US3821143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt adhesive composition containing a branched elastomeric copolymer
Assignee: EIDP Inc
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Filing: 1973-03-22
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Granted: 1974-06-28
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Expires: 1993-03-22
Abstract
Abstract A hot melt adhesive composition comprising, in parts by weight, about: A. 100 PARTS OF PETROLEUM WAX, B. 40 TO 200 PARTS OF A TACKIFYING RESIN, AND C. 15 TO 100 PARTS OF A BRANCHED ELASTOMERIC COPOLYMER OF ETHYLENE, AT LEAST ONE C3 to C18 alpha-olefin, at least one direactive nonconjugated diene, and optionally at least one mono-reactive nonconjugated diene; said copolymer having a Mooney viscosity of about 10 to 70.
Inventors
- 👤 E Cluff
- 👤 A Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:52
CPC Classifications
C; C09; C09J; C09J191/00; C09J191/06; C09J191/08; C09J123/00; C09J123/02; C09J123/16; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
8 words
100 to 140 parts of a tackifying resin;
Claim 2
Dependent Claim
12 words
The composition of claim 1 wherein the direactive diene is 2, 5-norbornadiene.
Claim 3
Dependent Claim
9 words
40 to 200 parts of a tackifying resin; and
Claim 4
Dependent Claim
66 words
15 to 100 parts of a branched elastomeric copolymer containing about 40 to 80 percent by weight of ethylene, about 0.01 to 0.5 mole of a direactive nonconjugated diene per kilogram of copolymer, and about 0 to 2 moles of a monoreactive nonconjugated diene per kilogram of copolymer, the balance of the copolymer being propylene; said copolymer having a Mooney viscosity of about 10 to 70.
Claim 5
Dependent Claim
12 words
The composition of claim 1 wherein the direactive diene is 1, 7-octadiene.
Claim 6
Dependent Claim
32 words
20 to 50 parts of a branched elastomeric copolymer having a Mooney viscosity of about 18 to 30 and containing about 0.1 to 0.3 mole direactive nonconjugated diene per kilogram of copolymer.
Claim 7
Dependent Claim
15 words
The composition of claim 1 having a viscosity at 190*C. of about 100 to 10,000.
Claim 8
Dependent Claim
7 words
The composition of claim 4 comprising about:
Claim 9
Dependent Claim
12 words
The composition of claim 5 wherein the direactive diene is 1, 7-octadiene.
Claim 10
Dependent Claim
12 words
The composition of claim 5 wherein the direactive diene is 2, 5-norbornadiene.
Claim 11
Dependent Claim
40 words
The composition of claim 5 wherein the branched elastomeric copolymer contains about 70 to 74 percent by weight ethylene, about 0.1 to 0.3 mole 2,5-norbornadiene per kilogram of copolymer, up to 6 percent by weight 1,4-hexadiene, the balance being propylene.
Claim 12
Dependent Claim
15 words
The composition of claim 5 containing at least one of polypropylene and an extender oil.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |