Phenolic novolak resins, cured substances therefrom and...

Details Phenolic novolak resins, cured substances therefrom and... Phenolic novolak resins, cured substances therefrom and...

C - Chemistry, Metallurgy

08

G

402/43, 402/51,

C08G 8/10 (2006.01) C08G 8/08 (2006.01) C08G 59/08 (2006.01) C08G 59/20 (2006.01) C08G 59/62 (2006.01) C08L 61/06 (2006.01) C08L 63/00 (2006.01) C08L 63/04 (2006.01)

Patent

CA 2033978

ABSTRACT A phenolic novolak resin comprising a compound represented by the general formula [I]: Image [I] wherein X is H or Image , R is an alkyl group having 1 to 4 carbon atoms, and n is 1 to 10, particularly a phenolic novolak epoxy resin, and material, and a cured substance therefrom, and a process for producing the resin are disclosed. This resin is excellent in heat resistance and in reluctance to absorb water as compared with conventional phenolic resins, and useful in sealing electronic parts, molding, and laminating.

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