Adhesive composition and wound dressings or ostomy appliances comprising such adhesive composition

Patent metadata

Field	Value
Publication number	US-10251973-B2
Application number	US-58334504-A
Country	US
Kind code	B2
Filing date	Dec 16, 2004
Priority date	Dec 19, 2003
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

An adhesive composition of a rubbery elastomeric matrix comprising a block-copolymer and a homopolymer where the block-copolymer contains one or more block(s) of a polymerized mono alkenyl arene monomer and one or more block(s) consisting of a linear or branched saturated hydrocarbon chain wherein the homopolymer is a linear or branched saturated hydrocarbon chain made from the same monomer as said block(s) consisting of a linear or branched saturated hydrocarbon chain.

First claim

The invention claimed is:

1. An ostomy appliance with an adhesive wafer comprising a water absorbent adhesive composition comprising a rubbery elastomeric matrix comprising:
a) a styrene-isobutylene-styrene block copolymer, comprising from 15% to 30% polymerized styrene of the block copolymer and
an unsubstituted polyalkylene homopolymer consisting of an unsubstituted polyisobutylene;
b) one or more water-soluble or water swellable hydrocolloids; and
c) does not include a tackifier.

2. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the polymerized styrene has a molecular weight (Mw) between 1000 and 10000.

3. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the homopolymer block consisting of polymerized isobutylene has a molecular weight (Mw) between 20000 and 100000.

4. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the block-copolymer constitutes 1-70% by weight of the composition and wherein the =substituted polyalkylene homopolymer constitutes up to 70% by weight of the composition.

5. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 , wherein the one or more water-soluble or water swellable hydrocolloids constitutes 5-60% by weight of the composition.

6. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the percent expansion of a disc prepared from the composition maintained at 37° C. for 24 hours is from 4 to 12%.

7. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the weight percentage change of initial weight to final weight of the composition after immersion in 9 percent sodium chloride in demineralized water at 37° C. for 1440 minutes is from 481 to 538 percent.

8. An ostomy appliance with an adhesive wafer comprising a water absorbent adhesive composition comprising a rubbery elastomeric matrix consisting essentially of:
a) a styrene-isobutylene-styrene block copolymer, comprising from 15% to 30% polymerized styrene of the block copolymer and an unsubstituted polyalkylene homopolymer consisting of an unsubstituted polyisobutylene; and
b) one or more water-soluble or water swellable hydrocolloids;
c) does not include a tackifier.

9. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the polymerized styrene has a molecular weight (Mw) between 1000 and 10000.

10. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the homopolymer block consisting of polymerized isobutylene has a molecular weight (Mw) between 20000 and 100000.

11. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the block-copolymer constitutes 1-70% by weight of the composition and wherein the unsubstituted polyalkylene homopolymer constitutes up to 70% by weight of the composition.

12. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the one or more water-soluble or water swellable hydrocolloids constitutes 5-60% by weight of the composition.

13. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the percent expansion of a disc prepared from the composition maintained at 37° C. for 24 hours is from 4 to 12%.

14. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the weight percentage change of initial weight to final weight of the composition after immersion in 9 percent sodium chloride in demineralized water at 37° C. for 1440 minutes is from 481 to 538 percent.

15. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein styrene-isobutylene-styrene block copolymer has a Mw of from 65,000 to 100,000.

16. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein styrene-isobutylene-styrene block copolymer has a Mw of from 65,000 to 100,000.

17. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the weight percentage change of initial weight to final weight of the composition after immersion in 9 percent sodium chloride in demineralized water at 37° C. for 1440 minutes is 481 percent.

18. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the weight percentage change of initial weight to final weight of the composition after immersion in 9 percent sodium chloride in demineralized water at 37° C. for 1440 minutes is 538 percent.

19. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the weight percentage change of initial weight to final weight of the composition after immersion in 9 percent sodium chloride in demineralized water at 37° C. for 1440 minutes is 481 percent.

20. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the weight percentage change of initial weight to final weight of the composition after immersion in 9 percent sodium chloride in demineralized water at 37° C. for 1440 minutes is 538 percent.

21. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the styrene-isobutylene-styrene block copolymer is present in the composition at 25% by weight and the unsubstituted polyisobutylene is present in the composition at 25% by weight.

22. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 1 wherein the styrene-isobutylene-styrene block copolymer is present in the composition at 25% by weight and the unsubstituted polyisobutylene is present in the composition at 40% by weight.

23. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the styrene-isobutylene-styrene block copolymer is present in the composition at 25% by weight and the unsubstituted polyisobutylene is present in the composition at 25% by weight.

24. The ostomy appliance with an adhesive wafer comprising the water absorbent adhesive composition according to claim 8 wherein the styrene-isobutylene-styrene block copolymer is present in the composition at 25% by weight and the unsubstituted polyisobutylene is present in the composition at 40% by weight.

Assignees

• Lam Peter Kwok Hing
• Lykke Mads
• Coloplast As

Inventors

• Lam Peter Kwok Hing
• Lykke Mads

Classifications

• C09J153/00

  Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers · CPC title

• A61L15/585 Primary

  Mixtures of macromolecular compounds · CPC title

• A61L24/046

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds (A61L24/043 takes precedence) · CPC title

• C08L2666/02

  Organic macromolecular compounds, natural resins, waxes or and bituminous materials · CPC title

• A61L24/08

  Polysaccharides {(A61L24/043 takes precedence)} · CPC title