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US5055527A Expired / Lapsed US ⏱️ 0.0 years remaining

Thermoplastics impact modified with functionalized polymers and use thereof for producing moldings

Assignee: BASF SE
•
Filing: 1990-06-20
•
Granted: 1991-10-08
•
Expires: 2010-06-20
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Abstract

Abstract Impact modified thermoplastic blends of components A, B and optionally C, consisting of: A) from 99 to 60 percent by weight of a polymeric rigid matrix consisting of a1) 60-99.5 percent by weight of an aromatic vinyl compound present as copolymerized units, a2) 0.5-20 percent by weight of an unsaturated carboxylic anhydride present as copolymerized units and a3) 014 35 percent by weight of an alkenylnitrile present as copolymerized units, B) from 1 to 40 percent by weight of a polymeric flexibilizing component consisting of b1) 100-60 percent by weight of a monomer from the group of the 1,4-dienes which is present as copolymerized units and b2) 0-40 percent by weight of an aromatic vinyl compound present as copolymerized units. and optionally C) customary additives in customary amounts, the polymers of flexibilizing component B having amino end groups, are used for producing moldings.

Inventors

  • 👤 Klaus Bronstert
  • 👤 Hans-Dieter Schwaben
  • 👤 Adolf Echte

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 11:35
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L35/00; C08L35/06; C08L53/00; C08L53/02; C08L9/00

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 225 words
An impact modified thermoplastic blend of components A, B and optionally C, consisting of: A) from 99 to 60 percent by weight, based on the sum of A and B, of a polymeric rigid matrix consisting of a1) 60-99.5 percent by weight of an aromatic vinyl compound present as copolymerized units, a2) 0.5-20 percent by weight of an unsaturated carboxylic anhydride present as copolymerized units and a3) 0-35 percent by weight of an alkenylnitrile present as copolymerized units, the weight percentages in each case being based on the sum of a1, a2 and a3, B) from 1 to 40 percent by weight, based on the sum of A and B, of a polymeric flexibilizing component consisting of a modified block copolymer of b1) 91-60 percent by weight of the monomer 1,4-butadiene which is present as copolymerized units and b2) 9-40 percent by weight of styrene present as copolymerized units, the weight percentages in each case being based on the sum of b1 and b2 and also C) from 0 to 30 percent by weight, based on 100 parts by weight of the sum of components A and B, of customary additives, wherein the polymers of flexibilizing component B have been modified by substitution with amino groups only at the chain ends and have only one amino end group per chain end at the chain end.
Claim 2
Dependent Claim 225 words
An impact modified thermoplastic blend of components A, B and optionally C, consisting of: A) from 99 to 60 percent by weight, based on the sum of A and B, of a polymeric rigid matrix consisting of a1) 60-99.5 percent by weight of an aromatic vinyl compound present as copolymerized units, a2) 0.5-20 percent by weight of an unsaturated carboxylic anhydride present as copolymerized units and a3) 0-35 percent by weight of an alkenylnitrile present as copolymerized units, the weight percentages in each case being based on the sum of a1, a2 and a3, B) from 1 to 40 percent by weight, based on the sum of A and B, of a polymeric flexibilizing component consisting of a modified block copolymer of b1) 91-60 percent by weight of the monomer 1,4-butadiene which is present as copolymerized units and b2) 9-40 percent by weight of styrene present as copolymerized units, the weight percentages in each case being based on the sum of b1 and b2 and also C) from 0 to 30 percent by weight, based on 100 parts by weight of the sum of components A and B, of customary additives, wherein the polymers of flexibilizing component B have been modified by substitution with amino groups only at the chain ends and have only one amino end group per chain end at the chain end.

References Cited (Backward Citations)

US4393164A Cited
DE3140565A1 Cited
US4551510A Cited
US4460741A Cited
US4721752A Cited
US4753991A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-10-07 1995-04-08 1995-10-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-10-07 1999-04-08 1999-10-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-10-07 2003-04-08 2003-10-08 $7700.00 Window Closed / Lapsed

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