wherein R.sub.1 to R.sub.4 each represent CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, CH(CH.sub.3).sub.2, C.sub.4 H.sub.9 or a halogen, or ##STR2## wherein R.sub.5 to R.sub.7 each represent CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7 or a halogen, and
(c) at least one compound selected from the group consisting of thiosalicylic acid, salicylic acid, benzoic anhydride, boron trifluoride and boron trifluoride complexes, wherein at least one of the epoxy compound (a) and aromatic diamine (b) is microencapsulated to keep them apart from each other, said self-locking agent has excellent thermal resistance and storage stability.

REFERENCES:
patent: 3928230 (1975-12-01), Unsworth
patent: 4164971 (1979-08-01), Strand
patent: 4447586 (1984-05-01), Shimp
patent: 4536524 (1985-08-01), Hart
patent: 4775736 (1988-10-01), Wiggins
patent: 4808639 (1989-02-01), Chernack
patent: 4940852 (1990-07-01), Chernack
patent: 5000636 (1991-03-01), Wallace
patent: 5041668 (1991-08-01), Nalepa

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