Photocationically curable compositions and process for producing

Details Photocationically curable compositions and process for producing Photocationically curable compositions and process for producing

1999-01-07

2000-09-19

Moore, Margaret G.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522168, 549215, 528 27, 528 40, C08J 328, C08J 7714

Patent

active

06121342&

ABSTRACT:
A photocationically curable composition and a process for producing the same are provided. The composition comprises, as the essential component, a condensation product having an oxetanyl group, which is a condensation product of a hydrolyzate of an organic silane compound having an oxetanyl group and being represented by the formula below, or of a mixture of said organic silane compound and a reactive silicone having a siloxane linkage-forming group: ##STR1## wherein R.sup.0 means an organic functional group having an oxetanyl group, and X means a hydrolyzable group. The composition forms cured coating films of high surface hardness, and is useful as hard coating agents.

REFERENCES:
patent: 3240754 (1966-03-01), Plueddemann
patent: 3338867 (1967-08-01), Plueddemann
patent: 4367303 (1983-01-01), Eimers et al.
patent: 4966981 (1990-10-01), Takai et al.
patent: 5463084 (1995-10-01), Crivello et al.
Lecamp et al., "Cationic Photocrosslinkable Polydimethylsiloxane III. Synthesis and Photocrosslinking of Polydimethylsiloxane Bearing Oxetane Groups". J.M.S. Pure Appl. Chem., A34(11), pp. 2335-2353, 1997.
"Cationic Photocrosslinkable Polydimethylsiloxane III. Syntheses and Photocrosslinking of Polydimethylsiloxane Bearing Oxetane Groups", Lecamp et al., J.M.S.--Pure Appl. Chem., A349(11), pp. 2335-2353 (1997).
"Synthesis and Photoinitiated Cationic Polymerization of Monomers with the Silsesquioxane Core", Crivello et al., Journal of Polymer Science: Part A: Polymer Chemistry, vol. 35, pp 407-425 (1997).

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