US5393608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-silicone release polymer
Assignee: Moore Business Forms Inc
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Filing: 1993-05-25
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Granted: 1995-02-28
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Expires: 2013-05-25
Abstract
Abstract A non-silicone release material for use with pressure sensitive adhesives, which contains a copolymer of: (1) an acrylate ester of the formula I: ##STR1## wherein x ranges from about 30 to about 50; and (2) at least one comonomer selected from a vinyl monomer, an acrylate monomer or a methacrylate monomer. Preferably, the acrylate ester is about 1 to about 25% by weight of the copolymer composition. The release material can be used as a backsize for pressure sensitive adhesives, particularly repositionable labels.
Inventors
- 👤 Hung Y. Chao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:23
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/201; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1808; C09J2203/00; C09J2203/334; C09J2301/00; C09J2301/30; C09J2301/302; C09J2433/00; C09J2433/005; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
64 words
A release polymer for use with pressure sensitive adhesives comprising a copolymer of: (1) about 1 to about 25 percent by weight of an acrylate ester of the formula I: ##STR4## wherein x is an integer ranging from 30 to about 50; and (2) at least one comonomer selected from the group consisting of a vinyl monomer, an acrylate monomer and a methacrylate monomer.
Claim 2
Dependent Claim
64 words
A release polymer for use with pressure sensitive adhesives comprising a copolymer of: (1) about 1 to about 25 percent by weight of an acrylate ester of the formula I: ##STR4## wherein x is an integer ranging from 30 to about 50; and (2) at least one comonomer selected from the group consisting of a vinyl monomer, an acrylate monomer and a methacrylate monomer.
Claim 3
Dependent Claim
48 words
The release polymer of claim 1, wherein said at least one comonomer is selected from the group consisting of vinyl acetate, styrene, acrylonitrile, methacrylonitrile, methyl methacrylate, ethyl acrylate, 2-ethyl hexyl acrylate, isooctyl acrylate, isodecyl acrylate, isodecyl methacrylate, isobutyl acrylate, 4-methyl-2-pentyl acrylate, 2-methylbutyl acrylate, isoamyl acrylate and isononyl acrylate.
Claim 4
Dependent Claim
15 words
The release polymer of claim 2, wherein said at least one comonomer is vinyl acetate.
Claim 5
Dependent Claim
19 words
The release polymer of claim 2, wherein said at least one comonomer is methyl methacrylate and 2-ethyl hexyl acrylate.
Claim 6
Dependent Claim
22 words
The release polymer of claim 1, wherein said copolymer has a particle size distribution ranging from about 0.1 to about 200 microns.
Claim 7
Dependent Claim
22 words
The release polymer of claim 1, wherein said copolymer has a particle size distribution ranging from about 0.1 to about 25 microns.
Claim 8
Dependent Claim
14 words
The release polymer of claim 1, wherein said copolymer is prepared by suspension polymerization.
Claim 9
Dependent Claim
41 words
A pressure sensitive adhesive tape comprising a tape substrate, a pressure sensitive adhesive coated onto at least a portion of the face of said tape substrate, and the release polymer of claim 1 coated onto the backside of said tape substrate.
Claim 10
Dependent Claim
35 words
The pressure sensitive adhesive tape of claim 8, wherein said release polymer is coated onto the backside of said tape substrate in a coating weight ranging from about 2 to about 6 g/m 2 .
Claim 11
Dependent Claim
44 words
A repositionable label comprising a label substrate, a pressure sensitive adhesive coated onto at least a portion of the face of said label substrate, and the release polymer of claim 1 coated onto at least a portion of the backside of said label substrate.
Claim 12
Dependent Claim
19 words
The repositionable label of claim 10, wherein said pressure sensitive adhesive comprises a polymer prepared from 2-ethylhexyl acrylate monomer.
Claim 13
Dependent Claim
71 words
A release polymer for use with pressure sensitive adhesives comprising a copolymer of: (1) an acrylate ester of the formula I: ##STR5## wherein x is an integer ranging from 30 to about 50; and (2) at least one comonomer selected from the group consisting of a vinyl monomer, an acrylate monomer and a methacrylate monomer; wherein the copolymer has a particle size distribution ranging from about 0.1 to about 25 microns.
Claim 14
Dependent Claim
71 words
A release polymer for use with pressure sensitive adhesives comprising a copolymer of: (1) an acrylate ester of the formula I: ##STR5## wherein x is an integer ranging from 30 to about 50; and (2) at least one comonomer selected from the group consisting of a vinyl monomer, an acrylate monomer and a methacrylate monomer; wherein the copolymer has a particle size distribution ranging from about 0.1 to about 25 microns.
Claim 15
Dependent Claim
48 words
The release polymer of claim 12, wherein said at least one comonomer is selected from the group consisting of vinyl acetate, styrene, acrylonitrile, methacrylonitrile, methyl methacrylate, ethyl acrylate, 2-ethyl hexyl acrylate, isooctyl acrylate, isodecyl acrylate, isodecyl methacrylate, isobutyl acrylate, 4-methyl-2-pentyl acrylate, 2-methylbutyl acrylate, isoamyl acrylate and isononyl acrylate.
Claim 16
Dependent Claim
15 words
The release polymer of claim 13, wherein said at least one comonomer is vinyl acetate.
Claim 17
Dependent Claim
19 words
The release polymer of claim 13, wherein said at least one comonomer is methyl methacrylate and 2-ethyl hexyl acrylate.
Claim 18
Dependent Claim
22 words
The release polymer of claim 12, wherein said acrylate ester comprises about 1 to about 25% by weight of the copolymer composition.
Claim 19
Dependent Claim
41 words
A pressure sensitive adhesive tape comprising a tape substrate, a pressure sensitive adhesive coated onto at least a portion of the face of said tape substrate, and the release polymer of claim 12 coated onto the backside of said tape substrate.
Claim 20
Dependent Claim
33 words
The pressure sensitive adhesive tape of claim 16, wherein said release polymer is coated onto the backside of said tape substrate in a coating weight ranging from 2 to 6 g/m 2 .
Claim 21
Dependent Claim
39 words
A repositionable label comprising a label substrate, a pressure sensitive adhesive coated onto at least a portion of the face of said label substrate, and the release polymer of claim 12 coated onto the backside of said label substrate.
Claim 22
Dependent Claim
19 words
The repositionable label of claim 18, wherein said pressure sensitive adhesive comprises a polymer prepared from 2-ethylhexyl acrylate monomer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-27 | 1998-08-29 | 1999-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-27 | 2002-08-29 | 2003-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-27 | 2006-08-29 | 2007-02-28 | $7700.00 | Window Closed / Lapsed |