Patents by Inventor Petra Baierweck

Petra Baierweck has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6329448
    Abstract: A continuous process for preparing pigmented thermoplastic molding compositions in an extruder, comprises I) in a first zone A) metering in from 10 to 99.999% by weight of a thermoplastic polymer into an extruder and II) in a subsequent zone at temperatures below the respective glass transition temperature of the thermoplastic A) B) adding from 0.001 to 60% by weight of a colorant and then heating the thermoplastic/colorant mixture in the subsequent zones, homogenizing the polymer melt and extruding the resultant mixture.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: December 11, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Gutsche, Rainer Anderlik, Norbert Kress, Dieter Gress, Bernd Brian, Petra Baierweck, Herbert Mosner, Hermann Brandt, Helmut Heel
  • Patent number: 5482983
    Abstract: Flameproofed thermoplastic molding materials containA) from 10 to 98.45% by weight of a thermoplastic polyamide,B) from 1 to 30% by weight of phosphorus,C) from 0.5 to 30% by weight of an elastomeric polymer,D) from 0.05 to 15% by weight of a polyethylene having a density of from 0.94 to 0.98 g/cm.sup.3 or of a polypropylene having an average molecular weight M.sub.w of from 100,000 to 2,000,000 or a mixture thereof andE) from 0 to 60% by weight of a fibrous or particulate filler.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Petra Baierweck, Brigitte Gareiss, Christoph Plachetta, Hans-Peter Beringer
  • Patent number: 5482985
    Abstract: Flameproofed thermoplastic polyamide molding materials containA) from 40 to 98% by weight of a thermoplastic polyamide,B) from 0.5 to 30% by weight of melamine cyanurate,C) from 0.5 to 50% by weight of magnesium hydroxide,D) from 1 to 50% by weight of a fibrous or particulate filler or of a mixture thereof which differs from B) and C) andE) from 0 to 30% by weight of conventional additives or processing assistants.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Petra Baierweck, Brigitte Gareiss, Karlheinz Ulmerich, Michael Gall, Manfred Koetting
  • Patent number: 5482998
    Abstract: Thermoplastic molding materials containA) 4-94% by weight of a partly aromatic, semicrystalline copolyamide having a triamine content of less than 0.5% by weight and composed of(A.sub.1) 20-90% by weight of units derived from terephthalic acid and hexamethylenediamine,(A.sub.2) 0-50% by weight of units derived from .epsilon.-caprolactam,(A.sub.3) 0-80% by weight of units derived from adipic acid and hexametheylenediamine and(A.sub.4) 0-40% by weight of further polyamide-forming monomers,the amount of components (A.sub.2) or (A.sub.3) or (A.sub.4) or of mixtures thereof being not less than 10% by weight,B) 4-94% by weight of a polyolefin homo- or copolymer or a mixture thereof,C) 2-20% by weight of an adhesion promoter,D) 0-20% by weight of a toughening polymer andE) 0-60 % by weight of additives and processing assistants.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: January 9, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Muehlbach, Petra Baierweck, Wolfgang F. Mueller, Gerd Blinne, Gerhard Ramlow
  • Patent number: 5464894
    Abstract: Flameproofed thermoplastic molding materials are obtainable by mixing from 20 to 70% by weight of a mixture of carbonates of metals of the 2nd main group of the Periodic Table of Elements in a melt of from 10 to 80% by weight of a polyester prepolymer having a viscosity number of from 40 to 100 ml/g and subsequently carrying out solid-phase postcondensation.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: November 7, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Brigitte Gareiss, Petra Baierweck, Christoph Plachetta, Karlheinz Ulmerich
  • Patent number: 5434209
    Abstract: Flameproofed thermoplastic molding materials containA) 30-98% by weight of a thermoplastic polyamide,B) 1-30% by weight of red phosphorus,C) 1-15% by weight of a mono- or diphenolic compound or of a mixture thereof,D) 0-60% by weight of a fibrous or particulate filler or of a mixture thereof andE) 0-30% by weight of an elastomeric polymer.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: July 18, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Brigitte Gareiss, Petra Baierweck
  • Patent number: 5412017
    Abstract: Flameproofed thermoplastic molding materials are obtainable by mixingA) from 20 to 70% by weight of a magnesium hydroxide andB) from 0 to 70% by weight of conventional additives and processing assistantsinto a melt ofC) from 10 to 80% by weight of a polyamide prepolymer having a viscosity number of from 40 to 100 ml/gand then carrying out solid-phase postcondensation.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: May 2, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Brigitte Gareiss, Petra Baierweck, Christoph Plachetta, Karlheinz Ulmerich
  • Patent number: 5405890
    Abstract: A flameproofed black thermoplastic molding material containingA) from 5 to 98.9% by weight of a thermoplastic polyamide,B) from 1 to 20% by weight of red phosphorusC) from 0.1 to 5% by weight of a colorant complementary with red phosphorus to produce blackened polyamide,D) from 0 to 30% by weight of an elastomeric polymer,E) from 0 to 50% by weight of a fibrous or particulate filler or of a mixture thereof,F) from 0 to 70% by weight of a polyphenylene ether andG) from 0 to 30% by weight of conventional additives and processing assistants,the percentages by weight of components A to G being 100% in each case.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: April 11, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Petra Baierweck, Doris Zeltner, Brigitte Gareiss, Heiner Goerrissen, Karlheinz Ulmerich, Klaus Muehlbach, Michael Gall
  • Patent number: 5326850
    Abstract: Molding materials are composed ofA) from 40 to 100% by weight of a copolyamide based ona.sub.1) from 1 to 20 mol%, based on the copoly- amide, of at least one monomer that contains at least one olefinic double bond (monomers a.sub.1) from the group of the.alpha..sub.1) olefinically unsaturated lactams,.alpha..sub.2) olefinically unsaturated aminocarboxylic acids,.alpha..sub.3) olefinically unsaturated dicarboxylic acids,.alpha..sub.4) olefinically unsaturated diamines, anda2) from 80 to 99 mol%, based on the copolyamide, of at least one monomer that contains no olefinic double bonds (monomers a2) from the group of the.beta..sub.1) lactams.beta..sub.2) aminocarboxylic acids,.beta..sub.3) dicarboxylic acids,.beta..sub.4) diamines, andB) from 0 to 35% by weight of an impact modifying rubber,C) from 0 to 50% by weight of a filler and/or reinforcing agent,D) from 0 to 20% by weight of a flame retardant, andE) from 0 to 10% by weight of further additives and processing aids.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: July 5, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Goetz, Brigitte Gareiss, Andreas Deckers, Petra Baierweck
  • Patent number: 5266656
    Abstract: Molding materials are composed ofA) from 40 to 100% by weight, based on the total weight of the molding material, of a polyamide mixture based ona.sub.1) from 5 to 30% by weight, based on the total weight of the polyamide mixture, of at least one homo- or copolyamide that contains olefinic double bonds and comprises.alpha.) from 40 to 100 mol %, based on homo- or copolyamide, of at least one monomer that contains at least one olefinic double bond (monomers .alpha.) from the group of the.alpha..sub.1) olefinically unsaturated lactams,.alpha..sub.2) olefinically unsaturated aminocarboxylic acids,.alpha..sub.3) olefinically unsaturated dicarboxylic acids,.alpha..sub.4) olefinically unsaturated diamines, and.beta.) from 0 to 60 mol %, based on homo- or copolyamide, of at least one monomer that contains no olefinic double bonds (monomers .beta.) from the group of the.beta..sub.1) lactams.beta..sub.2) aminocarboxylic acids,.beta..sub.3) dicarboxylic acids,.beta..sub.4) diamines, anda.sub.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: November 30, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Goetz, Brigitte Gareiss, Andreas Deckers, Petra Baierweck
  • Patent number: 5135971
    Abstract: Flameproofed thermoplastic molding compositions contain(A) 10-99% by weight of a thermoplastic polyamide or polyester or polyphenylene ether or a mixture thereof,(B) 1-50% by weight of red phosphorus having a particle size of up to 2 mm which contains, per 100 parts by weight, from 0.05 to 5 parts by weight of a polyurethane or polyester-polyurethane as phlegmatizer,(C) 0-60% by weight of a fibrous or particulate filler or a mixture thereof and(D) 0-20% by weight of an elastomeric polymer.
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: August 4, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Steiert, Hans-Peter Weiss, Christoph Plachetta, Petra Baierweck, Klaus Muehlbach, Brigitte Gareiss
  • Patent number: 5049599
    Abstract: Flameproofed thermoplastic molding compositions contain(A) 10-99% by weight of a thermoplastic polyamide or polyester or polyphenylene ether or a mixture thereof,(B) 1-50% by weight of red phosphorus having a particle size of up to 2 mm which contains, per 100 parts by weight, from 0.05 to 5 parts by weight of a polyurethane or polyester-polyurethane as phlegmatizer,(C) 0-60% by weight of a fibrous or particulate filler or a mixture thereof and(D) 0-20% by weight of an elastomeric polymer.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: September 17, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Steiert, Hans-Peter Weiss, Christoph Plachetta, Petra Baierweck, Klaus Muehlbach, Brigitte Gareiss