C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 9/02 (2006.01) C08K 5/103 (2006.01) C08K 5/527 (2006.01) C08L 51/04 (2006.01) C08L 55/02 (2006.01) C08L 69/00 (2006.01)
Patent
CA 2058236
MN 4103 MOULDING THERMOPLASTIC COMPOSITIONS ENDOWED WITH IMPROVED MOULD RELEASE CHARACTERISTICS. ABSTRACT Moulding thermoplastic compositions, endowed with improved mould release characteristics, comprising: A) an impact resistant vinyl aromatic copolymer consisting of an ethylenically unsaturated nitrile, a vinyl aromatic monomer and a rubber; B) an engineering polymer; and C) an effective amount of a release agent constituted by a syner= gistic mixture of an ester of a C16 - C18 acid with glycerol and an ester of a saturated aliphatic C10 - C20 acid with a C4 - C6 aliphatic alcohol. The physical-mechanical properties of the compositions at high moulding temperatures can be improved by addition of an effective amount of a bis(alkyl-phenyl)pentaerythritol diphosphite. The compositions can, furthermore, contain in addition a grafted polymer consisting of an elastomeric core having a Tg lower than 10°C and containing vinyl monomer chains grafted thereon.
Fasulo Gian C.
Ghidoni Dario
Mori Francesco
Ecp Enichem Polimeri S.r.l.
Fasulo Gian C.
Ghidoni Dario
Mori Francesco
Robic
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