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US3557253A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of producing vinyl chloride resins

Assignee: Japanese Geon Co Ltd
•
Filing: 1967-10-10
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Granted: 1971-01-19
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Expires: 1987-10-10
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Abstract

Abstract A METHOD OF PRODUCING VINYL CHLORIDE RESINS WHICH COMPRISES GRAFT POLYMERIZING TO A MIXTURE OF (1) AT LEAST ONE ELASTOMER SELECTED FROM THE GROUP CONSISTING OF THE ETHYLENE-VINYL ESTER COPOLYMERS, THE ETHYLENE-ACRYLIC ACID ESTER COPOLYMERS AND THE ETHYLENE-VINYL ESTER ACRYLIC ACID ESTER TERNARY COPOLYMERS, AND (2) AT LEAST ONE ELASTOMER SELECTED FROM THE GROUP CONSISTING OF THE ETHYLENE-PROPYLENE COPOLYMERS, THE ETHYLENE-PROPYLENE-NONCONJUGATED DIOLEFIN TERNARY COPOLYMERS, BUTYL RUBBER AND CHLORINATED BUTYL RUBBER, VINYL CHLORIDE OR A MONOMERIC MIXTURE OF VINYL CHLORIDE WITH A SMALL AMOUNT OF ONE OR MORE CO-MONOMERS, SAID FIRST AND SECOND-NAMED ELASTOMERS AND SAID MONOMER BEING USED IN THE AMOUNTS, ON A WEIGHT BASIS OF 1 TO 15%, 2 TO 15% AND 97 TO 70%, RESPECTIVELY.

Inventors

  • 👤 Katsumi Sugimoto
  • 👤 Yoshio Kondo
  • 👤 Sachio Fukui

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 08:28
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/02

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-01-18 1974-07-20 1975-01-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-01-18 1978-07-20 1979-01-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-01-18 1982-07-20 1983-01-19 $7700.00 Window Closed / Lapsed

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