Loading patent…
AssigneesToyo Boseki Kabushiki Kaisha, Sony Corporation
InventorsNobukazu Kotera, Yasuo Yoshinaka, Shinpei Yamamoto, Hideyuki Ohashi, Yoshinobu Ninomiya, Kiyokazu Oiyama
Estimating the term…
A radiation curable resin which is a polyurethane acrylate having (meth)acryloyloxy groups at the terminal end of the molecule and in the molecular chain thereof, and containing metal sulfonate groups in the molecule in a ratio of 3.0 to 1,500 equivalent/10.sup.6 g of the resin, said polyurethane acrylate being obtained by reaction of (1) a copolyester having hydroxyl groups at both terminal ends of the molecule and containing metal sulfonate groups therein, (2) a diisocyanate, (3) a compound (A) having at least one (meth)acryloyloxy group and two hydroxyl groups, (4) a compound (B) having at least one (meth)acryloyloxy group and one hydroxyl group, and optionally (5) a polyol other than the above (1) or (3). the radiation curable resin containing a compound (C) having at least one carboxylic acid group and two hydroxyl groups in addition to the above components (1) to (5) is also disclosed.
A radiation curable resin which is a polyurethane acrylate having (meth)acryloyloxy groups at the terminal end of the molecule and in the molecular chain thereof, and containing metal sulfonate groups in the molecule in a ratio of 3.0 to 1,500 equivalent/10.sup.6 g of the resin, said polyurethane acrylate being obtained by reaction of
A radiation curable resin which is a polyurethane acrylate having (meth)acryloyloxy groups at the terminal end of the molecule and in the molecular chain thereof, containing metal sulfonate groups in the molecule in a ratio of 3.0 to 1,500 equivalent/10.sup.6 g of the resin, and further containing carboxyl groups in the molecule in a ratio of 5.0 to 2,000 equivalent/10.sup.6 g of the resin, said polyurethane acrylate being obtained by reaction of
Dependencies are inferred from the claim text.