Air-drying resin composition
AssigneeNippon Gohsei Kagaku Kogyo Kabushiki Kaisha
InventorsSadao Shigematsu, Mamoru Akiyama
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Abstract
An drying resin composition comprises (A) at least one radical curable resin selected from the group consisting of an unsaturated polyester resin, an urethane-acrylic resin, a polyester-acrylic resin and an epoxy-acrylic resin, (B) an urethane-acrylic oligomer having 1.0 to 10.0 mmole/g of allyl ether groups and 0.2 to 5 mmole/g of (meth)acryloyl groups, (C) and ethylenically unsaturated monomer and (D) an initiator. The composition has an improved drying property and provides a coating film having improved flexibility, weatherability and water resistance.
Claims6
An air-drying resin composition comprising
- (A) at least one radical curable resin selected from the group consisting of an unsaturated polyester resin, an urethane-acrylic resin, a polyester-acrylic resin other than said unsaturated polyester resin and an epoxy-acrylic resin other than said urethane-acrylic resin;
- the unsaturated polyester resin being obtained by condensing a polybasic acid and a polyhydric alcohol, the urethane-acrylic acid resin being produced by reacting (a) a diisocyanate compound, (b) an unsaturated polyester polyol or a polyhydric alcohol and (c) a (meth)acrylic monomer, the polyester-acrylic resin being produced by introducing an acrylic monomer into the end of an unsaturated polyester resin and the epoxy-acrylic resin being produced by reacting an acrylic monomer with an epoxy group of a bifunctional bisphenol A epoxy resin,
- (B) an urethane-acrylic oligomer other than said urethaneacrylic resin, said oligomer having 1.0 to 10.0 mmole/g of allyl ether groups and 0.2 to 5 mmole/g of acryloyl groups or methacryloyl groups which is produced by reacting (a) a diisocyanate compound, (b) an ethylene glycol-phthalic anhydride condensation product or a polyhydric alcohol, (c) an allyl ether of said polyhydric alcohol and (d) a (meth)acrylic monomer,
- (C) an ethylenically unsaturated monomer and
- (D) an initiator.
Dependencies are inferred from the claim text.