Patent US453628A successfully refreshed from Google Patents.
USH509H
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Preparation of adhesives
Assignee: Hung-Ya Chao
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Filing: 1987-12-22
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Granted: 1988-08-02
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Expires: 2007-12-22
Abstract
Abstract Adhesives comprising microparticles of acrylate copolymers are formed from higher homologs of acrylates and methacrylates. By varying the type and amount of monomers used in the starting solution the tack level may be varied. Very high tack levels are achieved with compositions made from isodecyl acrylate and 2-ethylhexyl acrylate where acrylic acid, isobornyl acrylate and vinyl pyrrolidone are included in the starting mixture and where polyvinyl alcohol is used to avoid agglomeration.
Inventors
- 👤 Hung-Ya Chao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:19
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1811; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
34 words
An adhesive composition which comprises a copolymer of (a) isodecyl acrylate or 2-ethylhexyl acrylate, and (b) acrylic acid, or vinyl pyrrolidone, the ratio of (a) to (b) by weight being from 99:1 to 85:15.
Claim 2
Dependent Claim
34 words
An adhesive composition which comprises a copolymer of (a) isodecyl acrylate or 2-ethylhexyl acrylate, and (b) acrylic acid, or vinyl pyrrolidone, the ratio of (a) to (b) by weight being from 99:1 to 85:15.
Claim 3
Dependent Claim
28 words
An adhesive composition as in claim 1 wherein said composition consisting essentially of a copolymer of 99 parts weight isodecyl acrylate and 1 part by weight acrylic acid.
Claim 4
Dependent Claim
27 words
An adhesive composition as in claim 1 wherein said composition is a copolymer of 99 parts by weight 2-ethylhexyl acrylate and 1 part by weight acrylic acid.
Claim 5
Dependent Claim
27 words
An adhesive composition as in claim 1 wherein said composition is a copolymer of 85 parts by weight isodecyl acrylate and 15 parts by weight vinyl pyrrolidone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |