CURABLE COMPOSITIONS

• US 20140303283A1
• Filed: 03/15/2013
• Published: 10/09/2014
• Est. Priority Date: 03/15/2013
• Status: Abandoned Application

• Current Assignee: Sherwin-Williams Company
• Original Assignee: Sherwin-Williams Company
• Inventors: Ding, Hong, Yang, Zhiqi
• Application Number:
  US13/832,562
• Publication Number:
  US 20140303283A1
• Time in Patent Office: Days
• US Class Current: 523/429
• CPC Class Codes: C08G 59/14 Polycondensates modified by chemical after-treatment
• CPC Class Codes: C08G 59/40 characterised by the curing agents used
• CPC Class Codes: C08G 63/912 derived from hydroxycarboxylic acids
• CPC Class Codes: C08K 9/02 Ingredients treated with inorganic substances
• CPC Class Codes: C08L 63/00 Compositions of epoxy resins; Compositions of derivatives of epoxy resins
• CPC Class Codes: C08L 67/00 Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain of polyester-amides C08L77/12; of polyester-imides C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C09D 133/00 Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
• CPC Class Codes: C09D 163/00 Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
• CPC Class Codes: C09D 167/00 Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain based on polyester-amides C09D177/12; based on polyester-imides C09D179/08; Coating compositions based on derivatives of such polymers
• CPC Class Codes: C09D 167/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds C09D167/06 takes precedence
• CPC Class Codes: C09D 167/04 Polyesters derived from hydroxycarboxylic acids, e.g. lactones C09D167/06 takes precedence

Abstract

A multi-component curable composition which is reactive upon admixing of the components and which is the reaction product of: (i) a polyester epoxy block or graft copolymer having acetoacetoxy functionality; and (ii) a crosslinking component. The crosslinking component may include at least one imine functional compound having an average of at least two imine groups per molecule which are reactive with acetoacetoxy functionality.

Claims

1. A curable composition comprising the reaction product of:

(a) an acetoacetoxy functional polyester epoxy block or graft copolymer; and

(b) a crosslinking component.

2. The curable composition of claim 1, wherein the acetoacetoxy functional polyester epoxy copolymer comprises the reaction product of:

(a) an epoxy functional agent, and

(b) an acid functional polyester polyol.

3. The curable composition of claim 2, wherein the epoxy functional agent is a monoepoxide.

4. The curable composition of claim 2, wherein the epoxy functional agent is a polyepoxide having two or more epoxy functionalities.

5. The curable composition of claim 4, wherein the acetoacetoxy functional polyester epoxy block copolymer is a diblock copolymer.

6. The curable composition of claim 4, wherein the acetoacetoxy functional polyester epoxy block copolymer is a triblock copolymer.

7. The curable composition of claim 4, wherein the acetoacetoxy functional polyester epoxy copolymer is a graft copolymer.

8. The curable composition of claim 1, wherein the crosslinking component is an isocyanate functional crosslinker.

9. The curable composition of claim 1, wherein the crosslinking component comprises at least one imine functional compound having an average of at least two imine groups per molecule which are reactive with acetoacetoxy functionality.

10. The curable composition of claim 8, further comprising at least one other acetoacetoxy functional polymer selected from the group consisting of acetoacetoxy functional acrylics, epoxies, polyesters and alkyds.

11. The curable composition of claim 10, further comprising a metal modified aluminum polyphosphate pigment.