EXPANDABLE BEADS BASED ON A POLYMER OF A VINYLAROMEXPANDABLE BEADS BASED ON A POLYMER OF A VINYLAROMATIC COMPOUND CONTAINING BLOWING AGENT AND PLASTICATIC COMPOUND CONTAINING BLOWING AGENT AND PLASTICIZER IZER

Title:

Document Type and Number:

WIPO Patent Application WO1996015181

Kind Code:

A3

Abstract:

The present invention relates to expandable beads based on a polymer of a vinylaromatic compound containing a blowing agent and, in an amount of 0.1 up to 2% wt, preferably 0.3 up to 1.5% wt calculated on the beads, of a plasticizer that is based on oligomers of styrene and/or alpha-methylstyrene having a number-average molecular weight (Mn) in the range of 200 to 500, preferably of 260 to 460; and a process for preparing these expandable beads.

Inventors:

PALEJA RAKESH JAYSINH
VLIERS DOMINIQUE PAUL
WILLEMS MARIA JOHANNA

Application Number:

PCT/EP1995/004510

Publication Date:

August 01, 1996

Filing Date:

November 15, 1995

Export Citation:

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Assignee:

SHELL INT RESEARCH (NL)

International Classes:

C08F12/06; C08J9/00; C08J9/16; (IPC1-7): C08J9/16; C08F12/08; C08J9/00

Foreign References:

EP0217516A2	1987-04-08
US4520135A	1985-05-28
BE633239A

Other References:

DATABASE WPI Week 8130, Derwent World Patents Index; AN 81-54012D

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