Waterborne damping composition

• US 10,640,581 B2
• Filed: 09/11/2018
• Issued: 05/05/2020
• Est. Priority Date: 10/11/2017
• Status: Active Grant

• Current Assignee: Dow Global Technologies LLC (Dow, Inc.), Rohm and Haas Company (Dow, Inc.)
• Original Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Inventors: Baikerikar, Kiran K., Drumright, Ray E., Fu, Zhenwen, Gimbal, Justin, Gorin, Craig F., Langille, Mark
• Primary Examiner(s): Nguyen, Vu A
• Application Number:
  US16/127,749
• Publication Number:
  US 20190106512A1
• Time in Patent Office: 602 Days
• CPC Class Codes: C08F 2/22 Emulsion polymerisation
• CPC Class Codes: C08F 220/06 Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
• CPC Class Codes: C08F 222/06 Maleic anhydride
• CPC Class Codes: C08F 230/02 containing phosphorus
• CPC Class Codes: C08G 2350/00 Acoustic or vibration damping material
• CPC Class Codes: C08G 59/063 with epihalohydrins
• CPC Class Codes: C08G 59/145 Compounds containing one epoxy group
• 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 5/00 Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced electrically insulating plastics, resins or waxes H01B3/30; Filling pastes
• CPC Class Codes: C09D 5/027 Dispersing agents anti-settling agents C09D7/45
• CPC Class Codes: C09D 5/028 Pigments; Filters

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.

Claims

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.

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

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.

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