Process of bonding polysulfide sealant and caulk compositions

Details Process of bonding polysulfide sealant and caulk compositions Process of bonding polysulfide sealant and caulk compositions

1975-03-27

1976-12-28

Husack, Ralph

Stock material or miscellaneous articles

Composite

Of polythioether

156329, 2604482N, 2604488R, 427407R, 427407A, 427409, 428429, 428447, 428450, C07C14900, C03C 1730

Patent

active

040003477

ABSTRACT:
This invention relates to enhancing the bonding of polysulfide sealants to a variety of inorganic substrates, most particularly, to metal, ceramic, concrete, and glass substrates. The enhanced bonding of the polysulfide sealant is achieved by the use of a silane adhesion promoter which is characterized by the following formula: (S.sub.n).sub.a [R -- SiX.sub.3 ].sub.b wherein n is a number ranging from about 2 to about 6, a is a number equal to one-half the free valence of R, b is a number equal to at least 2, R is a divalent organic radical joined at one end to sulphur and at the other end to silicon, and X is a hydrolyzable group.

REFERENCES:
patent: 3123495 (1964-03-01), Carpenter et al.
patent: 3297473 (1967-01-01), Bulbenko
patent: 3468751 (1969-09-01), Tesoro
patent: 3476826 (1969-11-01), Millen

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