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US5071924A Expired / Lapsed US ⏱️ 0.0 years remaining

Thermoplastic molding materials based on polyamide blends

Assignee: BASF SE
•
Filing: 1989-07-07
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Granted: 1991-12-10
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Expires: 2009-07-07
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Abstract

Abstract Thermoplastic molding materials contain, as essential components, A) 20-98% by weight of a partly aromatic amide copolymer essentially consisting of a1) 40-90% by weight of units derived from terephthalic acid and hexamethylenediamine, a2) 0-50% by weight of units derived from epsilon -caprolactam and a3) 0-60% by weight of units derived from adipic acid and hexamethylenediamine, components a2) and/or a3) accounting altogether for not less than 10% by weight of the total number of units, B) 2-80% by weight of a partly crystalline thermoplastic polyamide which differs from A) and furthermore C) 0-50% by weight of an elastomeric impact modifier and D) 0-60% by weight of fibrous or particulate fillers or a mixture of these.

Inventors

  • 👤 Eckhard M. Koch
  • 👤 Gerhard Heinz
  • 👤 Walter Goetz
  • 👤 Gunter Pipper

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 13:41
CPC Classifications
C; C08; C08L; C08L77/00

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 87 words
A thermoplastic molding material containing, as essential components, A) 20-98% by weight of a partly aromatic amide copolymer essentially consisting of a 1 ) 60-75% by weight of units derived from terephthalic acid and hexamethylenediamine, and a 2 ) 25-40% by weight of units derived from ε-caprolactam, B) 2-80% by weight of a partly crystalline thermoplastic polyamide which differs from A) and furthermore C) 0-50% by weight of an elastomeric impact modifier and D) 0-50% by weight of fibrous or particulate fillers or a mixture of these.
Claim 2
Dependent Claim 87 words
A thermoplastic molding material containing, as essential components, A) 20-98% by weight of a partly aromatic amide copolymer essentially consisting of a 1 ) 60-75% by weight of units derived from terephthalic acid and hexamethylenediamine, and a 2 ) 25-40% by weight of units derived from ε-caprolactam, B) 2-80% by weight of a partly crystalline thermoplastic polyamide which differs from A) and furthermore C) 0-50% by weight of an elastomeric impact modifier and D) 0-50% by weight of fibrous or particulate fillers or a mixture of these.
Claim 3
Dependent Claim 26 words
A thermoplastic molding material as claimed in claim 1, wherein the partly aromatic amide copolymer A) has a triamine content of less than 0.5% by weight.
Claim 4
Dependent Claim 22 words
A thermoplastic molding material as claimed in claim 1, wherein the polyamide B) is poly-ε-caprolactam, polytetramethyleneadipamide or polyhexamethyleneadipamide or a mixture thereof.
Claim 5
Dependent Claim 17 words
A molding obtained from a thermoplastic molding material as claimed in claim 1 as an essential component.
Claim 6
Dependent Claim 28 words
A thermoplastic molding material as claimed in claim 1, wherein the partly aromatic amide copolymer A) has a melting point of from 260° C. to above 300° C.

References Cited (Backward Citations)

US3963799A Cited
US4173556A Cited
US4197379A Cited
EP0034704A1 Cited
US4486507A Cited
EP0124451A1 Cited
JPS6245652A Cited
JPS62127346A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-12-09 1995-06-10 1995-12-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-12-09 1999-06-10 1999-12-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-12-09 2003-06-10 2003-12-10 $7700.00 Window Closed / Lapsed

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