Water-resistant composition

Patent metadata

Field	Value
Publication number	US-10626550-B2
Application number	US-201514950648-A
Country	US
Kind code	B2
Filing date	Nov 24, 2015
Priority date	Nov 24, 2015
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

An example composition includes a cloth, which has on each side thereof, a first waterproofing agent, a barrier which inhibits or prevents environmental degradation, and an elastomeric barrier including a second waterproofing agent. Another example composition includes a cloth with a phenolic resin coating having, on each side thereof, a first waterproofing agent, a barrier which inhibits or prevents environmental degradation, and an elastomeric barrier including a second waterproofing agent.

First claim

What is claimed:

1. An apparatus comprising a speaker component, wherein the speaker component is a surround and the surround is made from a composition comprising:
a cloth treated with a stiffening agent comprising about 0.1-3 wt % of the composition; and
a series of layers on each side of the cloth applied in the following order:
a first layer comprising a first waterproofing agent;
a second layer comprising a barrier which inhibits or prevents environmental degradation, wherein the barrier is an acrylic rubber and the acrylic rubber comprises greater than about 50 wt % of acrylic polymer; and
a third layer comprising an elastomeric barrier comprising a second waterproofing agent.

2. The apparatus of claim 1 , wherein the cloth is about 10-90 wt % of the composition.

3. The apparatus of claim 1 , wherein the cloth is cotton, polyester, or a mixture thereof.

4. The apparatus of claim 1 , wherein the cloth has greater than about 35 and less than about 55 warp threads per inch, and greater than about 35 and less than about 55 weft threads per inch.

5. The apparatus of claim 4 , wherein the cloth has about 46 warp threads per inch and 46 weft threads per inch.

6. The apparatus of claim 1 , wherein the stiffening agent is phenolic resin, an epoxy, urethane, an amino resin, or a polyester.

7. The apparatus of claim 1 , wherein the first waterproofing agent is a fluoropolymer, a silicone, or a hydrocarbon-based material.

8. The apparatus of claim 7 , wherein the fluoropolymer comprises about 20-30 wt % of fluoroalkyl acrylate copolymer and about 1-10 wt % tripropylene glycol.

9. The apparatus of claim 1 , wherein the barrier which inhibits or prevents environmental degradation is about 10-90 wt % of the composition.

10. The apparatus of claim 1 , wherein the elastomeric barrier is about 10-90 wt % of the composition.

11. The apparatus of claim 1 , wherein the elastomeric barrier is a thermoset rubber or a thermoplastic elastomer.

12. The apparatus of claim 11 , wherein the thermoset rubber is SBR, NBR, fluorinated rubber, polyurethane, silicone, or a mixture thereof.

13. The apparatus of claim 12 , wherein the thermoset rubber is a mixture comprising SBR and NBR.

14. The apparatus of claim 13 , wherein the mixture comprises about 15-20 wt % SBR and about 25-30 wt % NBR.

15. The apparatus of claim 11 , wherein the thermoplastic elastomer is styrenic block copolymers, thermoplastic vulcanizates, thermoplastic polyurethane, thermoplastic silicone vulcanizate (TPSiV), or a mixture thereof.

16. The apparatus of claim 1 , wherein the elastomeric barrier comprises about 0.1-5 wt % of the second waterproofing agent.

17. The apparatus of claim 16 , wherein the second waterproofing agent is a fluoropolymer, a silicone, or a hydrocarbon-based material.

18. The apparatus of claim 16 , wherein the fluoropolymer comprises about 20-30 wt % of fluoroalkyl acrylate copolymer and about 1-10 wt % tripropylene glycol.

19. An apparatus comprising a speaker component, wherein the speaker component is a surround and the surround is made from a composition comprising:
a cloth treated with a phenolic resin coating; and
a series of layers on each side of the cloth applied in the following order:
a first layer comprising a first fluoropolymer,
a second layer comprising acrylic rubber, wherein the acrylic rubber comprises greater than about 50 wt % of acrylic polymer, and
a third layer comprising a mixture comprising SBR, NBR, and a second fluoropolymer.

20. A method of producing the composition comprising the cloth of claim 1 , wherein the method comprising:
treating the cloth with a stiffening agent to produce a first treated cloth;
treating the first treated cloth with the first waterproofing agent to produce a second treated cloth;
coating both sides of the second treated cloth with the barrier to produce a coated cloth; and
coating both sides of the coated cloth with the elastomeric barrier comprising the second waterproofing agent.

Assignees

• Bose Corp

Inventors

• Prevoir Shawn J
• Smith Philip Lawrence

Classifications

• H04R2307/025

  Diaphragms comprising polymeric materials · CPC title

• D06N3/106

  Elastomers · CPC title

• H04R2307/029

  Diaphragms comprising fibres · CPC title

• D10B2505/00

  Industrial · CPC title

• D06N3/10

  with styrene-butadiene copolymerisation products {or other synthetic rubbers or elastomers except polyurethanes} · CPC title