US5157076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic elastomers with improved abrasion resistance
Assignee: Geon Co
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Filing: 1991-06-17
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Granted: 1992-10-20
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Expires: 2011-06-17
Abstract
Abstract In a preferred embodiment, the invention herein relates to blends of a PVC-containing thermoplastic material and an impact modifier which blends have improved abrasion resistance and a reduced adhesion to glass, said impact modifier has Shore A hardness greater than 70 and is used in an amount of greater than 50 weight parts per 100 weight parts of said thermoplastic material.
Inventors
- 👤 William S. Greenlee
- 👤 Josef C. Vyvoda
- 👤 Roman W. Wypart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:37
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L57/00; C08L57/06; C08L57/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
105 words
A composition having improved abrasion resistance comprising a thermoplastic material and greater than 20 weight parts of an impact modifier per 100 weight parts of said thermoplastic material, said impact modifier has Shore A hardness greater than 40, said impact modifier contains 5-40% by weight polymerized acrylonitrile; said abrasion resistance of said composition devoid of a filler is 0.1433 or less, as measured by the Tabor Abrasion Test using a H-18 wheel; and said thermoplastic material is selected from the group consisting of polyvinyl chloride homopolymers, vinyl chloride polymerized with up to 70 weight percent of at least one copolymerizable comonomer, polyvinyl chloride-poly(ethylene-vinyl acetate) grafts.
Claim 2
Dependent Claim
105 words
A composition having improved abrasion resistance comprising a thermoplastic material and greater than 20 weight parts of an impact modifier per 100 weight parts of said thermoplastic material, said impact modifier has Shore A hardness greater than 40, said impact modifier contains 5-40% by weight polymerized acrylonitrile; said abrasion resistance of said composition devoid of a filler is 0.1433 or less, as measured by the Tabor Abrasion Test using a H-18 wheel; and said thermoplastic material is selected from the group consisting of polyvinyl chloride homopolymers, vinyl chloride polymerized with up to 70 weight percent of at least one copolymerizable comonomer, polyvinyl chloride-poly(ethylene-vinyl acetate) grafts.
Claim 3
Dependent Claim
27 words
Composition of claim 1 wherein amount of said impact modifier is greater than 30 weight parts and said impact modifier has Shore A hardness greater than 60.
Claim 4
Dependent Claim
25 words
Composition of claim 2 wherein amount of said impact modifier is greater than 50 weight parts and its Shore A hardness is greater than 70.
Claim 5
Dependent Claim
54 words
Composition of claim 3 wherein said impact modifier contains a polymer selected from acrylonitrile-butadiene-styrene copolymers and blends thereof, acrylonitrile-styrene-acrylate copolymers and blends thereof, acrylonitrile-chlorinated polyethylene-styrene copolymers and blends thereof, styrene-acrylonitrile copolymers, olefin modified styrene-acrylonitrile copolymers, styrene-acrylonitrile-EPDM or EPR copolymers, and mixtures thereof, where EPDM stands for ethylene-propylene-diene monomer and EPR stands for ethylene-propylene rubber.
Claim 6
Dependent Claim
76 words
A composition having improved abrasion resistance comprising vinyl chloride polymer and an impact modifier containing 5-40% by weight polymerized acrylonitrile; amount of said impact modifier is greater than 20 weight parts per 100 weight parts of said vinyl chloride polymer; said impact modifier has Shore A hardness greater than 60; and said abrasion resistance of said composition devoid of a filler is 0.1433 or less as measured by the Tabor Abrasion Test using an H-18 wheel.
Claim 7
Dependent Claim
76 words
A composition having improved abrasion resistance comprising vinyl chloride polymer and an impact modifier containing 5-40% by weight polymerized acrylonitrile; amount of said impact modifier is greater than 20 weight parts per 100 weight parts of said vinyl chloride polymer; said impact modifier has Shore A hardness greater than 60; and said abrasion resistance of said composition devoid of a filler is 0.1433 or less as measured by the Tabor Abrasion Test using an H-18 wheel.
Claim 8
Dependent Claim
70 words
Composition of claim 5 containing from 0 to about 30 parts of plasticizer per 100 weight parts of said vinyl chloride polymer and said impact modifier is selected form acrylonitrile-butadiene-styrene copolymers and blends thereof, acrylonitrile-styrene-acrylate copolymers and blends thereof, acrylonitrile-chlorinated polyethylene-styrene copolymers and blends thereof, styrene-acrylonitrile copolymers, olefin modified styrene-acrylonitrile copolymers, styrene-acrylonitrile-EPDM or EPR copolymers, and mixtures thereof, where EPDM stand for ethylene-propylene-diene monomer and EPR stands for ethylene-propylene rubber.
Claim 9
Dependent Claim
35 words
Composition of claim 6 wherein said vinyl chloride polymer is selected from vinyl chloride homopolymers and copolymers wherein said copolymers are of vinyl chloride monomer and 30-60% by weight of at least one copolymerizable comonomer.
Claim 10
Dependent Claim
74 words
A composition having improved abrasion resistance comprising vinyl chloride polymer and an impact modifier comprising polymerized acrylonitrile and polymerized styrene; amount of said impact modifier is greater than 20 weight parts per 100 weight parts of said vinyl chloride polymer; said impact modifier has Shore A hardness greater than 60; and abrasion resistance, of said composition devoid of filler is 0.1433 or less, as measure by the Tabor Abrasion Test using an H-18 wheel.
Claim 11
Dependent Claim
74 words
A composition having improved abrasion resistance comprising vinyl chloride polymer and an impact modifier comprising polymerized acrylonitrile and polymerized styrene; amount of said impact modifier is greater than 20 weight parts per 100 weight parts of said vinyl chloride polymer; said impact modifier has Shore A hardness greater than 60; and abrasion resistance, of said composition devoid of filler is 0.1433 or less, as measure by the Tabor Abrasion Test using an H-18 wheel.
Claim 12
Dependent Claim
14 words
Composition of claim 8 wherein said impact modifier is acrylonitrile-styrene copolymer overpolymerized over rubber.
Claim 13
Dependent Claim
40 words
Composition of claim 7 wherein said vinyl chloride polymer is copolymer of vinyl chloride monomer and at least one comonomer selected from 2-ethylhexyl acrylate, butyl acrylate, ethyl acrylate, isobutylene, propylene, ethylene, methyl acrylate, lauryl methacrylate, ethoxyethyl acrylate, and mixtures thereof.
Claim 14
Dependent Claim
14 words
Composition of claim 10 wherein amount of said comonomer(s) is about 30-60% by weight.
Claim 15
Dependent Claim
11 words
Composition of claim 8 which contains less than 10 parts plasticizer.
Claim 16
Dependent Claim
35 words
Composition of claim 8 wherein said vinyl chloride polymer is selected from vinyl chloride homopolymers and copolymers wherein said copolymers are of vinyl chloride monomer and 30-60% by weight of at least one copolymerizable comonomer.
Claim 17
Dependent Claim
28 words
Composition of claim 8 wherein vinyl chloride polymer is copolymer of vinyl chloride monomer and about 30-60% by weight 2-ethylhexyl acrylate and said impact modifier is acrylonitrile-butadiene-styrene copolymer.
Claim 18
Dependent Claim
27 words
Composition of claim 8 wherein vinyl chloride polymer is copolymer of vinyl chloride and at least one comonomer selected from 2-ethylhexyl acrylate, butyl acrylate, and mixtures thereof.
Claim 19
Dependent Claim
81 words
A composition having improved abrasion resistance consisting essentially of vinyl chloride polymer and greater than 20 weight parts impact modifier per 100 weight parts of said vinyl chloride polymer; abrasion of said composition devoid of filler is 0.1433 or less, as measured by the Tabor Abrasion Test using an H-18 wheel; said vinyl chloride polymer is selected from vinyl chloride homopolymers and vinyl chloride copolymers copolymerized with at lest on comonomer; and said impact modifier comprises polymerized acrylonitrile and polymerized styrene.
Claim 20
Dependent Claim
81 words
A composition having improved abrasion resistance consisting essentially of vinyl chloride polymer and greater than 20 weight parts impact modifier per 100 weight parts of said vinyl chloride polymer; abrasion of said composition devoid of filler is 0.1433 or less, as measured by the Tabor Abrasion Test using an H-18 wheel; said vinyl chloride polymer is selected from vinyl chloride homopolymers and vinyl chloride copolymers copolymerized with at lest on comonomer; and said impact modifier comprises polymerized acrylonitrile and polymerized styrene.
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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) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |