Nippon Oil Fats Co., Ltd.

Shigeki Banno

Yoshihiro Tomura

Masaharu Nakayama

Takeshi Komai

Yoshihiro Oshibe

Masaru Matsushima

Nobuo Kanazawa

Yoshimasa Nakagawa

A photocurable compound prepared as a starting material by incorporation therein of a composition comprising a fluorescein compound photoreducing dye, tribenzylamine, and at least one specific peroxide permits production of a shaped article which, on exposure to visible light, exhibits high curability and acquires hardness virtually indiscriminately on the obverse and reverse sides of the article. A mixture comprising both or either of an unsaturated polyester resin and an epoxy acrylate resin which are photocurable compounds, glass fibers, and a specific peroxide, is convenient for the production of specific cured shaped articles particularly by the filament winding technique or the drawing technique.

Curability-imparting composition, method for curing with said

A visible light-curing polyester resin composition comprises an unsaturated polyester resin and a photocuring agent composed of an .alpha.-diketone, a benzyidimethyl ketal, and at least one member selected from the group consisting of (1) 2-(dimethylamino)-ethyl benzoate, (2) 2-(dimethylamino)-ethyl benzoate plus a peroxy ketal, and (3) a peroxy ketal plus a tertiaryamine.

Visible light-curing polyester resin composition

A cured unsaturated polyester resin or vinyl ester resin having excellent water resistance, weather resistance, stain resistance and anti-block property can be obtained by curing an unsaturated polyester resin or vinyl ester resin together with a fluorine-containing block copolymer consisting of a polymer portion having fluorine-containing groups and a polymer portion compatible with the unsaturated polyester resin or vinyl ester resin.

Cured unsaturated polyester resin or vinyl ester resin containing

In curing an unsaturated polyester resin in the presence of an organic peroxide added thereto, 4-methyl-2,4-diphenyl-pentene-1 is added to the mixture of the unsaturated polyester resin with the organic peroxide to enhance the curing properties.

Curing method for unsaturated polyester resin

A composition of matter which is prepared by blended with an unsaturated resin with a block copolymer which is obtained by employing a polymeric peroxide has dispersion stability during long storage found in no conventional one. A hardened moulding product obtained from the aforementioned composition matters is small in its volume shrinkage and exhibit smoothness and gloss to the surface thereof even it is employed after long period storage.

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Aichi, Japan

Shigeki Banno