Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1984-03-09
1985-09-24
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526194, 526271, 526273, 526279, C08F 2612, C08F12608, C08F22608
Patent
active
045434034
ABSTRACT:
A moisture curable composition comprising an acrylate or methacrylate polymer having a silicon functional group capable of causing crosslinking or chain extension by moisture, at least in molecular ends, and being useful particularly as a sealing material and a pressure sensitive adhesive, said polymer being prepared by polymerizing (a) an alkyl acrylate or methacrylate or a monomer mixture of at least 50% by weight of the alkyl acrylate or methacrylate and other unsaturated compounds copolymerizable therewith and (b) 0 to 20 parts of .alpha.,.beta.-ethylenically unsaturated organic silicon compound in the presence of (c) 0.01 to 20 parts of a radical polymerization initiator having a group of the general formula: ##STR1## wherein R.sup.3 is a monovalent hydrocarbon group having 1 to 6 carbon atoms, X is a hydrolyzable group and "a" is 0, 1 or 2, and (d) 0 to 20 parts of a chain transfer agent selected from the group consisting of a compound of the general formula: ##STR2## and a compound of the general formula: ##STR3## wherein R.sup.3, X and "a" are as defined above, and R.sup.4 is a bivalent organic group, said parts of (b), (c) and (d) being parts by weight per 100 parts by weight of (a).
REFERENCES:
patent: 3324074 (1967-06-01), McManimie
patent: 3453230 (1969-07-01), Plueddemann
patent: 3775386 (1973-11-01), Citron
Hirose Toshifumi
Isayama Katsuhiko
Kawakubo Fumio
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
Reddick J. M.
Schofer Joseph L.
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