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US5120788A Expired / Lapsed US ⏱️ 0.0 years remaining

Hermoplastic molding material of improved toughness

Assignee: BASF SE
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Filing: 1991-02-20
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Granted: 1992-06-09
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Expires: 2011-02-20
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Abstract

Abstract A thermoplastic molding material containing (based on the sum of A+B+C) A: from 1 to 30% by weight of one or more elastomeric polymers A having a mean particles size of from 30 to 1000 nm and comprising, based on A, A1: from 50 to 99.9% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical, A2: from 0.1 to 5% by weight of one or more polyfunctional, crosslinking monomers A2 and A3: up to 50% by weight of one or more monoethylenically unsatuated monomers A3, as the graft base, B: from 5 to 40% by weight of shells B grafted onto the elastomeric polymer A and comprising, based on B, B1: from 30 to 90% by weight of one or more vinylaromatic monomers B1, B2: from 5 to 40% by weight of one or more polar, copolymerizable, ethylenically unsaturated monomers B2, and B3: from 5 to 30% by weight of one or more alkyl acrylates B3 having from 7 to 20 carbon atoms in the alkyl radical, and C: from 30 to 94% by weight of a copolymer C comprising C1: one or more vinyl-aromatic monomers C1 and C2: one or more polar, copolymerizable, ethylenically unsaturated monomers C2.

Inventors

  • 👤 Friedrich Seitz
  • 👤 Karl Ruppmich

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 23:21
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08L25/00; C08L25/02; C08L51/00; C08L51/04; C08L51/003

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 213 words
A thermoplastic molding material containing (based on the sum of A+B+C) A: from 1 to 30% by weight of one or more elastomeric polymers A having a mean particle size of from 30 to 1000 nm and comprising, based on A, A1: from 50 to 99.9% by weight of one or more alkyl acrylates A1 selected from the group consisting of butyl acrylate and ethylhexyl acrylate, A2: from 0.1 to 5% by weight of one or more poly-functional, crosslinking monomers A2 which contain two or more ethylenic double bonds which are capable of copolymerization and are not conjugated in the 1,3-position and A3: up to 50% by weight of one or more monoethylenically unsaturated monomers A3, selected from the group consisting of butadiene, isoprene, styrene, acrylonitrile, methyl methacrylate and vinyl methyl ether as the graft base, B: from 5 to 40% by weight of a shell B grafted onto the elastomeric polymer A and comprising, based on B, B1: from 30 to 90% by weight of styrene monomer B1, B2: from 5 to 40% by weight of acrylonitrile monomer B2; and B3: from 5 to 30% by weight of ethylhexyl acrylate monomer B3, and C: from 30 to 94% by weight of copolymer C consisting of C1: styrene C1 and C2: acrylonitrile C2.
Claim 2
Dependent Claim 213 words
A thermoplastic molding material containing (based on the sum of A+B+C) A: from 1 to 30% by weight of one or more elastomeric polymers A having a mean particle size of from 30 to 1000 nm and comprising, based on A, A1: from 50 to 99.9% by weight of one or more alkyl acrylates A1 selected from the group consisting of butyl acrylate and ethylhexyl acrylate, A2: from 0.1 to 5% by weight of one or more poly-functional, crosslinking monomers A2 which contain two or more ethylenic double bonds which are capable of copolymerization and are not conjugated in the 1,3-position and A3: up to 50% by weight of one or more monoethylenically unsaturated monomers A3, selected from the group consisting of butadiene, isoprene, styrene, acrylonitrile, methyl methacrylate and vinyl methyl ether as the graft base, B: from 5 to 40% by weight of a shell B grafted onto the elastomeric polymer A and comprising, based on B, B1: from 30 to 90% by weight of styrene monomer B1, B2: from 5 to 40% by weight of acrylonitrile monomer B2; and B3: from 5 to 30% by weight of ethylhexyl acrylate monomer B3, and C: from 30 to 94% by weight of copolymer C consisting of C1: styrene C1 and C2: acrylonitrile C2.
Claim 3
Dependent Claim 41 words
A thermoplastic molding material as claimed in claim 5, whose graft shell B comprises from 45 to 80% by weight of monomer B1, from 10 to 30% by weight of monomer B2and from 10 to 25% by weight of monomer B3.

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) 1995-06-09 1995-12-09 1996-06-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-06-09 1999-12-09 2000-06-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-06-09 2003-12-09 2004-06-09 $7700.00 Window Closed / Lapsed

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