Crosslinkable composition, a method of making the same and a crosslinked composition produced therefrom

Patent metadata

Field	Value
Publication number	US-9580622-B2
Application number	US-201414556286-A
Country	US
Kind code	B2
Filing date	Dec 1, 2014
Priority date	Dec 16, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A crosslinkable composition comprising: (i) one or more polycarbamates; (ii) one or more polyaldehydes; (iii) one or more polyols; and (iv) an acid catalyst is provided. Further provided are a method for making the crosslinkable composition, a crosslinked composition made therefrom, a coating comprising the crosslinked composition and articles comprising a substrate and the coating.

First claim

We Claim:

1. A crosslinkable composition comprising: (i) one or more polycarbamates; (ii) one or more polyaldehydes; (iii) one or more polyols; and (iv) an acid catalyst;
wherein the one or more polyols are selected from the group consisting of 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol and 1,4-cyclohexanedimethanol, linear aliphatic polycarbonate polyesters, linear aliphatic polycarbonate diol, and linear aliphatic polyester polyols.

2. The crosslinkable composition according to claim 1 , further comprising a polyisocyanate.

3. The crosslinkable composition according to claim 1 , wherein component (iii) is a linear aliphatic polycarbonate polyester having a weight average molecular weight from 800 to 1200 daltons.

4. The crosslinkable composition according to claim 1 , wherein component (iii) is a linear aliphatic polycarbonate diol having a weight average molecular weight from 450 to 850 daltons.

5. A crosslinked composition produced by curing the crosslinkable composition according to claim 1 , wherein the curing occurs at a temperature from 0 to 80° C.

6. A coating composition comprising the crosslinked composition according to claim 5 .

7. An article comprising a substrate and a coating composition according to claim 6 .

8. The article according to claim 7 , wherein the substrate is one or more selected from the group consisting of woods, composites, concretes, metals, and plastics.

9. A method of making a crosslinkable composition comprising: selecting (i) one or more polycarbamates; selecting (ii) one or more polyaldehydes; selecting (iii) one or more polyols; and mixing components (i)-(iii) in any order; wherein the one or more polyols are selected from the group consisting of 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol and 1,4-cyclohexanedimethanol, linear aliphatic polycarbonate polyesters, linear aliphatic polycarbonate diol, and linear aliphatic polyester polyols.

10. The method of making a crosslinkable composition according to claim 9 wherein components (ii) and (iii) are mixed together prior to addition to component (i).

11. The coating composition according to claim 6 , wherein the coating composition exhibits an improvement in direct impact resistance of at least 50% over the impact resistance of a comparative coating having the same composition with the exception that the comparative coating is produced from a crosslinkable composition which is produced from a crosslinkable composition with no polyol.

12. The coating composition according to claim 6 , wherein the coating composition exhibits an improvement in MEK resistance of at least 50% over the impact resistance of a comparative coating having the same composition with the exception that the comparative coating is produced from a crosslinkable composition which is produced from a crosslinkable composition with no polyol.

Assignees

• Dow Global Technologies Llc

Inventors

• Anderson Jeff R
• Spilman Gary E
• Popa Paul J
• Argyropoulos John N

Classifications

• C09D175/16

  having terminal carbon-to-carbon unsaturated bonds · CPC title

• Y10T428/31551

  Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.] · CPC title

• C08F8/30

  Introducing nitrogen atoms or nitrogen-containing groups · CPC title

• Y10T428/31591

  Next to cellulosic · CPC title

• C09D133/066 Primary

  containing -OH groups · CPC title