C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
154/121, 402/134
C08G 18/40 (2006.01) C08C 19/38 (2006.01) C08F 279/02 (2006.01) C08G 18/62 (2006.01) C08G 18/67 (2006.01) C08L 47/00 (2006.01) C09D 4/06 (2006.01)
Patent
CA 2024730
ABSTRACT OF THE DISCLOSURE A polymerizable ethylenically unsaturated oligomer and liquid coating compositions containing the same are disclosed. These unsaturated oligomers are the oligomeric reaction product of components comprising: (1) a polybutadiene oligomer carrying two reactive groups and lacking significant unsaturation, the oligomer containing at least about 60% by weight of butadiene polymerized in the 1,2 position with the balance of the butadiene polymerized in the 1,4 position and the oligomer being hydrogenated to remove much of the residual unsaturation therefrom, said difunctional oligomer having a number average molecular weight of from about 500 to about 5,000 daltons; and (2) a monofunctional ethylenically unsaturated compound, the unsaturated oligomer having a number average molecular weight of from about 1,000 to about 10,000 and containing at least about 40% by weight of the polybutadiene oligomer. In preferred practice the polybutadiene oligomer is a diol and it is reacted with a molar excess of an organic compound having a plurality of groups reactive with the hydroxy groups of the oligomer diol to provide reactive terminal groups which are preferably reacted with a monohydric (meth)acrylate. These unsaturated oligomers are combined with an ethylenically unsaturated liquid comprising alkyl (meth)acrylate in which the alkyl group contains at least 6 carbon atoms to form compositions which cure to form coatings having superior resistance to water.
Krajewski John J.
Murray Kevin P.
Vandeberg John T.
Zimmerman John M.
Dsm N.v.
Goudreau Gage Dubuc
Krajewski John J.
Murray Kevin P.
Vandeberg John T.
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