Coating composition

• US 5,100,962 A
• Filed: 12/03/1990
• Issued: 03/31/1992
• Est. Priority Date: 07/09/1986
• Status: Expired due to Fees

• Current Assignee: Nippon Paint Company Limited (Rainbow Light Limited)
• Original Assignee: Nippon Paint Company Limited (Rainbow Light Limited)
• Inventors: Sawada, Haruhiko, Uenaka, Akimitsu
• Primary Examiner(s): Bleutge, John C.
• Assistant Examiner(s): BUTTNER, DAVID J
• Application Number:
  US07/622,153
• Time in Patent Office: 484 Days
• Field of Search: 525/124, 525/125, 525/155, 525/160, 525/199, 525/209, 525/931, 525/69, 525/101
• US Class Current: 525/125
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 33/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: C08L 61/20 Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen with aminophenols C08L61/04
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C09D 127/18 Homopolymers or copolymers of tetrafluoroethene
• CPC Class Codes: C09D 133/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: Y10S 525/931 Blend of stated incompatibility
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

A coating composition contains:

(i) a mixture of copolymers comprising (a) 20% to 80% by weight, in terms of the resin solid content, of at least one copolymer selected from the group consisting of silicon-containing copolymers and fluorine-containing copolymers comprising 40 to 60 mol % of fluoroolefin, 45 to 5 mol % of cyclohexylvinyl ether, 15 to 5 mol % of alkylvinyl ether, and 0 to 30 mol % of other comonomers, having an active hydrogen group and (b) 80% to 20% by weight, in terms of the resin solid content, of an acrylic copolymer resin having a solubility parameter greater by 0.5 to 1.5 than that of the copolymer (a) and having an active hydrogen group, and

(ii) a curing agent having a solubility parameter greater by 0.5 to 1.5 than that of the copolymer (a).

Claims

1. A coating composition comprising:

(i) a mixture of copolymers comprising (a) 20% to 80% by weight, in terms of the resin solid content, of at least one copolymer selected from the group consisting of silicon-containing copolymers and fluorine-containing copolymer comprising 40 to 60 mol % of fluoroolefin, 45 to 5 mol % of cyclohexylvinyl ether, 15 to 5 mol % of alkylvinyl ether, and 0 to 30 mol % of other comonomers, and having an active hydrogen group and (b) 80% to 20% by weight, in terms of the resin solid content, of an acrylic copolymer resin having a solubility parameter greater by 0.7 to 1.5 than that of said copolymer (a) and having an active hydrogen group, and

(ii) at least one alkyl etherated amino resin having a solubility parameter greater by 0.5 to 1.5 than that of said copolymer (a).

2. A composition as claimed in claim 1, wherein a weight mix ratio of said mixture of copolymers to the alkyl etherated amino resin is 55/45 to 95/5 in terms of a ratio of the solid content.

3. A coating composition comprising:

(i) a mixture of copolymers comprising (a) 20% to 80% by weight, in terms of the resin solid content, of at least one copolymer selected from the group consisting of silicon-containing copolymers and fluorine-containing copolymer comprising 40 to 60 mol % of fluoroolefin, 45 to 5 mol % of cyclohexylvinyl ether, 15 to 5 mol % of alkylvinyl ether, and 0 to 30 mol % of other comonomers, and having hydroxyl groups and (b) 80% to 20% by weight, in terms of the resin solid content, of an acrylic copolymer resin having a solubility parameter greater by 0.7 to 1.5 than that of said copolymer (a) and having hydroxyl groups, and

(ii) at least one isocyanate compound having a solubility parameter greater by 1.2 to 1.5 than that of said copolymer (a), wherein the weight mix ratio of the mixture of copolymers (i) to the isocyanate compound is 0.3 to 1.5, in terms of a molar ratio of isocyanate groups/hydroxyl groups.

4. A coating composition as claimed in claim 3, wherein said mixture of copolymers (i) further contains dispersed pigment.