Water-dispersible varnish
AssigneesMitsubishi Electric Corporation, Ryoden Kasei Co., Ltd.
InventorsShigeyuki Yamamoto, Yoshinori Shirafuji, Toshifumi Kanri, Satoru Toyama, Nobuyuki Kamegawa, Yukio Hidaka
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Abstract
To obtain water-dispersible varnish used in an alternative refrigerant/refrigerating machine oil refrigerant system or a natural refrigerant/refrigerating machine oil refrigerant system, the water-dispersible varnish being capable of solving two problems, namely, reducing the volatile components and the like during thermal curing and resistance of the cured varnish to the refrigerant system, wherein the water-dispersible varnish has a specific thermosetting resin as base polymer, a specific vinyl monomer as reactive diluent, organic peroxide as reaction initiator, and water mixed therein.
Claims18
A water-dispersible varnish, comprising:
- an epoxy acryl ate resin, as a thermosetting resin, comprising two or more (meth) acryloyl groups in one molecule;
- at least one reactive diluent selected from the group consisting of a vinyl monomer comprising an ether bond, a vinyl monomer comprising an ester bond, a 1-alkylvinyl monomer comprising an ether bond, and a 1-alkylvinyl monomer comprising an ester bond;
- an organic peroxide as a reaction initiator;
- water, and
- a water-soluble surfactant,
- wherein the epoxy acrylate resin is of any of Formulas (I) to (III):
- wherein R1, R2, R3, R6, R7, R8, R10, R11, and R12 are each independently H or CH3;
- R4 is a group of formula:
- n is an integer from 1 to 6;
- R9 is a group of formula:
- m is an integer from 1 to 6;
- R13, R14, and R15 are each independently a group of formula:
- each R5 is independently H or CH3;
- and
- p is an integer from 1 to 6, and
- an amount of the water-soluble surfactant is from 0.5 to 20 parts by weight, relative to 100 parts by weight of the base polymer.
Dependencies are inferred from the claim text.