US4048253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive coatings from ether-type polyester, urethane elastomer, and polyisocyanate
Assignee: Fujifilm Holdings Corp
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Filing: 1975-09-10
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Granted: 1977-09-13
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Expires: 1995-09-10
Abstract
Abstract The present invention provides adhesive compositions of improved adhesion which comprise (a) an ether-type polyester obtained by the heat treatment of a polyethylene-terephthalate with at least one glycol having at least 3 carbon atoms to interchange the ethylene glycol components in the polyethylene-terephthalate, and (b) a linear thermoplastic high molecular weight urethane elastomer. Embodiments include an adhesive composition, comprising component (a) and component (b) plus (c) a polyisocyanate and an adhesive coating composition comprising an ether-type polyester obtained by the heat treatment of a polyethylene terephthalate with at least one glycol having at least 3 carbon atoms to interchange the ethylene glycol components in the polyethylene terephthalate, a polyisocyanate and a pigment.
Inventors
- 👤 Seiichi Ooba
- 👤 Shinichi Hirayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:47
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/02; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/4211; C08G18/4213; C08K; C08K3/00; C08K3/01; C08K3/013; C08K5/00; C08K5/0008; C08K5/0041; C08L; C08L67/00; C08L67/02; C08L75/00; C08L75/04; C09D175/00; C09D175/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
An adhesive composition consisting essentially of an ether group containing polyester obtained by the heat treatment of a polyethylene terephthalate with at least one glycol having at least 3 carbon atoms to substitute the ethylene glycol components in the polyethylene terephthalate by said glycol having at least 3 carbon atoms, wherein 30 to 100% of the ethylene glycol components in the polyethylene terephthalate are substituted by said glycol having 3 or more carbon atoms a linear thermoplastic high molecular weight urethane elastomer; and a polyisocyanate which differs from said elastomer.
Claim 2
Dependent Claim
90 words
An adhesive composition consisting essentially of an ether group containing polyester obtained by the heat treatment of a polyethylene terephthalate with at least one glycol having at least 3 carbon atoms to substitute the ethylene glycol components in the polyethylene terephthalate by said glycol having at least 3 carbon atoms, wherein 30 to 100% of the ethylene glycol components in the polyethylene terephthalate are substituted by said glycol having 3 or more carbon atoms a linear thermoplastic high molecular weight urethane elastomer; and a polyisocyanate which differs from said elastomer.
Claim 3
Dependent Claim
46 words
The adhesive composition as claimed in claim 1, wherein said polyisocyanate is a di-isocyanate selected from the group consisting of m-phenylene-di-isocyanate, p-phenylene-di-isocyanate, 2,6-tolylene-di-isocyanate, 2,4-tolylene-di-isocyanate, naphthalene-1,4-di-isocyanate, diphenylmethane-4,4'di-isocyanate, trimethylene-di-isocyanate and hexamethylene-di-isocyanate; a triisocyanate selected from the group consisting of 4,4',4"triphenylmethane-tri-isocyanate and toluene-2,4,6-tri-isocyanate; or a tetra-isocyanate which is 4,4'-dimethyldiphenyl-methane-2,2',5,5'-tetra-isocyanate.
Claim 4
Dependent Claim
30 words
The adhesive composition as claimed in claim 1, wherein said polyisocyanate is present in an amount of 0.1 to 10% by weight based on the total weight of said composition.
Claim 5
Dependent Claim
18 words
The adhesive composition of claim 1 wherein said polyester amounts to 10-40% by weight of said urethane elastomer.
Claim 6
Dependent Claim
17 words
The adhesive composition of claim 4, wherein said glycol is selected from the group consisting of ##STR9##
Claim 7
Dependent Claim
29 words
The adhesive composition of claim 4, wherein said glycol has the formula HO(CH 2 CH 2 ) n OH wherein n represents an integer of from 2 to 100.
Claim 8
Dependent Claim
19 words
The adhesive composition of claim 1 wherein said urethane elastomer has a molecular weight of from 500 to 5,000.
Claim 9
Dependent Claim
45 words
The adhesive composition of claim 4 wherein said polyisocyanate comprises from 1 to 5% by weight of the adhesive composition and further wherein the amount of the polyisocyanate is from 1 to 3 parts by weight, based on 100 parts by weight of said polyester.
Claim 10
Dependent Claim
18 words
The adhesive composition as claimed in claim 1 further including a solvent which is free of active hydrogens.
Claim 11
Dependent Claim
65 words
The adhesive composition as claimed in claim 1 wherein said urethane elastomer is obtained by the addition reaction of a polyisocyanate and a polyol, a polyamine or an amino alcohol, and has a molecular weight of about 200 to 20,000, and further wherein said polyisocyanate has 2 or more functional groups, and is selected from the group consisting of a diisocyanate, a triisocyanate and tetraisocyanate.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |