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1. WO2020092568 - ADHÉSIFS SENSIBLES À LA PRESSION ISSUS DE LA POLYMÉRISATION D'ACÉTOACÉTATES ET D'ACRYLATES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

What is claimed is:

1. A pressure sensitive adhesive composition comprising a product made from:

(i) an acetoacetic ester;

(ii) a diacrylate;

(iii) a crosslinking agent that contains more than two acryloyl groups; and

(iv) a catalyst.

2. The composition of claim 1, wherein the acetoacetic ester is an acetoacetic alkyl ester.

3. The composition of claim 1, wherein the acetoacetic ester is an acetoacetic (C1-C4) alkyl ester.

4. The composition of claim 1, wherein the acetoacetic ester has a molecular weight of 240 or less.

5. The composition of claim 1, wherein the acetoacetic ester is methyl acetoacetate, ethyl acetoacetate, propyl acetoacetate, isopropyl acetoacetate, butyl acetoacetate, isobutyl acetoacetate, tert-butyl acetoacetate, 2-methoxyethyl acetoacetate, benzyl acetoacetate, or a mixture thereof.

6. The composition of claim 1, wherein the acetoacetic ester is ethyl acetoacetate.

7. The composition of any one of claims 1 to 6, wherein the diacrylate is polypropylene glycol) diacrylate, poly( 1,3 -propanediol) diacrylate, l,6-hexanediol diacrylate, bisphenol A glycerolate( 1 glycerol/phenol) diacrylate, polyethylene glycol) diacrylate, ethylene glycol diacrylate, an acrylated vegetable oil with two acryloyl groups per molecule, or a mixture thereof.

8. The composition of any one of claims 1 to 6, wherein the diacrylate is polypropylene glycol) diacrylate, acrylated vegetable oil with two acryloyl groups per molecule, or a mixture thereof.

9. The composition of any one of claims 1 to 8, wherein the crosslinking agent is

trimethylolpropane triacrylate, pentaerythritol triacrylate, trimethylolpropane ethoxylate triacrylate, glycerol propoxylate (1PO/OH) triacrylate, trimethylolpropane propoxylate triacrylate, pentaerythritol tetraacrylate, di(trimethylolpropane) tetraacrylate, a (meth)acrylated vegetable oil with more than two acryloyl groups per molecule, or a mixture thereof.

10. The composition of any one of claims 1 to 8, wherein the crosslinking agent is trimethylolpropane triacrylate, a (meth)acrylated vegetable oil with more than two acryloyl groups per molecule, or a mixture thereof.

11. The composition of claim 10, wherein the (meth)acrylated vegetable oil is acrylated epoxidized soybean oil.

12. The composition of any one of claims 1 to 11, wherein the catalyst is 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), l,5-diazabicyclo-[4,3,0]-non-5-ene (DBN), 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD), l,l,3,3-tetramethylguanidine (TMG), or a mixture thereof.

13. The composition of any one of claims 1 to 11, wherein the catalyst is l,5-diazabicyclo-[4,3,0]-non-5-ene (DBN).

14. The composition of any of one claims 1 to 13, wherein the molar ratio of acetoacetic ester/diacrylate/crosslinking agent ranges froml /0.1/0.7 to 1/0.98/0.01.

15. The composition of any one of claims 1 to 14, wherein the acetoacetic ester is present in an amount less than 25% by weight, based on the total dry weight of the composition mixture.

16. The composition of any one of claims 1 to 15, wherein the product is a polymer.

17. A method for making a pressure sensitive adhesive comprising combining:

(i) an acetoacetic ester;

(ii) a diacrylate;

(iii) a crosslinking agent that contains more than two acryloyl groups; and

(iv) a catalyst.

18. The method of claim 17, wherein the acetoacetic ester is ethyl acetoacetate; the diacrylate is polypropylene glycol) diacrylate, acrylated vegetable oil with two acryloyl groups per molecule, or a mixture thereof; the crosslinking agent is trimethylolpropane triacrylate, (meth)acrylated vegetable oil with more than two acryloyl groups per molecule, or a mixture thereof; and the catalyst is 1,5-diazabicyclo-[4,3 ,0] -non -5 -ene (DBN) .

19. The method of claim 17 or 18, wherein the method comprises mixing the acetoacetic ester, the diacrylate, the crosslinking agent, and the catalyst.

20. A pressure sensitive adhesive construct comprising:

(A) a backing substrate; and

(B) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes a product made from:

(i) an acetoacetic ester;

(ii) a diacrylate;

(iii) a crosslinking agent that contains more than two acryloyl groups; and

(iv) a catalyst.

21. The construct of claim 20, wherein the acetoacetic ester is an acetoacetic alkyl ester.

22. The construct of claim 20, wherein the acetoacetic ester is an acetoacetic (C1-C4) alkyl ester.

23. The construct of claim 20, wherein the acetoacetic ester is methyl acetoacetate, ethyl acetoacetate, propyl acetoacetate, isopropyl acetoacetate, butyl acetoacetate, isobutyl acetoacetate, tert-butyl acetoacetate, 2-methoxyethyl acetoacetate, benzyl acetoacetate, or a mixture thereof.

24. The composition of claim 20, wherein the acetoacetic ester is ethyl acetoacetate.

25. The construct of any one of claims 20 to 24, wherein the diacrylate is polypropylene glycol) diacrylate, poly( 1,3 -propanediol) diacrylate, l,6-hexanediol diacrylate, bisphenol A glycerolate( 1 glycerol/phenol) diacrylate, polyethylene glycol) diacrylate, ethylene glycol diacrylate, an acrylated vegetable oil with two acryloyl groups per molecule, or a mixture thereof.

26. The construct of any one of claims 20 to 24, wherein the diacrylate is polypropylene glycol) diacrylate, acrylated vegetable oil with two acryloyl groups per molecule, or a mixture thereof.

27. The construct of any one of claims 20 to 26, wherein the crosslinking agent is

trimethylolpropane triacrylate, pentaerythritol triacrylate, trimethylolpropane ethoxylate triacrylate, glycerol propoxylate (1PO/OH) triacrylate, trimethylolpropane propoxylate triacrylate, pentaerythritol tetraacrylate, di(trimethylolpropane) tetraacrylate, a (meth)acrylated vegetable oil with more than two acryloyl groups per molecule, or a mixture thereof.

28. The construct of any one of claims 20 to 26, wherein the crosslinking agent is trimethylolpropane triacrylate, a (meth)acrylated vegetable oil with more than two acryloyl groups per molecule, or a mixture thereof.

29. The construct of claim 28, wherein the (meth)acrylated vegetable oil is acrylated epoxidized soybean oil.

30. The construct of any one of claims 20 to 29, wherein the catalyst is 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), l,5-diazabicyclo-[4,3,0]-non-5-ene (DBN), 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD), l,l,3,3-tetramethylguanidine (TMG), or a mixture thereof.

31. The construct of any one of claims 20 to 29, wherein the catalyst is l,5-diazabicyclo-[4,3,0]-non-5-ene (DBN).

32. The composition of any of one claims 20 to 31, wherein the molar ratio of acetoacetic ester/diacrylate/crosslinking agent ranges froml /0.1/0.7 to 1/0.98/0.01.

33. The composition of any one of claims 20 to 31, wherein the acetoacetic ester is present in an amount less than 25% by weight, based on the total dry weight of the composition mixture.

34. The construct of any one of claims 20 to 33, wherein the construct is a diaper.

35. The construct of any one of claims 20 to 33, wherein the construct is a training pant.

36. The construct of any one of claims 20 to 33, wherein the construct is a sanitary napkin.

37. The construct of any one of claims 20 to 33, wherein the construct is an incontinence garment.

38. The construct of any one of claims 20 to 33, wherein the construct is a bandage.

39. The construct of any one of claims 20 to 33, wherein the construct is a skin treatment covering.

40. The construct of any one of claims 20 to 33, wherein the construct is a medical tape.

41. The construct of any one of claims 20 to 33, wherein the construct is a wound dressing.

42. A pressure sensitive adhesive -forming product comprising:

a first part that comprises at least one ingredient selected from the group consisting of

(i) an acetoacetic ester;

(ii) a diacrylate; and

(iii) a crosslinking agent that contains more than two acryloyl groups; and a second part that comprises at least one ingredient selected from the group consisting of

(i) an acetoacetic ester;

(ii) a diacrylate; and

(iii) a crosslinking agent that contains more than two acryloyl groups, provided that neither the first part nor the second part includes all three of the ingredients (i), (ii) and (iii).

43. The pressure sensitive adhesive-forming product of claim 42, wherein the first part includes the acetoacetic ester but not the diacrylate and the crosslinking agent, and the second part includes the diacrylate and the crosslinking agent but not the acetoacetic ester.

44. The pressure sensitive adhesive-forming product of claim 42 or 43, further comprising a catalyst included in the first part, or the second part, or separately from the first part and the second part.

45. A polymer made by reacting (i) an acetoacetic ester; (ii) a diacrylate; and (iii) a crosslinking agent that contains more than two acryloyl groups, in the presence of a catalyst.

46. A pressure sensitive adhesive composition comprising the polymer of claim 45.