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Polyphenylene ether compositions

Assignee: General Electric Co
•
Filing: 1971-12-03
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Granted: 1974-01-22
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Expires: 1991-12-03
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Abstract

Abstract THERE ARE PROVIDED HIGH IMPACT STRENGTH THERMOPLASTIC COMPOSITIONS COMPRISING IN COMBINATION (A) A POLYPHENYLENE ETHER RESIN, (B) A POLYSTYRENE RESIN AND (C) AN INTERPOLYMER OF 30 TO 70 PARTS BY WEIGHT OF A DIENE RUBBER WITH 70 TO 30 PARTS BY WEIGHT OF (I) A VINYL AROMATIC COMPOUND OR (II) A MIXTURE OF A VINYL AROMATIC COMPOUND AND AN ACRYLIC ESTER, THE COMPOSITIONS HAVING A DISPERSED ELASTOMERIC PHASE WITH AT LEAST 85% OF THE NUMBER OF PARTICLES BEING ABOUT 0.5 MICRON OR LESS IN SIZE AND LESS THAN 15% OF THE NUMBER OF PARTICLES BEING GREATER THAN ABOUT 0.5 MICRON IN SIZE. THE COMPOSITIONS PROVIDE MOLDED ARTICLES WITH SUBSTANTIAL AND UNEXPECTED IMPROVEMENTS IN IMPACT RESISTANCE-ESPECIALLY AT LOW TEMPERATURES-AND ENHANCED SURFACE APPEARANCE.

Inventors

  • 👤 D Carmelite
  • 👤 M Kramer
  • 👤 G Lee

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 20:39
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08L; C08L25/00; C08L51/00; C08L51/04; C08L71/00; C08L71/08; C08L71/10; C08L71/12; Y; Y10; Y10S; Y10S525/00; Y10S525/905

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) 1977-01-21 1977-07-23 1978-01-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-21 1981-07-23 1982-01-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-21 1985-07-23 1986-01-22 $7700.00 Window Closed / Lapsed

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