C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 317/36 (2006.01) C09D 4/00 (2006.01) C09D 5/32 (2006.01) C09D 131/00 (2006.01)
Patent
CA 2083848
2083848 9204383 PCTABS00011 This invention relates to a coating composition which can be cured by exposure to radiation energy in the presence of a cationic photoinitiator. The composition comprises a mixture of between about 1 and about 75 wt. % of a reactive vinyl or alk-1-enyl ether cyclocarbonate having formula (I) wherein R is hydrogen or lower alkyl; R' is C2 to C4 alkylene; n has a value of from 0 to 4 and n' has a value of from 1 to 4 and between about 99 and about 25 wt. % of a polymerizable compound containing an onium salt initiator which is normally insoluble in said polymerizable compound or a mixture thereof. The invention also relates to the use of the composition as a protective coating on a substrate. Preferably, the cyclocarbonate is prepared by a two-stage liquid phase process wherein an alk-2-enyl glycidyl ether having formula (II) wherein R is hydrogen or lower alkyl; R' is C2 to C4 alkylene, n has a value of from 1 to 4 and n' has a value of from 0 to 4, is catalytically isomerized to the corresponding alk-1-enyl glycidyl ether in the first-stage of the reaction and the reaction mixture of the first-stage, containing the isomerization catalyst is then contacted with carbon dioxide in the presence of a phase transfer catalyst under a pressure ranging from atmospheric to about 400 psig in the second stage of the reaction.
Dougherty James A.
Miller Mark M.
Narayanan Kolazi S.
Plotkin Jeffrey S.
Taylor Paul D.
Isp Investments Inc.
Smart & Biggar
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