Waterborne damping composition

Patent metadata

Field	Value
Publication number	US-10640581-B2
Application number	US-201816127749-A
Country	US
Kind code	B2
Filing date	Sep 11, 2018
Priority date	Oct 11, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

A waterborne sound and vibration damping composition including a waterborne emulsion polymer, the polymer having a calculated acid number of from 2 to 100; from 0.1% to 50%, solids based on emulsion polymer solids, of certain liquid compounds having a boiling point greater than 150° C.; and a solid filler at a level of from 25% to 85% PVC; wherein the waterborne damping composition has a water content of from 6% to 25% by weight is provided. A method for providing a coated substrate using the waterborne damping composition and a substrate so coated are also provided.

First claim

What is claimed is:

1. A waterborne damping composition comprising:
a waterborne emulsion polymer, said polymer having a calculated acid number of from 2 to 100; from 0.1% to 50%, solids based on emulsion polymer solids, of a liquid compound having a boiling point greater than 150° C. which is an acid group-reactive liquid compound having epoxide functionality; and a solid filler;

wherein said waterborne damping composition has a PVC of from 25% to 85%; and wherein said waterborne damping composition has a water content of from 6% to 25% by weight.

2. The waterborne damping composition of claim 1 wherein the calculated acid number of said polymer is from 2 to 65.

3. The waterborne damping composition of claim 1 wherein the water content of said waterborne damping composition is from 6% to 20% by weight.

4. The waterborne damping composition of claim 1 wherein said acid-group-reactive liquid compound is an epoxy-functional resin having a calculated epoxide equivalent weight of from 105 to 250.

5. A method for providing a coated substrate comprising:
 (a) forming a waterborne damping composition comprising:
a waterborne emulsion polymer, said polymer having a calculated acid number of from 2 to 100; from 0.1% to 50%, solids based on emulsion polymer solids, of a liquid compound having a boiling point greater than 150° C. which is an acid group-reactive liquid compound having epoxide functionality; and a solid filler;
wherein said waterborne damping composition has a PVC of from 25% to 85%; and wherein said waterborne damping composition has a water content of from 6% to 25% by weight;
 (b) applying said waterborne damping composition to a substrate; and
 (c) drying said applied waterborne damping composition at a temperature of from 25° C. to 250° C.

6. The method for providing a coated substrate of claim 5 wherein the acid number of said polymer is from 2 to 65.

7. The method for providing a coated substrate of claim 5 wherein the water content of said waterborne damping composition is from 6% to 25% by weight.

8. The method for providing a coated substrate of claim 5 wherein said acid-group-reactive liquid compound is an epoxy-functional resin having a calculated epoxide equivalent weight of from 105 to 250.

9. A coated substrate formed by the method of claim 5 .

10. The coated substrate of claim 9 wherein the 48 hour water pickup of said coating is less than 25% by weight.

11. The coated substrate of claim 9 wherein the 24 hour water pickup of said coating is less than 15% by weight.

12. The waterborne damping composition of claim 1 wherein said acid-group-reactive liquid compound is an epoxy-functional resin.

13. The method of claim 5 wherein said acid-group-reactive liquid compound is an epoxy-functional resin.

Assignees

• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Baikerikar Kiran K
• Drumright Ray E
• Fu Zhenwen
• Gimbal Justin
• Gorin Craig F
• Langille Mark

Classifications

• C09D5/028

  Pigments; Filters · CPC title

• C08F220/06

  Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof · CPC title

• C08F230/02

  containing phosphorus · CPC title

• C09D143/02 Primary

  Homopolymers or copolymers of monomers containing phosphorus · CPC title

• C08G59/063

  with epihalohydrins · CPC title