Plastic compositions partially crosslinked by unsaturated esters

US5994471A · kind A · utility

Assignee

• BASF SE

Inventors

• Stefan Seelert · Bischofswerda, DE
• Joachim Rosch · Ludwigshafen, DE
• Klaus-Dieter Rumpler · Monsheim, DE
• Meinolf Kersting · Neustadt, DE
• Karl Huber · Bischofswerda, DE

Key dates

• Filing date: Oct 28, 1997
• Grant date: Nov 30, 1999
• Expiry date: Oct 28, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Partially crosslinked plastic compositions with a melt flow index at 230.degree. C. and under a load of 2.16 kg, of from 0.1 to 100 g/10 min, and a gel content of less than 12% by weight, is prepared from PA1 a) a polymer comprising PA2 a.sub.1) from 60 to 92% by weight of a propylene homopolymer and PA2 a.sub.2) from 8 to 40% by weight of a propylene copolymer having C.sub.2 -C.sub.10 -alk-1-enes incorporated into its polymer chain and with a comonomer content, based on a.sub.2) of from 15 to 70% by weight, and PA1 b) a compound of the formula (I) ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl, PA1 X is substituted or unsubstituted C.sub.1 -C.sub.30 -alkyl or substituted or unsubstituted C.sub.7 -C.sub.30 -arylalkyl, where each of the alkyl groups may be interrupted by PA1 one or more oxygen atoms in ether moieties (--O--) or oxycarbonyl moieties (--O--CO--) and/or by PA1 nitrogen groups of the formula NR.sup.2, where R.sup.2 is hydrogen, C.sub. -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -hydroxyalkyl, PA1 and PA1 n is the number 2 or 3, obtainable by reacting the polymer a) with the compound b) at from 180 to 280.degree. C., under a pressure of from 1 to 100 bar, and with…