US3901954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymers
Assignee: Bayer AG
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Filing: 1973-03-26
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Granted: 1975-08-26
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Expires: 1993-03-26
Abstract
Abstract Graft polymers are obtained by graft polymerization of 8 to 90% by weight of a mixture consisting of 10 to 70% by weight of (meth)acrylonitrile, 20 to 60% by weight of at least one aromatic vinyl compound, 5 to 60% by weight of at least one monoolefin and optionally further monomers on 92 to 10% by weight of polyethylene in the presence of a polymerization catalyst in homogeneous or heterogeneous phase at temperatures of from -20*C to 250*C and under pressure of up to 500 atm.
Inventors
- 👤 Heinrich Alberts
- 👤 Herbert Bartl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
A PROCESS FOR THE PRODUCTION OF A GRAFT POLYMER FROM A HOMOPOLYER OF ETHYLENE AND OLEFINICALLY UNSATURATED MONOMERS IN THE PRESENCE OF A RADICAL FORMER INORGANIC OR AQUEOUS MEDIUM, WHEREIN A MIXTURE OF ACRYLONITRILE, METHACRYLONITRILE OR A MIXTURE THEREOF, AT LEAST ONE AROMATIC MONOVINYL COMPOUND, AT LEAST ONE MONOOLEFIN CONTAINING 2 TO 18 CARBON ATOMS, 0-30% BY WEIGHT OF ANOTHER VINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID ESTERS AND METHACRYLIC ACID ESTERS WITH 1 TO 8 CARBON ATOMS IN THE ALCOHOL COMPONENT, ACRYLAMIDE, METHACRYLAMIDE, ACRYLIC, METHACRYLIC ACID, VINYL ESTERS OF ORGANIC SATURATED MONOCARBOXYLIC ACIDS CONTAINING 2 TO 18 CARBON ATOMS AND MIXTURES THEREOF AND 0-15% BY WEIGHT OF AN ALLYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALLYL ALCOHOL, ALLYL ACETATE, ISOBUTENE DIACC ETATE AND MIXTURES THEREOF IS POLYMERIZED IN THE PRESENCE OF SAID ETHYLENE HOMOPOLYMER.
Claim 2
Dependent Claim
139 words
A PROCESS FOR THE PRODUCTION OF A GRAFT POLYMER FROM A HOMOPOLYER OF ETHYLENE AND OLEFINICALLY UNSATURATED MONOMERS IN THE PRESENCE OF A RADICAL FORMER INORGANIC OR AQUEOUS MEDIUM, WHEREIN A MIXTURE OF ACRYLONITRILE, METHACRYLONITRILE OR A MIXTURE THEREOF, AT LEAST ONE AROMATIC MONOVINYL COMPOUND, AT LEAST ONE MONOOLEFIN CONTAINING 2 TO 18 CARBON ATOMS, 0-30% BY WEIGHT OF ANOTHER VINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID ESTERS AND METHACRYLIC ACID ESTERS WITH 1 TO 8 CARBON ATOMS IN THE ALCOHOL COMPONENT, ACRYLAMIDE, METHACRYLAMIDE, ACRYLIC, METHACRYLIC ACID, VINYL ESTERS OF ORGANIC SATURATED MONOCARBOXYLIC ACIDS CONTAINING 2 TO 18 CARBON ATOMS AND MIXTURES THEREOF AND 0-15% BY WEIGHT OF AN ALLYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALLYL ALCOHOL, ALLYL ACETATE, ISOBUTENE DIACC ETATE AND MIXTURES THEREOF IS POLYMERIZED IN THE PRESENCE OF SAID ETHYLENE HOMOPOLYMER.
Claim 3
Dependent Claim
18 words
The process as claimed in claim 1, wherein said monoolefin is propylene, 1-butene, isobutylene or a mixture thereof.
Claim 4
Dependent Claim
36 words
The process as claimed in claim 1, wherein said aromatic monovinyl compound is styrene, nuclear-substituted alkyl styrene with 1 to 5 carbon atoms in the alkyl radical, Alpha -methyl styrene, halogenated styrene or a mixture thereof.
Claim 5
Dependent Claim
27 words
The process as claimed in claim 1 wherein 8 to 90% by weight of monomer mixture and 92 to 10% by weight of ethylene homopolymer are used.
Claim 6
Dependent Claim
86 words
The process as claimed in claim 1, wherein the monomer mixture to be grafted on consists of a mixture of I. 10 to 70% by weight of acrylonitrile, methacrylonitrile or a mixture thereof, II. 20 to 60% by weight of at least one aromatic monovinyl compound, III. 5 to 60% by weight of at least one monoolefin having from 2 to 18 carbon atoms, IV. 0 to 30% by weight of said another vinyl compound, and V. 0 to 15% by weight of said allyl compound.
Claim 7
Dependent Claim
111 words
A polymer consisting essentially of an ethylene homopolymer having grafted thereon a mixture of acrylonitrile, methacrylonitrile or a mixture thereof, at least one aromatic monovinyl compound, at least one monoolefin containing 2 to 18 carbon atoms, 0-30% by weight of another vinyl compound selected from the group consisting of acrylic acid esters and methacrylic acid esters with 1 to 8 carbon atoms in the alcohol component, acrylamide, methacrylamide, acrylic acid, methacrylic acid, vinyl esters of organic saturated monocarboxylic acids containing 2 to 18 carbon atoms and mixtures thereof and 0-15% by weight of an allyl compound selected from the group consisting of allyl alcohol, allyl acetate, isobutene diacetate and mixtures thereof.
Claim 8
Dependent Claim
111 words
A polymer consisting essentially of an ethylene homopolymer having grafted thereon a mixture of acrylonitrile, methacrylonitrile or a mixture thereof, at least one aromatic monovinyl compound, at least one monoolefin containing 2 to 18 carbon atoms, 0-30% by weight of another vinyl compound selected from the group consisting of acrylic acid esters and methacrylic acid esters with 1 to 8 carbon atoms in the alcohol component, acrylamide, methacrylamide, acrylic acid, methacrylic acid, vinyl esters of organic saturated monocarboxylic acids containing 2 to 18 carbon atoms and mixtures thereof and 0-15% by weight of an allyl compound selected from the group consisting of allyl alcohol, allyl acetate, isobutene diacetate and mixtures thereof.
Claim 9
Dependent Claim
151 words
A polymer consisting essentially of A. 14 to 95% by weight of ethylene homopolymer having grafted thereon B. 86 to 5% by weight of a mixture of I. 20 to 45% by weight of acrylonitrile, methacrylonitrile or a mixture thereof, II. 45 to 79.9% by weight of at least one aromatic monovinyl compound, III. 0.1 to 10% by weight of at least one monoolefin having from 2 to 18 carbon atoms, IV. 0 to 20% by weight of a member selected from the group consisting of acrylic acid esters and methacrylic acid esters with 1 to 8 carbon atoms in the alcohol component, acrylamide, methacrylamide, acrylic acid, methacrylic acid, vinyl esters of organic saturated monocarboxylic acids containing 2 to 18 carbon atoms and mixtures thereof and V. 0 to 10% by weight of an allyl compound selected from the group consisting of allyl alcohol, allyl acetate, isobutene diacetate and mixtures thereof.
Claim 10
Dependent Claim
151 words
A polymer consisting essentially of A. 14 to 95% by weight of ethylene homopolymer having grafted thereon B. 86 to 5% by weight of a mixture of I. 20 to 45% by weight of acrylonitrile, methacrylonitrile or a mixture thereof, II. 45 to 79.9% by weight of at least one aromatic monovinyl compound, III. 0.1 to 10% by weight of at least one monoolefin having from 2 to 18 carbon atoms, IV. 0 to 20% by weight of a member selected from the group consisting of acrylic acid esters and methacrylic acid esters with 1 to 8 carbon atoms in the alcohol component, acrylamide, methacrylamide, acrylic acid, methacrylic acid, vinyl esters of organic saturated monocarboxylic acids containing 2 to 18 carbon atoms and mixtures thereof and V. 0 to 10% by weight of an allyl compound selected from the group consisting of allyl alcohol, allyl acetate, isobutene diacetate and mixtures thereof.
References Cited (Backward Citations)
US3444108A
Cited
US3773699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |