Sound damping system

Patent metadata

Field	Value
Publication number	US-2016153187-A1
Application number	US-201414556309-A
Country	US
Kind code	A1
Filing date	Dec 1, 2014
Priority date	Dec 1, 2014
Publication date	Jun 2, 2016
Grant date	—

Abstract

A laminated panel is disclosed that includes a first layer having an internal surface and an external surface, a second layer having an internal surface and an external surface, and a glue layer extending therebetween. The glue layer is produced from an aqueous dispersion of polymeric acrylic microparticles.

First claim

The invention claimed is

1 . A laminated panel comprising:
a first layer having an internal surface and an external surface; a second layer having an internal surface and an external surface; and a glue layer extending between and at least partially covering said internal surface of said first and second layers, said glue layer produced from an aqueous dispersion of polymeric acrylic microparticles.

2 . The panel of claim 1 , wherein said polymeric acrylic microparticles are prepared from a reaction mixture comprising (i) a hydroxy-functional monomer, (ii) an acid functional monomer, and (iii) an ethylenically unsaturated monomer that is different from monomer (i).

3 . The panel claim 1 , wherein said hydroxy-functional monomer (i) comprises a hydroxyalkyl (meth)acrylate or a caprolactone adduct thereof or both.

4 . The panel of claim 2 , wherein said acid-functional monomer (ii) comprises an ethylenically unsaturated carboxylic acid monomer.

5 . The panel of claim 2 , wherein said ethylenically unsaturated monomer (iii) comprises a (meth)acrylate monomer.

6 . The panel of claim 2 , wherein said aqueous dispersion further comprises a plasticizer.

7 . The panel of claim 6 , wherein said plasticizer comprises an itaconate plasticizer.

8 . The panel of claim 2 , wherein said aqueous dispersion further comprises rosin.

9 . The panel of claim 1 , further comprising a coating composition provided on at least a portion of at least one of said external surfaces, said coating composition comprising another aqueous dispersion of polymeric acrylic microparticles.

10 . The panel of claim 1 , Wherein said first layer or said second layer or both comprise gypsum.

11 . A laminated panel comprising:
a first portion comprising a constrained layer of viscoelastic material; and a second portion comprising an extensional layer of viscoelastic material.

12 . The panel of claim 11 , wherein said first portion further comprises a pair of constraining members, said constrained layer being received between said constraining members.

13 . The panel of claim 11 , wherein said constrained layer comprises a polymeric material produced from an aqueous dispersion of polymeric acrylic microparticles.

14 . The panel of claim 13 , wherein said polymeric acrylic microparticles are prepared from a reaction mixture comprising (i) a hydroxy-functional monomer, (ii) an acid-functional monomer, and (iii) an ethylenically unsaturated monomer that is different from monomer (i).

15 . The panel of claim 14 , wherein said aqueous dispersion further comprises a plasticizer.

16 . The panel of claim 15 , wherein said plasticizer comprises an itaconate plasticizer.

17 . The panel of claim 14 , wherein said aqueous dispersion further comprises rosin.

18 . The panel of claim 12 , wherein said constraining members comprise gypsum.

19 . The panel of claim 11 , wherein said extensional layer comprises a polymeric material produced from an aqueous dispersion of polymeric acrylic microparticles and a filler material comprising 20 to 90 weight percent of the coating layer composition.

20 . The panel of claim 19 , wherein said polymeric acrylic microparticles are prepared from a reaction mixture comprising (i) a hydroxy-functional monomer, (ii) an acid-functional monomer, and (iii) an ethylenically unsaturated monomer that is different from monomer (i).

Assignees

• Ppg Ind Ohio Inc

Inventors

• Desai Umesh C
• Pelinescu Ion
• Chao Tien-Chieh

Classifications

• B32B7/12 Primary

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B2264/06

  Vegetal particles · CPC title

• B32B2607/02

  Wall papers, wall coverings · CPC title

• E04B1/8409 Primary

  sheet-shaped · CPC title

• B32B2307/102

  Insulating · CPC title