Patent US4824889A successfully refreshed from Google Patents.
US4824889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-1-butene blend adhesives
Assignee: Shell USA Inc
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Filing: 1987-10-30
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Granted: 1989-04-25
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Expires: 2007-10-30
Abstract
Abstract A hot melt adhesive comprising a blend of: from about 10% by weight to about 90% by weight of a blend of from 10% by weight to 90% by weight of an at least partially crystalline copolymer of butene-1 and ethylene, wherein the ethylene content is from about 1 mole percent to about 20 mole percent of said copolymer, and from 10% by weight to 90% by weight of a butene-1 homopolymer; from about 10% by weight to about 90% by weight of a tackifying resin; and from about 0.1 phr to about 0.5 phr of an antioxidizing agent.
Inventors
- 👤 Simon Mostert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:29
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A hot melt adhesive comprising a blend of: (A) a butene-1-polymer blend of from 10% by weight to 90% by weight of an at least partially crystalline copolymer of butene-1 and ethylene, wherein the ethylene content is from about 1 mole percent to about 20 mole percent of said copolymer, and from 10% by weight to 90% by weight of a butene-1 homopolymer; (B) from about 20% by weight to about 60% by weight of a substantially non-polar tackifying resin selected from the group; consisting of polyterpenes and aliphatic resins from C 5 -C 9 hydrocarbon streams or hydrogenated resins thereof with softening points in a range of 70° C. to 130° C. and (C) from about 0.1 phr to about 0.5 phr of an antioxidizing agent.
Claim 2
Dependent Claim
127 words
A hot melt adhesive comprising a blend of: (A) a butene-1-polymer blend of from 10% by weight to 90% by weight of an at least partially crystalline copolymer of butene-1 and ethylene, wherein the ethylene content is from about 1 mole percent to about 20 mole percent of said copolymer, and from 10% by weight to 90% by weight of a butene-1 homopolymer; (B) from about 20% by weight to about 60% by weight of a substantially non-polar tackifying resin selected from the group; consisting of polyterpenes and aliphatic resins from C 5 -C 9 hydrocarbon streams or hydrogenated resins thereof with softening points in a range of 70° C. to 130° C. and (C) from about 0.1 phr to about 0.5 phr of an antioxidizing agent.
Claim 3
Dependent Claim
51 words
The hot melt adhesive of claim 1, wherein said blend comprises: from about 45% by weight to about 55% by weight of said butene-1-polymer blend; from about 45% by weight to about 55% by weight of said tackifying resin, from about 0.1 phr to about 0.5 phr of said antioxidizing agent.
Claim 4
Dependent Claim
17 words
The hot melt adhesive of claim 1, further comprising up to 30 phr of a microcrystalline wax.
Claim 5
Dependent Claim
16 words
The hot melt adhesive of claim 1, further comprising up to 30 phr of atactic polypropylene.
Claim 6
Dependent Claim
12 words
The hot melt adhesive of claim 1, further comprising a nucleating agent.
Claim 7
Dependent Claim
26 words
The hot melt adhesive of claim 5, wherein said nucleating agent is a member of the group substituted stearamides, stearamide, high density polyethylene, polypropylene, and para-amino-benzoic-acid.
Claim 8
Dependent Claim
15 words
The hot melt adhesive of claim 1, wherein said antioxidizing agent is tetrakis methylene (3,5-di-tert-butyl-4-hydroxy-hydrocinnamate)methane.
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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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |