Coated elastomeric article

Patent metadata

Field	Value
Publication number	US-9579426-B2
Application number	US-201514730635-A
Country	US
Kind code	B2
Filing date	Jun 4, 2015
Priority date	Feb 8, 2007
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

This invention relates to an elastomeric article with improved lubricity and donnablity and reduced stickiness/tackiness. According to the methods of the invention, the internal surface of the elastomeric article is coated with a polyisoprene coating. The coating of the invention is formed from synthetic polyisoprene rubber that may or may not contain minor amounts of other components. The coating is preferably directly bonded to the underlying elastomeric article.

First claim

What is claimed is:

1. A coated elastomeric rubber article comprising:
an elastomeric rubber article having a first surface, and
a coating formed from a coating composition comprising synthetic polyisoprene rubber,
wherein the coating is provided on at least a portion of the first surface of the elastomeric rubber article, and
wherein the coating has protrusions made from the coating composition.

2. The coated elastomeric rubber article of claim 1 , wherein the coating is directly bonded to the first surface of the elastomeric rubber article.

3. The coated elastomeric rubber article of claim 1 , wherein the elastomeric rubber article is made from natural rubber, synthetic polyisoprene, polychloroprene, nitrile, carboxylated acrylonitrile butadiene rubber, styrene butadiene rubber, butadiene co-polymer, polyurethane, vinyl, or mixtures thereof.

4. The coated elastomeric rubber article of claim 1 , wherein the coating composition further comprises natural rubber latex, polychloroprene latex, nitrile latex, carboxylated acrylonitrile butadiene rubber latex, styrene butadiene latex, butadiene co-polymer latex, polyurethane latex, or polyvinyl chloride latex.

5. The coated elastomeric rubber article of claim 1 , wherein the coated elastomeric rubber article is treated with a lubricant solution.

6. The coated elastomeric rubber article of claim 1 , wherein the protrusions are in the range of 0.5 microns to 10 microns.

7. The coated elastomeric rubber article of claim 1 , wherein the protrusions do not contain additional particles.

8. The coated elastomeric rubber article of claim 1 , wherein the protrusions comprise synthetic polyisoprene rubber.

9. The coated elastomeric rubber article of claim 1 , wherein the first surface is an internal surface of the elastomeric rubber article.

10. The coated elastomeric rubber article of claim 9 , wherein the elastomeric rubber article is a glove, tube, condom, probe cover, dental dam, finger cot, film, shunt, valve, stent, or implant.

11. The coated elastomeric rubber article of claim 1 , wherein the first surface is an external surface of the elastomeric rubber article.

12. The coated elastomeric rubber article of claim 11 , wherein the elastomeric rubber article is a catheter.

13. The coated elastomeric rubber article of claim 1 , wherein the coated elastomeric rubber article exhibits at least one of improved dry skin lubricity, improved damp skin lubricity, decreased stickiness, increased comfort, increased softness, decreased modulus value, decreased skin irritation, decreased cracking of at least one of an elastomeric surface and the coating when stretched, and decreased flaking of at least one of the elastomeric surface and the coating when stretched as compared to an elastomeric rubber article that comprises the same elastomeric material but is not coated with a coating composition comprising synthetic polyisoprene rubber.

14. The coated elastomeric rubber article of claim 1 , wherein the coating composition used to form the coating has a total solids content of from about 3% to about 15%.

15. The coated elastomeric rubber article of claim 1 , wherein the coating composition used to form the coating has a total solids content of from about 5% to about 8%.

16. The coated elastomeric rubber article of claim 1 , wherein the coated elastomeric rubber article is chlorinated.

17. The coated elastomeric rubber article of claim 1 , wherein the coating composition further comprises a curing agent, and wherein the synthetic polyisoprene rubber is crosslinked to the rubber of the elastomeric rubber article.

18. The coated elastomeric rubber article of claim 17 , wherein the curing agent comprises at least one of sulfur, a sulfur donor, a vulcanization accelerator, an activator, and an antioxidant.

19. The coated elastomeric rubber article of claim 18 , wherein the sulfur donor is selected from the group consisting of tetramethyl thiuram disulfide (TMTD) and tetraethyl thiuram disulfide (TETD).

20. The coated elastomeric rubber article of claim 18 , wherein the vulcanization accelerator is selected from the group consisting of zinc dibutyldithiocarbamate (ZDBC), zinc diethyldithiocarbamate (ZDEC), zinc mercaptobenzthiazole (ZMBT), and diphenyl guanidine (DPG).

21. The coated elastomeric rubber article of claim 18 , wherein the antioxidant is selected from the group consisting of

22. The coated elastomeric rubber article of claim 18 , wherein the activator is selected from the group consisting of zinc oxide and magnesium oxide.

23. A coated elastomeric rubber article comprising:
an elastomeric rubber article having an internal surface and an external surface, and
a coating formed from a coating composition comprising synthetic polyisoprene rubber,
wherein the coating is provided on at least a portion of the internal surface of the elastomeric rubber article or at least a portion of the external surface of the elastomeric rubber article, and
wherein the coating has protrusions made from the coating composition.

24. The coated elastomeric rubber article of claim 23 , wherein the coating is provided on at least a portion of the internal surface of the elastomeric rubber article.

25. A coated elastomeric rubber article comprising:
an elastomeric rubber article having a skin-contacting surface, and
a coating formed from a coating composition comprising synthetic polyisoprene rubber,
wherein the coating is provided on at least a portion of the skin-contacting surface of the elastomeric rubber article, and
wherein the coating has protrusions made from the coating composition.

26. The coated elastomeric article of claim 1 , wherein the coating is applied by dipping, spraying, brushing, flowing or printing.

Assignees

• Allegiance Corp

Inventors

• Chen Seong Fong
• Wang Shiping
• Wong Wei Cheong
• Chong Chuang Sim

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C08J7/042

  with two or more layers, where at least one layer of a composition contains a polymer binder · CPC title

• A41D19/0058 Primary

  Three-dimensional gloves · CPC title

• C08J2321/02

  Latex · CPC title

• A61L31/048

  obtained by reactions only involving carbon-to-carbon unsaturated bonds (A61L31/041 takes precedence) · CPC title