IP Library Patent Application 16899797
Patent Application
App. No. 16/899,797

ADHESIVE TAPE FOR BONDING TEXTILE MATERIALS

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Quick Facts
Patent No.
US None
App. No.
16/899,797
Abstract

The present application is directed to an adhesive tape comprising: i) a first release liner; and, ii) a pressure sensitive adhesive layer disposed on said first release liner, wherein said pressure sensitive adhesive layer is obtained by curing an adhesive composition comprising: a) an acrylic base copolymer obtained from a monomer mixture comprising at least one C1-C12 alkyl ester of (meth)acrylic acid and at least one acid monomer selected from acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid; b) a metal chelate cross-linking agent; c) at least one tackifying resin; d) an organic solvent; and, optionally e) additives. The adhesive tape optionally comprises iii) a second release liner which is disposed on that side of said pressure sensitive adhesive layer opposite to said first release liner.

Claims (32)

1 . A tape comprising:

i) a first release liner; and,

ii) a pressure sensitive adhesive layer disposed on said first release liner, wherein said pressure sensitive adhesive layer is obtained by curing an adhesive composition comprising:

a) an acrylic base copolymer obtained from a monomer mixture comprising at least one C1-C12 alkyl ester of (meth)acrylic acid and at least one acid monomer selected from acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid;

b) a metal chelate cross-linking agent;

c) at least one tackifying resin;

d) an organic solvent; and, optionally

e) additives,

said tape optionally comprising iii) a second release liner which is disposed on that side of said pressure sensitive adhesive layer opposite to said first release liner.

2 . The tape according to claim 1 having a width of from 5 to 20 mm.

3 . The tape according to claim 1 , wherein the or each release liner comprises a carrier film which is provided on one or both sides with a release layer,

wherein the carrier film comprises a polyethylene terephthalate and said release layer comprises an silicone release agent.

4 . The tape according to claim 1 , wherein the pressure sensitive adhesive layer is characterized by:

a dry film thickness of from 3 to 250 μm, and

a coating weight of from 3 to 250 g/m 2 .

5 . The tape according to claim 1 , wherein the pressure sensitive adhesive layer comprises, based on the total weight of the adhesive layer:

from 60 to 80 wt. % of said acrylic base copolymer; and,

from 20 to 50 wt. % of said tackifying resin.

6 . The tape according to claim 1 , wherein the adhesive composition is solvent borne.

7 . The tape according to claim 1 , wherein the adhesive composition comprises an acrylic base copolymer obtained from a monomer mixture comprising, by weight of the monomers: from 70 to 99 wt. % of a mixture of at least two C1-C12 alkyl esters of (meth)acrylic acid; and, from 1 to 30 wt. % of said at least one acid monomer.

8 . The tape according to claim 7 , wherein the adhesive composition comprises an acrylic base copolymer obtained from a monomer mixture consisting, by weight of the monomers, of:

a) from 90 to 99 wt. % of a mixture of 2-ethylhexyl acrylate and n-butyl acrylate; and,

b) from 1 to 10 wt. of an acrylic acid.

9 . The tape according to claim 1 , wherein said metal chelate crosslinking agent is a complex of:

a metal selected from the group consisting of Al, Ti, Fe, Co, Ba, Zr, K and Zn; and,

a 1,3-dicarbonyl ligand-providing organic compound.

10 . The tape according to claim 9 , wherein said metal chelate crosslinking agent is aluminium acetvlacetonate or titanium acetylacetonate.

11 . The tape according to claim 1 , wherein the adhesive composition comprises at least one tackifying resin, wherein: i) each said resin has a softening point of from 60 to 120° C.; and, ii) each said resin is a rosin ester resin selected from the group consisting of: gum rosin ester resins; hydrogenated gum rosin ester resins; wood rosin ester resins; hydrogenated wood rosin ester resins; tall oil rosin ester resins; and, hydrogenated tall oil rosin ester resins.

12 . The tape according to claim 11 , wherein the adhesive composition comprises a first rosin ester resin having a softening point of from 70 to 90° C. and a second rosin ester resin having a softening point of from 90 to 110° C.

13 . The tape according to claim 1 , wherein the organic solvent of the adhesive composition comprises, by weight of the solvent, at least 50 wt. % of ethyl acetate.

14 . A dispensing device comprising the tape of claim 1 .

15 . The dispensing device of claim 14 which is a textile.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 22, 2022
From: HENKEL IP & HOLDING GMBH
To: HENKEL AG & CO. KGAA
Reel/Frame 059207/0627 →