公开(公告)号：DE2940804A1

公开(公告)日：1981-04-23

申请号：DE2940804

申请日：1979-10-09

Applicant: BASF AG

Inventor： HAMBRECHT JUERGEN DIPL CHEM DR ,  SCHMITT BURKHARD DIPL CHEM DR ,  STEPHAN RUDOLF DIPL CHEM DR

IPC: C08L25/02 ,  C08L51/00 ,  C08L51/06

Abstract: The compsn. contains a mixture of two components (A) and (B) and opt. the usual additives (C). (A) is present in amt. of 95-65, esp. 90-70% (w.r.t. (A) and (B)) and contains (a1) 97-70, pref. 95-80%, w.r.t. (A) of a hard component derived from (a11) 90-60 pt. of at least one vinyl aromatic monomer, with (a12) 10-40 pt. of at least one ethylenically unsatd. monomer, and (a13) 0-5- pt. of a further comonomer; (a2) 3-30, pref. 5-20%, w.r.t. (A) of an elastomeric copolymer derived from (a21) at least one vinyl aromatic monomer, (a22) acrylonitrile, and (a23) opt. other comonomers, and (a24) 20-50, pref. 30-45% of a rubber; (B) is a graft copolymer, present in amt. of 5-35%, w.r.t. (A) + (B), and obtained by emulsion polymerisation of (b1) 10-50 pt. of a mixture of (b11) 90-60 pt. of at least one vinyl aromatic monomer, (b12) 10-40% of at least one ethylenically unsatd. monomer, in the presence of (b2) 100 pt. of a (co)polymer from (b21) 100-40 pt. of at least one acrylic acid-4-12C alkyl-ester, (b22) 0-40 pt. butadiene and (b23) 0-20pt. of further comonomers. In the prepn. of (a2), the rubber (a24) is an ethylene-propylene copolymer, and partic. a terpolymer (EPDM. rubber). The mouldings have improved impact strength under weathering as compared with known products. Impact strength at 100 m temp. is good. The compsns. are easily hookable and can be coloured.