US4190565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filled hot-melt adhesives containing modified polyethylene
Assignee: Eastman Chemical Co
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Filing: 1978-08-30
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Granted: 1980-02-26
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Expires: 1998-08-30
Abstract
Abstract The hot-melt adhesives of the present invention comprise a blend of at least one modified polyethylene resin, at least one filler and a tackifying resin. This hot-melt adhesive has a novel combination of properties including excellent aging properties in combination with improved strength, low viscosity, and elevated temperature resistance properties.
Inventors
- 👤 Mary J. Cook
- 👤 Kenneth W. Hyche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:33
CPC Classifications
C; C09; C09J; C09J151/00; C09J151/06; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/54
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
109 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (a) about 35 to 90 percent by weight of at least one modified polyethylene having a saponification number of about 3 to 10 prepared by reacting polyethylene with a member of the group consisting of unsaturated polycarboxylic acid, anhydride and esters thereof, (b) about 10 to 70 percent by weight of at least one filler having a particle size of less than 20 microns, and (c) about 10 to 40 percent by weight of at least one tackifier resin selected from the group consisting of hydrocarbon resin, polyterpene resin and rosin ester resin.
Claim 2
Dependent Claim
109 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (a) about 35 to 90 percent by weight of at least one modified polyethylene having a saponification number of about 3 to 10 prepared by reacting polyethylene with a member of the group consisting of unsaturated polycarboxylic acid, anhydride and esters thereof, (b) about 10 to 70 percent by weight of at least one filler having a particle size of less than 20 microns, and (c) about 10 to 40 percent by weight of at least one tackifier resin selected from the group consisting of hydrocarbon resin, polyterpene resin and rosin ester resin.
Claim 3
Dependent Claim
12 words
An adhesive composition according to claim 1 wherein said filler is talc.
Claim 4
Dependent Claim
16 words
An adhesive composition according to claim 2 wherein said hydrocarbon tackifier resin is DAC-B hydrocarbon resin.
Claim 5
Dependent Claim
105 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (a) about 40 to 60 weight percent of at least one modified polyethylene having a saponification number of about 3 to 10 prepared by reacting polyethylene with a member of the group consisting of unsaturated polycarboxylic acid, anhydride and esters thereof, (b) about 15 to 45 weight percent of at least one filler having a particle size of less than 20 microns, and (c) about 15 to 30 weight percent of at least one tackifier selected from the group consisting of hydrocarbon resin, polyterpene resin, or rosin ester resin.
Claim 6
Dependent Claim
105 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (a) about 40 to 60 weight percent of at least one modified polyethylene having a saponification number of about 3 to 10 prepared by reacting polyethylene with a member of the group consisting of unsaturated polycarboxylic acid, anhydride and esters thereof, (b) about 15 to 45 weight percent of at least one filler having a particle size of less than 20 microns, and (c) about 15 to 30 weight percent of at least one tackifier selected from the group consisting of hydrocarbon resin, polyterpene resin, or rosin ester resin.
Claim 7
Dependent Claim
12 words
An adhesive composition according to claim 5 wherein said filler is talc.
Claim 8
Dependent Claim
16 words
An adhesive composition according to claim 5 wherein said hydrocarbon tackifier resin is DAC-B hydrocarbon resin.
Claim 9
Dependent Claim
103 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (a) about 50 percent by weight of at least one modified polyethylene having a saponification number of about 3 to 10 prepared by reacting polyethylene with a member of the group consisting of unsaturated polycarboxylic acid, anhydride and esters thereof, (b) about 30 percent by weight of at least one filler having a particle size of less than 20 microns and (c) about 20 percent by weight of at least one tackifier resin selected from the group consisting of hydrocarbon resin, polyterpene resin and rosin ester resin.
Claim 10
Dependent Claim
103 words
An adhesive composition capable of being used as a hot melt adhesive comprising a blend of (a) about 50 percent by weight of at least one modified polyethylene having a saponification number of about 3 to 10 prepared by reacting polyethylene with a member of the group consisting of unsaturated polycarboxylic acid, anhydride and esters thereof, (b) about 30 percent by weight of at least one filler having a particle size of less than 20 microns and (c) about 20 percent by weight of at least one tackifier resin selected from the group consisting of hydrocarbon resin, polyterpene resin and rosin ester resin.
Claim 11
Dependent Claim
20 words
An adhesive composition according to claim 7 wherein said modified polyethylene has a saponification number of about 3 to 5.
Claim 12
Dependent Claim
12 words
An adhesive composition according to claim 8 wherein said filler is talc.
Claim 13
Dependent Claim
16 words
An adhesive composition according to claim 9 wherein said hydrocarbon tackifier resin is DAC-B hydrocarbon resin.
References Cited (Backward Citations)
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Cited
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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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |