EP0342811A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pressure-sensitive adhesive having improved adhesion to plasticized vinyl substrates
Assignee: 3M Co
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Filing: 1989-04-28
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Granted: —
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Expires: 2009-04-28
Abstract
Abstract Normally tacky and pressure-sensitive adhesive, having excellent long-term adhesion to plasticized vinyl substrates, is prepared from a representative blend of dioctyl phthalate plasticizer and a copolymer of isooctyl acrylate, N-vinyl pyrrolidone, and acrylic acid; alternatives for each component are disclosed. In a preferred embodiment of the invention, the adhesive is coated in a thin layer on a sheet backing material to form a normally tacky and pressure-sensitive adhesive tape.
Inventors
- 👤 Donald T. C/O Minnesota Mining And Landin
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 22:10
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C09J4/00; C09J4/06; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2809; Y10T428/2852; Y10T428/2878; Y10T428/2887; Y10T428/2891
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
Normally tacky and pressure-sensitive adhesive having outstanding ability to bond to plasticized vinyl substrates and to remain firmly bonded thereto even after remaining in contact therewith for extended periods of time, comprising: a copolymer of monomers consisting essentially of 60-88 parts of acrylic acid ester of 4-14 carbon alcohol, 2-30 parts of nitrogen-containing vinyl monomer, and 0-12 parts of vinyl carboxylic acid, said copolymer being intimately blended with 2-35 % of plasticizer based on said copolymer.
Claim 2
Dependent Claim
76 words
Normally tacky and pressure-sensitive adhesive having outstanding ability to bond to plasticized vinyl substrates and to remain firmly bonded thereto even after remaining in contact therewith for extended periods of time, comprising: a copolymer of monomers consisting essentially of 60-88 parts of acrylic acid ester of 4-14 carbon alcohol, 2-30 parts of nitrogen-containing vinyl monomer, and 0-12 parts of vinyl carboxylic acid, said copolymer being intimately blended with 2-35 % of plasticizer based on said copolymer.
Claim 3
Dependent Claim
13 words
The adhesive of claim 1 wherein the acrylic acid ester is isooctyl acrylate.
Claim 4
Dependent Claim
13 words
The adhesive of claim 2 wherein the nitrogen-containing vinyl polymer is N-vinyl pyrrolidone.
Claim 5
Dependent Claim
12 words
The adhesive of claim 2 wherein the nitrogen-containing vinyl polymer is N,N-dimethylacrylamide.
Claim 6
Dependent Claim
13 words
The adhesive of claim 2 wherein the nitrogen-containing vinyl monomer is N,N-pentamethylene acrylamide.
Claim 7
Dependent Claim
13 words
The adhesive of claim 3, 4, or 5 wherein the plasticizer is monomeric.
Claim 8
Dependent Claim
12 words
The adhesive of claim 6 wherein 2-10 parts of plasticizer are employed.
Claim 9
Dependent Claim
21 words
A normally tacky and pressure-sensitive adhesive tape comprising a layer of the adhesive of claim 3 carried by a sheet backing.
Claim 10
Dependent Claim
19 words
The tape of claim 8 wherein the backing is the back surface of a strip of hook-and-loop fastener material.
Claim 11
Dependent Claim
10 words
The tape of claim 8 wherein the adhesive contains microbubbles.
References Cited (Backward Citations)
No citation records indexed.
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