Patent US4299934A successfully refreshed from Google Patents.
US4299934A
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Hot melt adhesive composition
Assignee: Eastman Chemical Co
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Filing: 1980-10-02
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Granted: 1981-11-10
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Expires: 2000-10-02
Abstract
Abstract Hot melt adhesive compositions having low melt viscosity and high adhesive strength are disclosed. The compositions include polyesters comprising 1,6-hexanediol and terephthalic acid, blended with a polymeric material comprising a vinyl aromatic polymer derived from a monomer of the formula ##STR1## wherein R is hydrogen or an alkyl group containing 1 to 4 carbon atoms and R 1 is hydrogen, chlorine, alkyl from 1 to 4 carbon atoms or phenyl.
Inventors
- 👤 Frederick D. Petke
- 👤 Richard L. McConnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:34
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C09; C09J; C09J167/00; C09J167/02; C08L; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31786
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
Hot melt adhesive composition comprising (a) about 50-99% by weight of the composition, of a copolyester derived from at least 40 mole % terephthalic acid, and at least 60 mole % 1,6-hexanediol, said copolyester having an I.V. of about 0.45-1.2, and (b) about 50-1% by weight of the composition of a vinyl aromatic polymer of which at least 50% by weight of its polymeric units are derived from at least one monomer having the formula ##STR3## wherein R is hydrogen or an alkyl group containing 1 to 4 carbon atoms and R 1 is hydrogen, chlorine, phenyl or an alkyl group containing 1 to 4 carbon atoms, said vinyl aromatic polymer having an I.V. of about 0.03-0.27.
Claim 2
Dependent Claim
117 words
Hot melt adhesive composition comprising (a) about 50-99% by weight of the composition, of a copolyester derived from at least 40 mole % terephthalic acid, and at least 60 mole % 1,6-hexanediol, said copolyester having an I.V. of about 0.45-1.2, and (b) about 50-1% by weight of the composition of a vinyl aromatic polymer of which at least 50% by weight of its polymeric units are derived from at least one monomer having the formula ##STR3## wherein R is hydrogen or an alkyl group containing 1 to 4 carbon atoms and R 1 is hydrogen, chlorine, phenyl or an alkyl group containing 1 to 4 carbon atoms, said vinyl aromatic polymer having an I.V. of about 0.03-0.27.
Claim 3
Dependent Claim
33 words
Hot melt adhesive composition according to claim 1 wherein said polyester is derived from at least 40 mole % terephthalic acid, at least 60 mole % 1,6-hexanediol, and about 10-40 mole % 1,4-butanediol.
Claim 4
Dependent Claim
34 words
Hot melt adhesive composition according to claim 1 wherein said polyester is derived from at least 40 mole % terephthalic acid, at least 60 mole % 1,6-hexanediol, and about 10-40 mole % diethylene glycol.
Claim 5
Dependent Claim
22 words
Hot melt adhesive composition according to claim 1 comprising about 60-90% by weight polyester and about 40-10% by weight vinyl aromatic polymer.
Claim 6
Dependent Claim
15 words
Hot melt adhesive composition according to claim 1 wherein said vinyl aromatic polymer is polystyrene.
Claim 7
Dependent Claim
17 words
Hot melt adhesive composition according to claim 1 wherein the I.V. of the polyester is about 0.5-0.8.
Claim 8
Dependent Claim
28 words
Hot melt adhesive composition according to claim 1 wherein the polyester is derived from at least 60 mole % terephthalic acid and about 40 mole % isophthalic acid.
Claim 9
Dependent Claim
84 words
Hot melt adhesive composition comprising (a) about 60-90% by weight of the composition, of a polyester derived from at least 40 mole % terephthalic acid, up to about 60 mole % isophthalic acid, at least 60 mole % 1,6-hexanediol, and up to about 40 mole % of a glycol selected from the group consisting of 1,4-butanediol and diethylene glycol, said polyester having an I.V. of about 0.45-1.2, and (b) about 40-10% by weight of the composition of polystyrene having an I.V. of about 0.03-0.27.
Claim 10
Dependent Claim
84 words
Hot melt adhesive composition comprising (a) about 60-90% by weight of the composition, of a polyester derived from at least 40 mole % terephthalic acid, up to about 60 mole % isophthalic acid, at least 60 mole % 1,6-hexanediol, and up to about 40 mole % of a glycol selected from the group consisting of 1,4-butanediol and diethylene glycol, said polyester having an I.V. of about 0.45-1.2, and (b) about 40-10% by weight of the composition of polystyrene having an I.V. of about 0.03-0.27.
Claim 11
Dependent Claim
10 words
A substrate coated with the adhesive composition of claim 1.
Claim 12
Dependent Claim
10 words
A substrate coated with the adhesive composition of claim 8.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |