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US3848025A Expired / Lapsed US ⏱️ 0.0 years remaining

Grafted ethylene polymers

Assignee: Bayer AG
•
Filing: 1972-10-10
•
Granted: 1974-11-12
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Expires: 1992-10-10
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Abstract

Abstract 1. A PROCESS FOR THE PRODUCTION OF A GRAFT POLYMER WHICH COMPRISES POLYMERIZING, IN THE PRESENCE OF A RADICAL FORMER IN HOMOGENOUS OR HETEROGENOUS PHASE, A MONOMER MIXTURE OF (A) ACRYLONITRILE, METHACRYLONITRILE OR A MIXTURE THEREOF, (B) AT LEAST ONE MONO-OLEFIN HAVING FROM 2 TO 18 CARBON ATOMS, AND (C) 0 TO 50% BY WEIGHT, BASED ON THE TOTAL MONOMERS, OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID ESTERS HAVING FROM 1 TO 18 CARBON ATOMS IN THE ALCOHOL MOIETY, METHACRYLAMIDE, ACRYLIC ACID AND METHACRYLIC ACID, IN THE PRESENCE OF A HOMOPOLYMER OF ETHYLENE OR A COPOLYMER OF ETHYLENE WITH (I) AN ORGANIC VINYL ESTER ORWITH (II) AN A,B-MONO-OLEFINICALLY UNSATURATED CARBOXYLIC ACID OR A DERIVATIVE THEREOF, SAID ACIDS HAVING 2 TO 4 NON-CARBOXYL CARBON ATOMS.

Inventors

  • 👤 H Alberts
  • 👤 H Bartl

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 14:03
CPC Classifications
C; C08; C08F; C08F263/00; C08F263/02; C08F255/00; C08F255/02

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 132 words
A PROCESS FOR THE PRODUCTION OF A GRAFT POLYMER WHICH COMPRISES POLYMERIZING, IN THE PRESENCE OF A RADICAL FORMER IN HOMOGENOUS OR HETEROGENOUS PHASE, A MONOMER MIXTURE OF (A) ACRYLONITRILE, METHACRYLONITRILE OR A MIXTURE THEREOF, (B) AT LEAST ONE MONO-OLEFIN HAVING FROM 2 TO 18 CARBON ATOMS, AND (C) 0 TO 50% BY WEIGHT, BASED ON THE TOTAL MONOMERS, OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID ESTERS HAVING FROM 1 TO 18 CARBON ATOMS IN THE ALCOHOL MOIETY, METHACRYLAMIDE, ACRYLIC ACID AND METHACRYLIC ACID, IN THE PRESENCE OF A HOMOPOLYMER OF ETHYLENE OR A COPOLYMER OF ETHYLENE WITH (I) AN ORGANIC VINYL ESTER ORWITH (II) AN A,B-MONO-OLEFINICALLY UNSATURATED CARBOXYLIC ACID OR A DERIVATIVE THEREOF, SAID ACIDS HAVING 2 TO 4 NON-CARBOXYL CARBON ATOMS.
Claim 2
Dependent Claim 132 words
A PROCESS FOR THE PRODUCTION OF A GRAFT POLYMER WHICH COMPRISES POLYMERIZING, IN THE PRESENCE OF A RADICAL FORMER IN HOMOGENOUS OR HETEROGENOUS PHASE, A MONOMER MIXTURE OF (A) ACRYLONITRILE, METHACRYLONITRILE OR A MIXTURE THEREOF, (B) AT LEAST ONE MONO-OLEFIN HAVING FROM 2 TO 18 CARBON ATOMS, AND (C) 0 TO 50% BY WEIGHT, BASED ON THE TOTAL MONOMERS, OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID ESTERS HAVING FROM 1 TO 18 CARBON ATOMS IN THE ALCOHOL MOIETY, METHACRYLAMIDE, ACRYLIC ACID AND METHACRYLIC ACID, IN THE PRESENCE OF A HOMOPOLYMER OF ETHYLENE OR A COPOLYMER OF ETHYLENE WITH (I) AN ORGANIC VINYL ESTER ORWITH (II) AN A,B-MONO-OLEFINICALLY UNSATURATED CARBOXYLIC ACID OR A DERIVATIVE THEREOF, SAID ACIDS HAVING 2 TO 4 NON-CARBOXYL CARBON ATOMS.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-11 1978-05-13 1978-11-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-11 1982-05-13 1982-11-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-11 1986-05-13 1986-11-12 $7700.00 Window Closed / Lapsed

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