Acrylic polyol resins compositions

Patent metadata

Field	Value
Publication number	US-9803051-B2
Application number	US-201214352258-A
Country	US
Kind code	B2
Filing date	Oct 16, 2012
Priority date	Oct 19, 2011
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The invention relates to compositions of hydroxyl functional acrylic resins (acrylic polyols) comprising a mixture of α,α-branched alkane carboxylic glycidyl esters derived from butene oligomers characterized in that the sum of the concentration of the blocked and of the highly branched isomers is at least 50%, preferably above 60% and most preferably above 75% on total composition.

First claim

We claim:

1. A hydroxyl functional acrylic resin composition prepared from a mixture of α,α-branched alkane carboxylic glycidyl esters wherein a sum of the concentration of blocked and of highly branched isomers is at least 50 wt % based on the total weight of the mixture and wherein the mixture of α,α-branched alkane carboxylic glycidyl esters is selected from the group consisting of 2,2-dimethyl 3,3-dimethyl pentanoic acid glycidyl ester, 2-methyl 2-isopropyl 3-methyl butanoic acid glycidyl ester, 2-methyl 2-ethyl 3,3-dimethyl butanoic acid glycidyl ester, 2,2-dimethyl 3-methyl 4-methyl pentanoic acid glycidyl ester, 2,2-dimethyl 4,4-dimethyl pentanoic acid glycidyl ester, and combinations of any two or more thereof.

2. The composition of claim 1 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters is based on a neononanoic (C9) acid mixture wherein the sum of the concentration of the blocked and of the highly branched isomers is at least 50 wt % based on the total weight of the mixture.

3. The composition of claim 1 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters comprises 2,2-dimethyl 3,3-dimethyl pentanoic acid glycidyl ester, 2-methyl 2-isopropyl 3-methyl butanoic acid glycidyl ester and 2-methyl 2-ethyl 3,3-dimethyl butanoic acid glycidyl ester in an amount above 10 wt % based on the weight of the mixture.

4. The composition of claim 3 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters comprises 2,2-dimethyl 3,3-dimethyl pentanoic acid glycidyl ester, 2-methyl 2-isopropyl 3-methyl butanoic acid glycidyl ester and 2-methyl 2-ethyl 3,3-dimethyl butanoic acid glycidyl ester in an amount above 15 wt % based on the total weight of the mixture.

5. The composition of claim 3 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters comprises 2,2-dimethyl 3,3-dimethyl pentanoic acid glycidyl ester, 2-methyl 2-isopropyl 3-methyl butanoic acid glycidyl ester and 2-methyl 2-ethyl 3,3-dimethyl butanoic acid glycidyl ester in an amount above 25 wt % based on the total weight of the mixture.

6. The composition of claim 2 wherein the sum of the concentration of the blocked isomers and of the highly branched isomers is above 60 wt % based on the total weight of the mixture.

7. The composition of claim 2 wherein the sum of the concentration of the blocked isomers and of the highly branched isomers is above 75 wt % based on the total weight of the mixture.

8. The composition of claim 1 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters comprises 2,2-dimethyl 3,3-dimethyl pentanoic acid glycidyl ester, 2-methyl 2-isopropyl 3-methyl butanoic acid glycidyl ester, 2-methyl 2-ethyl 3,3-dimethyl butanoic acid glycidyl ester, 2,2-dimethyl 3-methyl 4-methyl pentanoic acid glycidyl ester and 2,2-dimethyl 4,4-dimethyl pentanoic acid glycidyl ester in an amount above 40 wt % based on the weight of the mixture.

9. The composition of claim 8 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters 2,2-dimethyl 3,3-dimethyl pentanoic acid glycidyl ester, 2-methyl 2-isopropyl 3-methyl butanoic acid glycidyl ester, 2-methyl 2-ethyl 3,3-dimethyl butanoic acid glycidyl ester, 2,2-dimethyl 3-methyl 4-methyl pentanoic acid glycidyl ester and 2,2-dimethyl 4,4-dimethyl pentanoic acid glycidyl ester in an amount above 50w t % based on the weight of the mixture.

10. The composition of claim 8 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters 2,2-dimethyl 3,3-dimethyl pentanoic acid glycidyl ester, 2-methyl 2-isopropyl 3-methyl butanoic acid glycidyl ester, 2-methyl 2-ethyl 3,3-dimethyl butanoic acid glycidyl ester, 2,2-dimethyl 3-methyl 4-methyl pentanoic acid glycidyl ester and 2,2-dimethyl 4,4-dimethyl pentanoic acid glycidyl ester in an amount above 60 wt % based on the weight of the mixture.

11. The composition of claim 1 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters comprises 2-methyl 2-ethyl hexanoic acid glycidyl ester in an amount of below 40 wt % based on the weight of the mixture.

12. The composition of claim 11 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters comprises 2-methyl 2-ethyl hexanoic acid glycidyl ester in an amount of below 30 wt % based on the weight of the mixture.

13. The composition of claim 11 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters comprises 2-methyl 2-ethyl hexanoic acid glycidyl ester in an amount of below 20 wt % based on the weight of the mixture.

14. A process to prepare the hydroxyl functional acrylic resin composition of claim 1 comprising incorporating the mixture of α,α-branched alkane carboxylic glycidyl esters comprising epoxy groups into a hydroxyl functional acrylic resins by the reaction of the epoxy group with a carboxylic acid group of ethylene carboxylic acid compounds from hydroxyl ethylene carboxylate ester monomers which are then reacted with one or more unsaturated monomers via a radical polymerization reaction, in one step or more.

15. The composition of claim 1 having a calculated hydroxyl value between 50 and 180 mgKOH/g on solids, or a number average molecular weight (Mn) between 2500 and 50000 Dalton measured according to polystyrene standard.

16. A binder composition useful for a coating composition comprising the hydroxyl functional acrylic resin composition of claim 1 .

17. A metal or plastic substrate coated with a coating composition comprising the binder composition of the claim 16 .

18. The hydroxyl functional acrylic resin composition of claim 1 prepared in presence of a polyester polyol.

19. The composition of claim 1 wherein the sum of the concentration of the blocked isomers and of the highly branched isomers is above 60 wt % based on the total weight of the mixture.

20. The composition of claim 1 wherein the sum of the concentration of the blocked isomers and of the highly branched isomers is above 75 wt % based on the weight of the mixture.

21. The composition of claim 1 wherein the mixture of α,α-branched alkane carboxylic glycidyl esters is derived from butene oligomers.

Assignees

• Momentive Specialty Chem Inc
• Hexion Inc

Inventors

• Heymans Denis
• Steinbrecher Christophe
• Le Fevere De Ten Hove Cédric

Classifications

• Y10T428/31699

  Ester, halide or nitrile of addition polymer · CPC title

• C08F283/002

  on to polymers modified by after-treatment · CPC title

• C09D133/066

  containing -OH groups · CPC title

• C09D163/00

  Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins · CPC title

• C08F8/14

  Esterification · CPC title