HYDROPHILIC ADHESIVE COVER FOR COVERING FLUIDIC DEVICES

• US 20090263652A1
• Filed: 04/15/2009
• Published: 10/22/2009
• Est. Priority Date: 04/18/2008
• Status: Abandoned Application

• Current Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Brauner, Michael
• Application Number:
  US12/424,079
• Publication Number:
  US 20090263652A1
• Time in Patent Office: Days
• US Class Current: 428/339
• CPC Class Codes: C09J 133/06 of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
• CPC Class Codes: C09J 133/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: Y10T 428/269 including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/2891 including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof

Abstract

Embodiments of the present invention concerning an adhesive mixture having an acrylic adhesive and a detergent, an adhesive foil provided with the adhesive mixture, and a test element provided with the adhesive foil are disclosed. The adhesive mixture combines two properties, i.e. hydrophilicity and adhesiveness with one another, thereby making the adhesive mixture suitable for adhesive foils that are used as covers for fluidic devices.

Claims

1. An adhesive foil comprising a carrier foil coated with an adhesive mixture comprising an acrylic adhesive and a detergent.

2. The adhesive foil according to claim 1, wherein a dry layer thickness of the adhesive mixture on the carrier layer foil is in a range from about 5 to about 50 μ

m.

3. The adhesive foil according to claim 1, wherein the carrier foil consists of a material selected from plastic, polyester, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, a metal, a gold foil, and a silver foil.

4. The adhesive foil according to claim 2, wherein the carrier foil consists of a material selected from plastic, polyester, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, a metal, a gold foil, and a silver foil.

5. The adhesive foil according to claim 1, wherein the detergent is octanoyl-N-methylglucamide.

6. The adhesive foil according to claim 1, wherein the detergent is contained in the adhesive mixture in an amount of 2% by weight to 4% by weight based on the solids content of the acrylic adhesive.

7. The adhesive foil according to claim 5, wherein the detergent is contained in the adhesive mixture in an amount of 2% by weight to 4% by weight based on the solids content of the acrylic adhesive.

8. The adhesive foil according to claim 1, wherein the acrylic adhesive is a dispersion of an acrylic acid-based copolymer.

9. The adhesive foil according to claim 6, wherein the acrylic adhesive is a dispersion of an acrylic acid-based copolymer.

10. The adhesive foil according to claim 8, wherein the dispersion has a solids content of 40 to 65% by weight.

11. The adhesive foil according to claim 9, wherein the dispersion has a solids content of 40 to 65% by weight.

12. The adhesive foil according to claim 1, wherein the acrylic adhesive is an acrylic acid-based copolymer formed from at least one of the monomers of formula (I):

CH₂═

CH(R¹)(COOR²)  

 

(I),

in which R¹═

H or C₁-C₁₀ alkyl, and R²═

H or C₁-C₃₀ alkyl.

13. The adhesive foil according to claim 11, wherein the acrylic adhesive is an acrylic acid-based copolymer formed from at least one of the monomers of formula (I):

CH₂═

CH(R¹)(COOR²)  

 

(I),

in which R¹═

H or C₁-C₁₀ alkyl, and R²═

H or C₁-C₃₀ alkyl.

14. The adhesive foil according to claim 12, wherein the acrylic acid-based copolymer has at least one of the following monomers:

acrylic acid, an acrylic acid ester selected from methyl, ethyl, butyl, i-butyl and 2-ethylhexyl acrylate, methacrylic acid or/and a methacrylic acid ester selected from methyl, ethyl, butyl, i-butyl and 2-hydroxyethyl methacrylates.

15. The adhesive foil according to claim 13, wherein the acrylic acid-based copolymer has at least one of the following monomers:

acrylic acid, an acrylic acid ester selected from methyl, ethyl, butyl, i-butyl and 2-ethylhexyl acrylate, methacrylic acid or/and a methacrylic acid ester selected from methyl, ethyl, butyl, i-butyl and 2-hydroxyethyl methacrylates.

16. A test element comprising the adhesive foil according to claim 1.

17. A test element comprising the adhesive foil according to claim 2.

18. A test element comprising the adhesive foil according to claim 3.

19. A test element comprising the adhesive foil according to claim 4.

20. A test element comprising the adhesive foil according to claim 5.

21. A test element comprising the adhesive foil according to claim 6.

22. A test element comprising the adhesive foil according to claim 7.

23. A test element comprising the adhesive foil according to claim 8.

24. A test element comprising the adhesive foil according to claim 9.

25. A test element comprising the adhesive foil according to claim 10.

26. A test element comprising the adhesive foil according to claim 11.

27. A test element comprising the adhesive foil according to claim 12.

28. A test element comprising the adhesive foil according to claim 13.

29. A test element comprising the adhesive foil according to claim 14.

30. A test element comprising the adhesive foil according to claim 15.

31. The test element according to claim 16, wherein the test element has fluidic structures.

32. The test element according to claim 16, wherein the detergent acts as a cover to the test element.