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US4812507A Expired / Lapsed US ⏱️ 0.0 years remaining

Reinforced resinous composition comprising polycyano arylene ether

Assignee: Idemitsu Kosan Co Ltd
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Filing: 1987-11-09
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Granted: 1989-03-14
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Expires: 2007-11-09
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Abstract

Abstract Disclosed is a novel polymer of this invention which comprises having a recurring unit represented by the formula: <IMAGE> (I) and having a reduced viscosity ( eta sp/c) of 0.2 dl/g or more at 60 DEG C. in a solution of a concentration of 0.2 g/dl in p-chlorophenol as a solvent, a method for preparing the same which comprises reacting a dihalogenobenzonitrile represented by the formula: <IMAGE> (II) wherein X represents a halogen atom, with an alkali metal salt of resorcin represented by the formula: <IMAGE> (III) wherein M represents an alkali metal, in the presence of a solvent; and then treating the reaction product obtained by water or alcohol. and molding materials and molded products employing the polycyanoaryl ether.

Inventors

  • 👤 Shigeru Matsuo
  • 👤 Tomoyoshi Murakami
  • 👤 Thoru Bando
  • 👤 Kikuo Nagatoshi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 15:26
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4006; C08L; C08L71/00; C08G2650/00; C08G2650/62; C08G2650/64

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 66 words
A reinforced resinous composition comprising 40 to 95% by weight of a polycyanoaryl ether containing a recurring unit represented by the formula: ##STR10## and having a reduced viscosity (ηsp/c) of 0.3 dl/g or more at 60° C. in a solution of a concentration of 0.2 g/dl in p-chlorophenol as a solvent, as a main component, and 5 to 60% by weight of a fibrous reinforcing material.
Claim 2
Dependent Claim 66 words
A reinforced resinous composition comprising 40 to 95% by weight of a polycyanoaryl ether containing a recurring unit represented by the formula: ##STR10## and having a reduced viscosity (ηsp/c) of 0.3 dl/g or more at 60° C. in a solution of a concentration of 0.2 g/dl in p-chlorophenol as a solvent, as a main component, and 5 to 60% by weight of a fibrous reinforcing material.
Claim 3
Dependent Claim 33 words
The reinforced resinous composition according to claim 1, wherein the fibrous reinforcing material is at least one selected from the group consisting of carbon fibers, glass fibers, alumina fibers and aromatic polyamide fibers.

References Cited (Backward Citations)

US4567248A Cited
US4663427A Cited
US4640975A Cited
US4640974A Cited
US4703104A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-03-13 1992-09-12 1993-03-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-03-13 1996-09-12 1997-03-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-03-13 2000-09-12 2001-03-14 $7700.00 Window Closed / Lapsed

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