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US4957965A Expired / Lapsed US ⏱️ 0.0 years remaining

Thermoplastic molding materials

Assignee: BASF SE
•
Filing: 1988-08-05
•
Granted: 1990-09-18
•
Expires: 2008-08-05
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Abstract

Abstract Thermoplastic molding materials contain, as essential components, (A) 5-95% by weight of a polyamide; (B) 5-95% by weight of a modified polyphenylene ether, prepared from (b 1 ) 4.95-99.9% by weight of a polyphenylene ether, (b 2 ) 0-90% by weight of a vinylaromatic polymer, (b 3 ) 0.05-10% by weight of one or more compounds from the group consisting of (b 31 ) an α,β-unsaturated dicarbonyl compound, (b 32 ) a monomer containing amide groups and a polymerizable double bond and (b 33 ) a monomer containing lactam groups and a polymerizable double bond, (b 4 ) 0-80% by weight of further graft-active monomers and (b 5 ) 0.01-0.09% by weight of a free radical initiator, (C) 0-90% by weight of an unmodified polyphenylene ether, (D) 0-45% by weight of a vinylaromatic polymer and (E) 0-40% by weight of a rubber impact modifier.

Inventors

  • 👤 Christof Taubitz
  • 👤 Klaus Muehlbach
  • 👤 Hermann Brandt
  • 👤 Klaus Boehlke

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 09:00
CPC Classifications
C; C08; C08L; C08L77/00; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; Y; Y10; Y10S; Y10S525/00; Y10S525/905

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 85 words
A thermoplastic molding material containing, as essential components, (A) 5-95% by weight of a polyamide, (B) 5-95% by weight of a modified polyphenylene ether, prepared from (b 1 ) 4.95-99.9% by weight of a polyphenylene ether, (b 2 ) 90% or less by weight of a vinylaromatic polymer, (b 3 ) 0.05 -10% by weight of (b 31 ) an α,β-unsaturated dicarbonyl compound, (b 4 ) 0-80; by weight of further graft-active monomers and (b 5 ) 0.01-0.09% by weight of a free radical initiator.
Claim 2
Dependent Claim 85 words
A thermoplastic molding material containing, as essential components, (A) 5-95% by weight of a polyamide, (B) 5-95% by weight of a modified polyphenylene ether, prepared from (b 1 ) 4.95-99.9% by weight of a polyphenylene ether, (b 2 ) 90% or less by weight of a vinylaromatic polymer, (b 3 ) 0.05 -10% by weight of (b 31 ) an α,β-unsaturated dicarbonyl compound, (b 4 ) 0-80; by weight of further graft-active monomers and (b 5 ) 0.01-0.09% by weight of a free radical initiator.
Claim 3
Dependent Claim 82 words
A thermoplastic molding material as defined in claim 1, which contains (A) 5-95% by weight of a polyamide, (B) 5-95% by weight of a modified polyphenylene ether, prepared from (b 1 ) 4.95-99.9% by weight of a polyphenylene ether, (b 2 ) 90% or less by weight of a vinylaromatic polymer, (b 3 ) 0.05-10% by weight of fumaric acid, (b 4 ) 0-80% by weight of further graft-active monomers and (b 5 ) 0.02-0.08% by weight of a free radical initiator.
Claim 4
Dependent Claim 30 words
A thermoplastic molding material as defined in claim 1, wherein the free radicaI initiator (b 5 ) is selected from the group consisting of organic hydroperoxides or highly branched alkanes.
Claim 5
Dependent Claim 29 words
A thermoplastic molding material as defined in claim 1, wherein the polyamide A) consists of not less than 80% by weight of repeating units of the formula V ##STR14##

References Cited (Backward Citations)

US3379792A Cited
GB2054623A Cited
EP0024120B1 Cited
EP0046040A1 Cited
JPS5966452A Cited
WO1987000540A1 Cited
US4654405A Cited
EP0226910A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-09-17 1994-03-19 1994-09-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-09-17 1998-03-19 1998-09-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-09-17 2002-03-19 2002-09-18 $7700.00 Window Closed / Lapsed

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