US5281670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin compositions
Assignee: Shell USA Inc
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Filing: 1992-10-30
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Granted: 1994-01-25
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Expires: 2012-10-30
Abstract
Abstract It is herein provided a polymer blend comprising of polybutylene and a functionalized polyolefin such as maleated polypropylene. The blend has and exhibits an unexpectedly high degree of adhesion to polar polymers and metal surfaces, and enhances the use of polybutylene in applications for which adhesion to polar surfaces is required.
Inventors
- 👤 Robert W. Lee
- 👤 Meredith S. Ott
- 👤 Cesar O. Castro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:44
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
17 words
A blend comprising polybutylene and functionalized polyolefins having and exhibiting improved adhesion to metals and polar polymers.
Claim 2
Dependent Claim
17 words
A blend comprising polybutylene and functionalized polyolefins having and exhibiting improved adhesion to metals and polar polymers.
Claim 3
Dependent Claim
17 words
A blend comprising polybutylene and functionalized polypropylene having and exhibiting improved adhesion to metals and polar polymers.
Claim 4
Dependent Claim
17 words
A blend comprising polybutylene and functionalized polypropylene having and exhibiting improved adhesion to metals and polar polymers.
Claim 5
Dependent Claim
13 words
A blend as in claim 2 wherein said functionalized polypropylene is maleated polypropylene.
Claim 6
Dependent Claim
21 words
A blend as in claim 1 wherein said functionalized polyolefin is present in an amount of from about 1-70 wt %.
Claim 7
Dependent Claim
21 words
A blend as in claim 2 wherein said maleated polypropylene is present in an amount of from about 5-50 wt %.
Claim 8
Dependent Claim
20 words
A blend as in claim 1 wherein said metal is a member of the group consisting of steel and aluminum.
Claim 9
Dependent Claim
22 words
A blend as in claim 1 wherein said polar polymer is a member of the group consisting of nylon, PET, and polycarbonates.
Claim 10
Dependent Claim
10 words
An article of manufacture comprising the blend of claim 1.
Claim 11
Dependent Claim
20 words
An article of manufacture as in claim 8 wherein the blend has been applied by the method of extrusion coating.
Claim 12
Dependent Claim
19 words
An article of manufacture as in claim 8 wherein the blend has been applied by the method of lamination.
Claim 13
Dependent Claim
21 words
An article of manufacture as in claim 8 wherein the blend has been applied by the method of flame spray coating.
Claim 14
Dependent Claim
22 words
An article of manufacture as in claim 8 wherein the blend has been applied by the method of fluidized bed powder coating.
Claim 15
Dependent Claim
21 words
An article of manufacture as in claim 8 wherein the blend has been applied by the method of insert injection molding.
Claim 16
Dependent Claim
20 words
An article of manufacture as in claim 8 wherein the blend has been applied by the method of rotation molding.
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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |