Amino alcohol treatment for sol-gel conversion coatings, substrates including the same, and methods of making the substrates

Patent metadata

Field	Value
Publication number	US-9562000-B2
Application number	US-201414180918-A
Country	US
Kind code	B2
Filing date	Feb 14, 2014
Priority date	Feb 14, 2014
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

An article includes a substrate, a sol-gel conversion coating on at least a portion of the substrate, and a treatment layer on at least a portion of the sol-gel conversion coating. The treatment layer includes an amino alcohol. A method of manufacturing the article includes applying a partially cured sol-gel composition to at least a portion of a substrate, at least partially drying the partially cured sol-gel composition to form the sol-gel conversion coating, applying a solution including an amino alcohol to at least a portion of the sol-gel conversion coating, and at least partially drying the solution including the amino alcohol.

First claim

What is claimed is:

1. An article, comprising:
a substrate;
a sol-gel conversion coating on at least a portion of the substrate, the sol-gel conversion coating comprising a functional group; and
a treatment layer on at least a portion of the sol-gel conversion coating, the treatment layer formed from a solution comprising an amino alcohol present in the solution in an amount of 0.4 vol % to 40 vol %, based on total volume of the solution, wherein an amine group of the amino alcohol reacts with the functional group of the sol-gel conversion coating to form an amine linkage.

2. The article of claim 1 , further comprising a coating layer on at least a portion of the treatment layer, the coating layer comprising a second functional group, wherein a hydroxyl group of the amino alcohol of the treatment layer reacts with the second functional group of the coating layer.

3. The article of claim 2 , wherein the coating layer comprises a polyurethane-based coating composition.

4. The article of claim 1 , wherein the amino alcohol comprises a compound represented by [N(R 1 )(R 2 )] z —R—(R′—OH) x R″ y , wherein:
x is 1 to 3;
y is 0 to 2;
z is 1 to 3;
x+y+z=4;
R 1 and R 2 each independently comprise a hydrogen atom or a C1 to C6 alkyl group, and when z is greater than 1, each R 1 and each R 2 may be the same or different;
R and R′ each independently comprise a C1 to C30 alkylene group, and when x is greater than 1, each R′ may be the same or different; and
R″ comprises a hydrogen atom or a C1 to C30 alkyl group, and when y is greater than 1, each R″ may be the same or different.

5. The article of claim 4 , wherein x equals 1.

6. The article of claim 1 , wherein the amino alcohol comprises tris(hydroxymethyl)aminomethane, amino methyl propanediol, amino ethyl propanediol, amino methyl propanol, dimethyl amino ethanol, amino hydroxyethyl pentanediol, amino pentanediol, and/or amino methyl butanol.

7. The article of claim 1 , wherein the amino alcohol comprises tris(hydroxymethyl)aminomethane.

8. An article, comprising:
a substrate;
a sol-gel conversion coating on at least a portion of the substrate, the sol-gel conversion coating comprising a functional group;
a treatment layer on at least a portion of the sol-gel conversion coating, the treatment layer formed from a solution comprising an amino alcohol present in the solution in an amount of 0.4 vol % to 40 vol %, based on total volume of the solution, wherein an amine group of the amino alcohol reacts with the functional group of the sol-gel conversion coating to form an amine linkage; and
a coating layer on at least a portion of the treatment layer, the coating layer comprising a polyurethane-based coating composition comprising an isocyanate group, wherein the isocyanate group reacts with a hydroxyl group of the amino alcohol to form a urethane linkage.

9. The article of claim 8 , wherein the amino alcohol comprises a compound represented by [N(R 1 )(R 2 )] z —R—(R′—OH) x R″ y , wherein:
x is 1 to 3;
y is 0 to 2;
z is 1 to 3;
x+y+z=4;
R 1 and R 2 each independently comprise a hydrogen atom or a C1 to C6 alkyl group, and when z is greater than 1, each R 1 and each R 2 may be the same or different;
R and R′ each independently comprise a C1 to C30 alkylene group, and when x is greater than 1, each R′ may be the same or different; and
R″ comprises a hydrogen atom or a C1 to C30 alkyl group, and when y is greater than 1, each R″ may be the same or different.

10. The article of claim 8 , wherein the amino alcohol comprises tris(hydroxymethyl)aminomethane.

11. The article of claim 1 , wherein the article comprises an aerospace vehicle part.

12. The article of claim 8 , wherein the article comprises an aerospace vehicle part.

Assignees

• Prc Desoto Int Inc

Inventors

• Keil Charles
• Albers Richard

Classifications

• C23C18/1295

  with after-treatment of the deposited inorganic material · CPC title

• C07C215/10 Primary

  with one amino group and at least two hydroxy groups bound to the carbon skeleton · CPC title

• C23C18/1254 Primary

  Sol or sol-gel processing · CPC title

• Y10T428/31551

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

• C09D175/04

  Polyurethanes · CPC title