US4618640A
Expired / Lapsed
US
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Hot-melt adhesive compositions comprising a partially (fumarized and/or maleinized) disproportionated rosin ester tackifier
Assignee: Arakawa Chemical Industries Ltd
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Filing: 1984-07-09
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Granted: 1986-10-21
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Expires: 2004-07-09
Abstract
Abstract A hot-melt adhesive composition containing an ethylene copolymer, wax and a tackifying resin as major components, the composition being characterized in that the tackifying resin is partially fumarinized and/or partially maleinized, disproportionated rosin ester.
Inventors
- 👤 Seiichi Tsuchida
- 👤 Yoshihiro Kodama
- 👤 Hiroari Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:53
CPC Classifications
C; C09; C09J; C09J191/00; C09J191/06; C08; C08L; C08L91/00; C08L91/06; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C09J193/00; C09J193/04; C08L2666/00; C08L2666/02; C08L2666/26
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
35 words
A hot melt adhesive composition containing an ethylene copolymer, wax and a tackifying resin as major components, the composition being characterized in that the tackifying resin is partially fumarinized and/or partially maleinized, disproportionated rosin ester.
Claim 2
Dependent Claim
35 words
A hot melt adhesive composition containing an ethylene copolymer, wax and a tackifying resin as major components, the composition being characterized in that the tackifying resin is partially fumarinized and/or partially maleinized, disproportionated rosin ester.
Claim 3
Dependent Claim
28 words
A composition as defined in claim 1 wherein the tackifying resin is fumarinized or maleinized at a ratio of 1.3 to 20 mole % based on the rosin.
Claim 4
Dependent Claim
28 words
A composition as defined in claim 2 wherein the tackifying resin is fumarinized or maleinized at a ratio of 2.6 to 13 mole % based on the rosin.
Claim 5
Dependent Claim
17 words
A composition as defined in claim 1 wherein the tackifying resin is an ester of polyhydric alcohol.
Claim 6
Dependent Claim
15 words
A composition as defined in claim 4 wherein the polyhydric alcohol is glycerin or pentaerythritol.
Claim 7
Dependent Claim
20 words
A composition as defined in claim 1 wherein the tackifying resin has a softening point of 110° to 140° C.
Claim 8
Dependent Claim
20 words
A composition as defined in claim 6 wherein the tackifying resin has a softening point of 115° to 135° C.
Claim 9
Dependent Claim
19 words
A composition as defined in claim 1 wherein the tackifying resin has a molecular weight of 1000 to 1800.
Claim 10
Dependent Claim
19 words
A composition as defined in claim 8 wherein the tackifying resin has a molecular weight of 1100 to 1500.
Claim 11
Dependent Claim
37 words
A composition as defined in claim 1 wherein the ethylene copolymer is a copolymer of ethylene and at least one of vinyl monocarboxylate and acrylate, the copolymer containing 10 to 60% by weight of a polar component.
Claim 12
Dependent Claim
19 words
A composition as defined in claim 10 wherein 15 to 45% by weight of the polar component is contained.
Claim 13
Dependent Claim
25 words
A composition as defined in claim 1 wherein the ethylene copolymer, wax and tackifying resin are used in a ratio ranging from 100:10:20 to 100:400:300.
Claim 14
Dependent Claim
25 words
A composition as defined in claim 1 wherein the ethylene copolymer, wax and tackifying resin are used in a ratio ranging from 100:10:20 to 100:100:200.
Claim 15
Dependent Claim
25 words
A composition as defined in claim 1 wherein the ethylene copolymer, wax and tackifying resin are used in a ratio ranging from 100:20:100 to 100:50:130.
References Cited (Backward Citations)
GB1033115A
Cited
US3632540A
Cited
US3658740A
Cited
US4248770A
Cited
US4302371A
Cited
US4284541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |