Citation: . EFFECT OF ACIDITY ON ACID-SENSITIVE UV CURING SYSTEM*[J]. Chinese Journal of Polymer Science, ;1999, 17(1): 43-48. shu

EFFECT OF ACIDITY ON ACID-SENSITIVE UV CURING SYSTEM*

Received Date: 20 August 1997

By using diphenyliodonium salts with different counterions as photo acid generators (PAGs), theeffect of acidity on ring-opening polymerization of epoxy monomers and polycondensation of polyol withhexamethoxymethyl melamine (HMMM) was studied. The result shows that the rate of ring-openingpolymerization is evidently dependent on the acidity of the acid and strong photo-generated acid is required.However, there is a leveling effect in the polycondensation system; if the photo-generated acid is stronger than protonated HMMM,the acidity does not obviously affect the polycondendation rate.
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