US4054615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impact ternary blend PVC moulding compositions
Assignee: Bayer AG
•
Filing: 1976-08-31
•
Granted: 1977-10-18
•
Expires: 1996-08-31
Abstract
Abstract Thermoplastic moulding compositions of A. 65 to 95% by weight polyvinyl chloride or vinyl chloride copolymer having K-values of 50 to 80, B. 2 to 25% by weight of a chlorinated polyolefin or of a chlorinated olefin copolymer with a chlorine content of 20 to 80% by weight, C. 3 to 30% by weight of a graft polymer produced by grafting styrene or styrene and acrylonitrile and optionally copolymerizable monomers onto an EPDM rubber as graft base.
Inventors
- 👤 Dietrich Hardt
- 👤 Gert Humme
- 👤 Karl-Heinz Ott
- 👤 Hans-Eberhard Braese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:54
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02; C08F255/06; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L23/00; C08L23/26; C08L23/28; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
113 words
A thermoplastic moulding composition comprising: a. 65 to 95% by weight of polyvinyl chloride or a vinyl chloride copolymer having a K-value of 50 to 80; b. 2 to 25% by weight of a chlorinated polyolefin or of a chlorinated olefin copolymer with a chlorine content of 20 to 80% by weight; and c. 3 to 30% by weight of a graft polymer produced by grafting onto an EPDM rubber as graft base a member selected from the group consisting of styrene, α-methyl styrene, a mixture of styrene and α-methyl styrene, a mixture of styrene and acrylonitrile, a mixture of α-methyl styrene and acrylonitrile, and a mixture of styrene, α-methyl styrene and acrylonitrile.
Claim 2
Dependent Claim
113 words
A thermoplastic moulding composition comprising: a. 65 to 95% by weight of polyvinyl chloride or a vinyl chloride copolymer having a K-value of 50 to 80; b. 2 to 25% by weight of a chlorinated polyolefin or of a chlorinated olefin copolymer with a chlorine content of 20 to 80% by weight; and c. 3 to 30% by weight of a graft polymer produced by grafting onto an EPDM rubber as graft base a member selected from the group consisting of styrene, α-methyl styrene, a mixture of styrene and α-methyl styrene, a mixture of styrene and acrylonitrile, a mixture of α-methyl styrene and acrylonitrile, and a mixture of styrene, α-methyl styrene and acrylonitrile.
Claim 3
Dependent Claim
31 words
A thermoplastic moulding composition according to claim 1, wherein the chlorinated polyolefin or olefin copolymer has been produced by the low pressure method and contains 20 to 60% by weight chlorine.
Claim 4
Dependent Claim
20 words
A thermoplastic moulding composition according to claim 1, wherein the EPDM graft polymer has been produced in an aromatic solvent.
Claim 5
Dependent Claim
31 words
A thermoplastic moulding composition according to claim 1, wherein during the production of the EPDM graft polymer the following conditions were maintained: ##EQU3## 8° C ≦ polymerization temperature ≦ 140° C.
Claim 6
Dependent Claim
33 words
A thermoplastic moulding composition according to claim 1, wherein the EPDM rubber in the graft polymer contains as a diene component a member selected from the group consisting of 5-ethylidene-norbornene-2, dicyclopentadiene and hexadiene-(1,4).
Claim 7
Dependent Claim
29 words
A thermoplastic moulding composition according to claim 1, wherein the chlorinated polyolefin is selected from the group consisting of a chlorinated polyethylene, a chlorinated ethylene-propylene-copolymer, and a chlorinated ethylene-propylene-diene-copolymer.
Claim 8
Dependent Claim
23 words
A thermoplastic moulding composition according to claim 6, wherein the chlorinated polyolefin or chlorinated olefin copolymer contains 25 to 45% by weight chlorine.
Claim 9
Dependent Claim
43 words
A thermoplastic moulding composition according to claim 7, wherein the chlorinated polyolefin is polyethylene produced by the low pressure process with a molecular weight (MG) of between 10,000 and 2,000,000 and subsequently chlorinated to a level of 25 to 45% by weight chlorine.
Claim 10
Dependent Claim
20 words
A thermoplastic moulding composition according to claim 1, wherein the EPDM graft polymer comprises a mixture of styrene and acrylonitrile.
Claim 11
Dependent Claim
93 words
A thermoplastic moulding composition according to claim 1 comprising: a. 65 to 95% by weight of polyvinyl chloride with a K-value of 50 to 80; b. 2 to 25% by weight of a chlorinated polyethylene or of a chlorinated ethylene-propylene-copolymer with a chlorine content of 25 to 45% by weight; and c. 3 to 30% by weight of a solution polymerized graft polymer of styrene and acrylonitrile on an EPDM rubber produced by solution polymerization and having as a diene component a member selected from the group consisting of 5-ethylidene-norbornene-2, dicyclopentadiene and 1,4-hexadiene.
Claim 12
Dependent Claim
128 words
A process for preparing a thermoplastic moulding composition according to claim 1 which comprises solution graft polymerization in an organic solvent a member selected from the group consisting of styrene, α-methyl styrene, a mixture of styrene and α-methyl styrene, a mixture of styrene and acrylonitrile, a mixture of α-methyl styrene and acrylonitrile, and a mixture of styrene, α-methyl styrene and acrylonitrile, onto an EPDM rubber and mixture the resulting graft polymer in a proportion of from 3 to 30% by weight with 65 to 95% by weight of polyvinyl chloride or a vinyl chloride copolymer having a K-value of 50 to 80 and 2 to 25% by weight of a chlorinated polyolefin or of a chlorinated olefin copolymer with a chlorine content of 20 to 80% by weight.
Claim 13
Dependent Claim
24 words
A process according to claim 11, wherein the solvent is an aromatic hydrocarbon having a boiling point bp 760 of 80° to 150° C.
Claim 14
Dependent Claim
25 words
A process according to claim 11, wherein the following conditions are maintained during polymerization ##EQU4## and the temperature is maintained between 80° and 140° C.
Claim 15
Dependent Claim
25 words
A process according to claim 11, wherein the solvent in the production of the EPDM graft polymer is benzene in the ratio amount of: ##EQU5##
Claim 16
Dependent Claim
25 words
A process according to claim 11, wherein the solvent in the production of the EPDM graft polymer is toluene in the ratio amount of: ##EQU6##
Claim 17
Dependent Claim
11 words
A thermoplastic moulding composition prepared by the process of claim 11.
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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |