Patent DE-102005022632-A1 (DE)
Title: Preparation of a particle-forming rubber, useful in the preparation of a rubber-like grafted-copolymer, comprises agglomeration of a particle-forming substrate rubber in an emulsion by means of a particle-forming agglomerated latex A
Inventor: MC KEE GRAHAM EDMUND
IPC: C08F279/00
Filed: 2005-05-11
Abstract: Preparation of a particle-forming rubber (I) comprising at least a fraction of agglomerated particle, where at least a fraction exhibits a defined non-uniformity, comprises agglomeration of a particle-forming substrate rubber that is present in an emulsion by means of at least one particle-forming agglomerated latex A exhibiting a defined non-uniformity of = 0.65. Independent claims are included for: (1) a particle-forming rubber that is produced by the process; (2) an agglomerated lattice A with a defined non-uniformity produced by emulsion polymerization of one or more hydrophobic monomer followed by emulsion polymerization of a monomer mixture comprising hydrophobic and hydrophilic monomer in the presence of an alkali salt of an acid, a sulfate or sulfonate with 10-20C aliphatic residue as an emulsifier; (3) use of an agglomerated lattice A for the manufacture of the particle-forming substrate rubber in emulsion for the production of particle-forming rubber containing at least a fraction of agglomerated particle, where at least a fraction exhibits defined non-uniformity of less than 1; (4) a rubber-like graft-copolymer (p1) formed from 30-99 (preferably 30-90) wt.%, based on p1, of a particle-forming rubber obtained from the above process, as a graft substructure; 1-70 (preferably 10-70) wt.%, based on p1, of a graft substructure grafted coating (p2) with a glass transition temperature of more than 50[deg]C, preferably formed from 50-100 wt.%, related on (p2), of at least one vinyl-aromatic monomer (p21), 0-50 wt.%, based on (p2), of at least a polar, copolymerizable comonomer (p22), preferably acrylonitrile, methacrylnitrile, ester of (meth)acryl acid with 1-4C alkyl, malein acidanhydride and its imide, (meth) acrylamide and vinylalkylether with 1-8C alkyl; 0-40 wt.%, based on (p2), of one or more further monoethylenic unsaturated monomer (p23), where (p21), (p22) and (p23) constitutes to 100 wt.%; or (p24) 50-100 wt.-%, based on (p2), (p25) 0-50 wt.%, based on (p2), of at least a further copolymerizable monomer, preferably styrol, (meth)acrylnitrile or ester of acrylic acid, where the (p24) and (p25) constitutes to 100 wt.%; (5) a thermoplastic molded mass comprising a rubber-like grafted-copolymer (t0) and matrix polymer (t2), preferably polymer obtained from styrol-acrylnitrile, (alpha -methylstyrol-acrylnitrile)-, styrolmaleinimide and styrol-maleinic acid anhydride and/or (t2) partial-crystalline, preferably linear, polyamide such as polyamide-6, polyamide-6,6, polyamide-4,6, polyamide-6,12 or partial-crystalline copolyamide; and/or (t3) polyester like polymethylmethacrylate; and/or (t4) aromatic aliphatic polyester, preferably polybutyleneterephthalate, polypropyleneterephthalate, polyethylenenaphthalate or polyethyleneterephthalate; and/or (t5) polyoxyalkylene e.g. polyoxymethylene; and/or (t6) polycarbonate; and/or (t7) polyarylenesulfide, preferably polyphenylenesulfide; and (t8) optionally fiber-or particle-forming fillers or their mixtures; and (t9) optionally other additives; (6) a molded mass obtained from thermoplastic molded mass; and (7) a procedure for the control of non-uniformity of at least an agglomerated fraction of particle-forming through agglomeration agent of agglomerated lattice A producing rubber, where the agglomerated lattice A is particle-forming, comprising emulsion polymerization of at least a hydrophobic monomer followed by a monomer mixture extensively hydrophobic and hydrophilic monomer in the presence of an emulsifier, and with a particle-forming substrate rubber that is present in the emulsion.