US4877827A
Expired / Lapsed
US
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Polymer composition, a process for producing a polymer composition, and the use of such a polymer composition
Assignee: BENNET INTELLECTUAL BV
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Filing: 1988-03-14
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Granted: 1989-10-31
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Expires: 2008-03-14
Abstract
Abstract This invention relates to a polymer composition comprising (a) 30-70 parts by weight of one or more ethylene-propylene-diene rubbers, (b) 30-70 parts by weight of one or more ethylene-vinyl acetate copolymers with a vinyl acetate content of 18-40% by weight, and (c) 1-25 parts by weight of one or more other polymers. The composition can be used with advantage, among other purposes for improving the miscibility of synthetic resins.
Inventors
- 👤 Lambertus A. Van Der Groep
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:34
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L101/00; C08L15/00; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0853; C08L23/10; C08L23/12; C08L23/14; C08L23/16; C08L23/26; C08L23/28; C08L23/283; C08L25/06; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L21/00; C08L2205/00; C08L2205/02; C08L2205/03; C08L2205/035; C08L23/0807; C08L23/0815; C08L2310/00; C08L53/00; C08L53/02; C08L67/00; C08L69/00; C08L77/00; C08L9/00; C08L9/02; C08L91/00; C08L91/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
A polymer composition comprising a chemical reaction product obtained by high shear reacting at a temperature of at least 150° C. a mixture consisting essentially of: (a) 30-70 parts by weight of one or more ethylenepropylene-diene rubbers, (b) 30-70 parts by weight of one or more ethylenevinyl acetate copolymers with a vinyl acetate content of 18-40% by weight, (c) 1 to 25 parts by weight of at least one ethylene-olefin-1 copolymer, the olefin-1 containing 4, 5 or 6 carbon atoms, and (d) optionally, 1-25 parts by weight of at least one other polymer, with the priviso that the sum of (c) and (d), if any, is 1-25 parts by weight.
Claim 2
Dependent Claim
110 words
A polymer composition comprising a chemical reaction product obtained by high shear reacting at a temperature of at least 150° C. a mixture consisting essentially of: (a) 30-70 parts by weight of one or more ethylenepropylene-diene rubbers, (b) 30-70 parts by weight of one or more ethylenevinyl acetate copolymers with a vinyl acetate content of 18-40% by weight, (c) 1 to 25 parts by weight of at least one ethylene-olefin-1 copolymer, the olefin-1 containing 4, 5 or 6 carbon atoms, and (d) optionally, 1-25 parts by weight of at least one other polymer, with the priviso that the sum of (c) and (d), if any, is 1-25 parts by weight.
Claim 3
Dependent Claim
37 words
A polymer composition as claimed in claim 1, characterized by containing as component (d) a styrene butadiene acrylonitrile rubber, a butyl rubber, an isoprene rubber, a polybutadiene rubber, or combinations of two or more of these products.
Claim 4
Dependent Claim
22 words
A polymer composition as claimed in claim 2, characterized by comprising one or more ethylene-olefin-1 copolymers, the olefin-1 containing 4 C atoms.
Claim 5
Dependent Claim
23 words
A polymer composition as claimed in claim 1, produced by reacting the components at a temperature of between 200° C. and 300° C.
Claim 6
Dependent Claim
16 words
A polymer composition as claimed in claim 1, characterized by further comprising one or more waxes.
Claim 7
Dependent Claim
16 words
A polymer composition as claimed in claim 5, characterized by comprising at least one polypropylene wax.
Claim 8
Dependent Claim
21 words
A polymer composition as claimed in claim 6, characterized by comprising at least two polypropylene waxes having different melt flow indices.
Claim 9
Dependent Claim
22 words
A polymer composition as claimed in claim 1, characterized in that component (a) comprises at least one ethylene-propylene-diene rubber having green strength.
Claim 10
Dependent Claim
18 words
A polymer composition as claimed in claim 1, characterized by further comprising a heat stabilizer and/or an antioxidant.
Claim 11
Dependent Claim
82 words
A process for producing a polymer composition as claimed in claim 1 which comprises supplying to the intake zone of an extruder (a) at least one ethylene-propylene-diene rubber and (b) at least one ethylene-vinyl acetate copolymer with a vinyl acetate content of 18-40% by weight; (c) one or more ethylene-olefin-1 copolymer and (d) optionally one or more other polymeric additives; and reacting the same therein, with mixing, at elevated temperature; discharging the reaction product from the extruder, cooling it, and granulating it.
Claim 12
Dependent Claim
24 words
A colour master batch for colouring synthetic resins, characterized by comprising a polymer composition as claimed in claim 1 mixed with a coloring material.
Claim 13
Dependent Claim
30 words
A polymer composition as claimed in claim 1, wherein said ethylene-olefin-1 copolymer is a member selected from the group consisting of an ethylene-butene-1 copolymer, an ethylene-hexene-1 copolymer, and mixtures thereof.
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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) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |