C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/343, 204/91.
C08F 22/10 (2006.01) C08F 20/40 (2006.01) C08K 5/37 (2006.01) C09D 4/00 (2006.01)
Patent
CA 1190699
- 1 - ABSTRACT OF THE DISCLOSURE Polymerisable compositions comprise a) a compound containing both i) at least one acryloyloxy or methacryloyloxy group, ii) at least one allyl, methallyl, or 1-propenyl group attached directly to a carbon atom which forms part of an aromatic nucleus or to an oxygen atom or an oxycarbonyl group which are in turn directly attached to such a carbon atom, the total of the said groups i) and ii) being at least three, and b) a compound containing at least two mercaptan groups directly attached to aliphatic carbon atoms, in a proportion as to supply at least 0.8 such mercaptan group per allyl, methallyl or 1-propenyl group in a) but less than 1.0 such mercaptan group in a) per acryloyl, methacryloyl, allyl, methallyl, or 1-propenyl group Examples of a) are 2,2-bis(3-allyl-4-(methacryloyloxy)phenyl)- - 2 - propane, bis(3-methallyl-4-(methacryloyloxy)phenyl)methane, 2,2-bis(3-allyl-4-(3-(methacryloyloxy)-2 hydroxypropoxy)phenyl)propane, 2,6-dimethallylphenyl acrylate, 1-(allyloxycarbonyl)-2,4- and 2,5-bis(3-(methacryloyloxy)-2-hydroxypropoxycarbonyl)benzene, and benzophenone-3,4,3',4'-tetracarboxylic acid X,X'-diallyl esters Y,Y'-bis(3-(methacryloyloxy)-2-hydroxypropyl)esters. Examples of b) are pentaerythritol tetrathioglycollate, trimethylolpropane trithioglycollate, and 3,6-dioxa-1,8-dimercapto-octane. The compositions may be polymerised by means of actinic irradiation in the presence of an added or "built-in" photo- sensitiser or by the action of a free-radical catalyst. Compositions containing both a photosensitising agent and a heat-activated free- radical catalyst may be subjected to a two-stage process, comprising brief exposure to actinic radiation followed by, when desired, heating. They are useful in the production of surface coatings, adhesive bonds, and of reinforced composites.
367167
Green George E.
Irving Edward
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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