Patent US4463115A successfully refreshed from Google Patents.
US4463115A
Expired / Lapsed
US
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Pressure sensitive adhesive composition
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1983-10-07
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Granted: 1984-07-31
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Expires: 2003-10-07
Abstract
Abstract A pressure sensitive adhesive composition comprising (A) a polyether having at least one silicon-containing hydrolyzable group, having an average molecular weight of 300 to 30,000 and having a principal chain which is essentially constructed with the chemically bonded recurring units: -R1-O- wherein R1 is a divalent alkylene group and (B) a tackifier; said tackifier being admixed with the polyether in an amount of 10 to 140 parts by weight per 100 parts by weight of said polyether. From the composition a pressure sensitive adhesive product having good adhesive properties can be prepared substantially without a solvent.
Inventors
- 👤 Toshifumi Hirose
- 👤 Katsuhiko Isayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:15
CPC Classifications
C; C09; C09J; C09J171/00; C09J171/02; C09J183/00; C09J183/10; C09J183/12; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A pressure sensitive adhesive composition comprising (A) a polyether having at least one silicon-containing hydrolyzable group, having an average molecular weight of 300 to 30,000 and having a principal chain which is essentially constructed with the chemically bonded recurring units: --R.sup.1 --O-- wherein R 1 is a divalent alkylene group and (B) a tackifier; said tackifier being admixed with the polyether in an amount of 10 to 140 parts by weight per 100 parts by weight of said polyether.
Claim 2
Dependent Claim
79 words
A pressure sensitive adhesive composition comprising (A) a polyether having at least one silicon-containing hydrolyzable group, having an average molecular weight of 300 to 30,000 and having a principal chain which is essentially constructed with the chemically bonded recurring units: --R.sup.1 --O-- wherein R 1 is a divalent alkylene group and (B) a tackifier; said tackifier being admixed with the polyether in an amount of 10 to 140 parts by weight per 100 parts by weight of said polyether.
Claim 3
Dependent Claim
37 words
The composition of claim 1, wherein said tackifier is a member selected from the group consisting of a rosin ester, a hydrogenated rosin ester, a terpen-phenol resin, a phenol resin, a xylene resin and a xylene-phenol resin.
Claim 4
Dependent Claim
40 words
The composition of claim 1, wherein said principal chain of the polyether is an oxyalkylene polymer which is essentially constructed with the recurring units: --R.sup.2 --O-- wherein R 2 is a divalent alkylene group having 1 to 4 carbon atoms.
Claim 5
Dependent Claim
17 words
The composition of claim 3, wherein said polyether has an average molecular weight of 3,000 to 15,000.
Claim 6
Dependent Claim
16 words
The composition of claim 4, wherein said principal chain of the polyether is essentially a polyoxypropylene.
Claim 7
Dependent Claim
14 words
The composition of claim 1, wherein said silicon-containing hydrolyzable group is an alkoxysilyl group.
Claim 8
Dependent Claim
12 words
The composition of claim 6, wherein said silicon-containing hydrolyzable group is methoxysilyl.
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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) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |