US4338413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer blends
Assignee: Advanced Elastomer Systems LP
•
Filing: 1980-10-16
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Granted: 1982-07-06
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Expires: 2000-10-16
Abstract
Abstract Thermoplastic blends comprising mixtures of dissimilar plastics and dissimilar rubbers are described; they are improved by incorporation of functionalized olefin polymer.
Inventors
- 👤 Aubert Y. Coran
- 👤 Raman Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:30
CPC Classifications
C; C08; C08L; C08L21/00; C08L77/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
111 words
A thermoplastic composition comprising a blend of about 20 to 98 parts by weight of plastic, and, correspondingly, about 80 to 2 parts by weight of cured particulate rubber wherein the plastic comprises about 10-90 parts by weight of crystalline polyolefin polymer, and, correspondingly, about 90-10 parts by weight of nylon, and the cured rubber comprises about 10-90 parts by weight of hydrocarbon rubber and, correspondingly, about 90-10 parts by weight of polar rubber, and at least 0.5 part by weight of a functionalized olefin polymer per 100 parts by weight of crystalline polyolefin polymer up to an amount where all of the polyolefin polymer is replaced by functionalized olefin polymer.
Claim 2
Dependent Claim
111 words
A thermoplastic composition comprising a blend of about 20 to 98 parts by weight of plastic, and, correspondingly, about 80 to 2 parts by weight of cured particulate rubber wherein the plastic comprises about 10-90 parts by weight of crystalline polyolefin polymer, and, correspondingly, about 90-10 parts by weight of nylon, and the cured rubber comprises about 10-90 parts by weight of hydrocarbon rubber and, correspondingly, about 90-10 parts by weight of polar rubber, and at least 0.5 part by weight of a functionalized olefin polymer per 100 parts by weight of crystalline polyolefin polymer up to an amount where all of the polyolefin polymer is replaced by functionalized olefin polymer.
Claim 3
Dependent Claim
16 words
The composition of claim 1 in which the hydrocarbon rubber is diene rubber or EPDM rubber.
Claim 4
Dependent Claim
22 words
The composition of claim 2 in which the polar rubber is nitrile rubber, ethylene vinyl acetate rubber or acrylic acid-ester copolymer rubber.
Claim 5
Dependent Claim
15 words
The composition of claim 3 in which the crystalline polyolefin polymer is polyethylene or polypropylene.
Claim 6
Dependent Claim
12 words
The composition of claim 4 in which the olefin polymer is polypropylene.
Claim 7
Dependent Claim
13 words
The composition of claim 6 in which the polar rubber is nitrile rubber.
Claim 8
Dependent Claim
30 words
The composition of claim 6 in which the functionalized olefin polymer contains at least one radical selected from the group consisting of epoxy, carboxy, amino, amido, or methylol phenolic radicals.
Claim 9
Dependent Claim
36 words
The composition of claim 7 in which the functionalized olefin polymer is carboxylated polypropylene in an amount of about 0.5 to 20 parts by weight per 100 parts by weight of polyolefin polymer and nylon combined.
Claim 10
Dependent Claim
21 words
The composition of claim 8 in which the crystalline polyolefin polymer is crystalline polypropylene and the hydrocarbon rubber is EPDM rubber.
Claim 11
Dependent Claim
16 words
The composition of claim 9 in which the nylon melts at about 230° C. or below.
Claim 12
Dependent Claim
19 words
The composition of claim 10 in which the nylon is Nylon 6, Nylon 6/66 copolymer or Nylon 6/66/610 terpolymer.
Claim 13
Dependent Claim
57 words
The composition of claim 11 in which the cured rubber comprises about 20 to 80 parts by weight of EPDM rubber, and correspondingly, about 80 to 20 parts by weight of nitrile rubber, wherein both the EPDM rubber and nitrile rubber are in the form of discrete dispersed particles no larger than about 50 microns number average.
Claim 14
Dependent Claim
18 words
The composition of claim 12 in which the rubber particle size is about 0.2 to about 10 microns.
Claim 15
Dependent Claim
15 words
The composition of claim 1 in which the polar rubber is acrylic acid-ester copolymer rubber.
Claim 16
Dependent Claim
32 words
The composition of claim 14 comprising about 25 to about 65 parts by weight of plastic, and, correspondingly, about 75 to 35 parts by weight of cured rubber which composition is elastomeric.
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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) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |