Hydroxyl-containing compositions and their polymerisation

Details Hydroxyl-containing compositions and their polymerisation Hydroxyl-containing compositions and their polymerisation

C - Chemistry, Metallurgy

08

G

402/166, 402/262

C08G 83/00 (2006.01) G03F 7/027 (2006.01)

Patent

CA 1136340

Abstract of the Disclosure Polymerisable compositions comprise a) a compound containing in the same molecule both at least one phenolic hydroxyl group and at least two groups chosen from allyl, methallyl, and 1-propenyl groups, e.g., 2,2-bis(3-allyl-4-hydroxy- phenyl)propane of bis(3-(1-propenyl)-4-hydroxyphenyl)methane, b) a compound containing at least two mercaptan groups per molecule, e.g., pentaerythritol tetrathioglycollate, and c) a heat-activated crosslinking agent for phenol-aldehyde novolac resins. The compositions are caused to polymerise by the action of irradiation or free-radical catalysts. The polymers so obtained, containing more than one phenolic hydroxyl group, can be subsequently crosslinked in situ by heating. The compositions are useful in various two-stage operations, such as the production of multilayer printed circuits.

319835

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