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US3580878A Expired / Lapsed US ⏱️ 0.0 years remaining

Flame-resistant acrylonitrile copolymers with high receptivity to acid dyes

Assignee: Japan Exlan Co Ltd
•
Filing: 1968-06-13
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Granted: 1971-05-25
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Expires: 1988-06-13
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Abstract

Abstract ACRYLONITRILE COPOLYMERS WHICH HAVE HIGH RECEPTIVITY TO ACID DYES AND ARE FLAME RESISTANT, AND ARE THUS USEFUL IN MAKING CARPETING, CURTAINS, ETC. AS WELL AS WEARING APPEREL, ETC., ARE TERNARY POLYMERS COMPOSED OF ACRYLONITRILE, VINYLIDENE CHLORIDE, AND A BASIC MONOMER OF THE TYPE OF THE DIMETHYLAMINOETHYL AND DIETHYLAMINOETHYL ESTERS OF ACRYLIC ACID AND OF METHACRYLIC ACID, AND THE CORRESPONDING N-SUBSTITUTED AMINOPROPL AND AMINOBUTYL ESTERS, ETC.; OR COPOLYMERS CONSISTING OF ACRYLONITRILE, VINYLIDENE CHLORIDE, A BASIC MONOMER OF THE AFORE-INDICATED TYPE AND ONE OR MORE NEUTRAL ETHYLENCIALLY UNSATURATED COMPOUNDS (I.E. METHYL ACRYLATE, METHYL METHACRYLATE, VINYL ACETAT, STYRENE).

Inventors

  • 👤 Iyohiko Nakanome
  • 👤 Kenji Takeya
  • 👤 Hiroshi Suzuki
  • 👤 Yasuhiro Kitagawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 11:40
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F220/00; C08F220/02; C08F220/42; C08F220/44

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) 1974-05-24 1974-11-23 1975-05-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-24 1978-11-23 1979-05-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-24 1982-11-23 1983-05-25 $7700.00 Window Closed / Lapsed

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