Patent US3917551A successfully refreshed from Google Patents.
US3917551A
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US
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Hot melt adhesive
Assignee: Phillips Petroleum Co
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Filing: 1974-06-07
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Granted: 1975-11-04
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Expires: 1994-06-07
Abstract
Abstract A hot melt adhesive is disclosed consisting essentially of rubber, tackifier and liquid polybutadiene as the extenderplasticizer.
Inventors
- 👤 Lawrence D Jurrens
- 👤 Leo L Gingerich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:36
CPC Classifications
C; C09; C09J; C09J115/00; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A HOT MELT ADHESIVE COMPOSITION CONSISTING ESSENTIALLY OF A HYDROGENATED COPOLYMER OF A SUBSTITUTED OR UNSUBSTITUTED ALKADIENE HAVING 4-12 CARBON ATOMS AND A SUBSTITUTED OR UNSUBSTITUTED VINYLSUBSTITUTED AROMATIC MONOMER HAVING 8-16 CARBON ATOMS PER MOLECULE WHEREIN SUBSTANTIALLY ALL OF THE OLEFIN UNSATURATION IS HYDROGENATED, LEAVING THE AROMATIC UNSATURATION, A TACKIFIER AND ABOUT 10 TO ABOUT 30 PARTS BY WEIGHT PER ABOUT 40 TO ABOUT 70 PARTS BY WEIGHT OF THE COPOLYMER OF A LIQUID POLYALKADIENE HAVING ALKADINE UNITS OF 4-12 CARBON ATOMS PER MOLECULE, HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 500 TO ABOUT 10,000 AND BEING SUBSTANTIALLY FREE OF OTHER FUCTIONAL GROUPS THAN C=C DOUBLE BONDS.
Claim 2
Dependent Claim
111 words
A HOT MELT ADHESIVE COMPOSITION CONSISTING ESSENTIALLY OF A HYDROGENATED COPOLYMER OF A SUBSTITUTED OR UNSUBSTITUTED ALKADIENE HAVING 4-12 CARBON ATOMS AND A SUBSTITUTED OR UNSUBSTITUTED VINYLSUBSTITUTED AROMATIC MONOMER HAVING 8-16 CARBON ATOMS PER MOLECULE WHEREIN SUBSTANTIALLY ALL OF THE OLEFIN UNSATURATION IS HYDROGENATED, LEAVING THE AROMATIC UNSATURATION, A TACKIFIER AND ABOUT 10 TO ABOUT 30 PARTS BY WEIGHT PER ABOUT 40 TO ABOUT 70 PARTS BY WEIGHT OF THE COPOLYMER OF A LIQUID POLYALKADIENE HAVING ALKADINE UNITS OF 4-12 CARBON ATOMS PER MOLECULE, HAVING A WEIGHT AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 500 TO ABOUT 10,000 AND BEING SUBSTANTIALLY FREE OF OTHER FUCTIONAL GROUPS THAN C=C DOUBLE BONDS.
Claim 3
Dependent Claim
23 words
A composition in accordance with claim 1 wherein the polyalkadiene has a weight average molecular weight of about 2, 000 to about 8,000.
Claim 4
Dependent Claim
34 words
A composition in accordance with claim 1 wherein the alkadiene monomer of the copolymer is selected from the group consisting of butadiene and isoprene and the monovinyl-substituted aromatic monomer of the copolymer is styrene.
Claim 5
Dependent Claim
39 words
A composition in accordance with claim 3 wherein the polymer is a hydrogenated butadiene-styrene copolymer having a butadiene content of about 30 to about 44 weight percent and a styrene content of about 70 to about 56 weight percent.
Claim 6
Dependent Claim
12 words
A composition in accordance with claim 1 wherein the polyalkadiene is polybutadiene.
Claim 7
Dependent Claim
29 words
A composition in accordance with claim 5 wherein the polybutadiene has a weight average molecular weight of about 5, 000 and a viscosity of about 75-125 poise at 77*F.
Claim 8
Dependent Claim
50 words
A hot melt adhesive composition according to claim 1 wherein said tackifier is selected from the group consisting of pentaerythritol ester of hydrogenated rosin, thermpolastic olefin resin tackifiers, thermoplastic hydrocarbon resin tackifiers, glycerol ester of hydrogenated rosin, wood resin tackfiers, resin ester tackifiers, polyterpene tackifiers and thermoplastic olefin resin tackifiers.
Claim 9
Dependent Claim
43 words
A composition in accordance with claim 7 comprising about 40 to about 70 parts by weight of said copolymer, about 50 to about 90 parts by weight of said tackifier, and about 10 to about 30 parts by weight of said liquid polyalkadiene.
Claim 10
Dependent Claim
31 words
A composition in accordance with claim 8 comprising about 1 to about 10 parts by weight of at least one additive selected from the group consisting of stabilizers, pigments, and antioxidants.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |