公开(公告)号：DE3620683C1

公开(公告)日：1987-07-02

申请号：DE3620683

申请日：1986-06-20

Applicant: BASF AG

Inventor： VOSS HARRO DR ,  HAHN KLAUS DR ,  WALTER MANFRED DR ,  DE DR GRAVE ISIDOOR

IPC: C08J9/16 ,  C08F2/44 ,  C08J9/14 ,  C08J9/22 ,  C08K5/01 ,  C08K5/02 ,  C08L25/04 ,  C08J9/20

Abstract: Particulate styrene polymers containing blowing agents are prepared by a process in which an aliphatic hydrocarbon of 7 to 9 carbon atoms is added in an amount of from 0.01 to 0.5% by weight, based on the styrene polymer, before, during or after the polymerization. The particulate styrene polymers can be processed to foam blocks and moldings having a satisfactory smooth surface.

公开(公告)号：DE2406997A1

公开(公告)日：1975-08-28

申请号：DE2406997

申请日：1974-02-14

Applicant: BASF AG

Inventor： VOSS HARRO DR ,  NICKL JOHANN DR ,  BRONSTERT KLAUS DR ,  SCHICK HANNES DR

IPC: C08F10/14

Abstract: Polymers of 4-methylpentene-1 alone or with up to 10 wt. % of other 2-18C -alpha-mono-olefines as comonomer, are obtd. by polymsn. at 90-150 degrees in the presence of hydrogen at a partial pressure of 0.1 to 10.00 atm., and using a Ziegler-Natta catalyst system comprising (a) a TiCl3 component and (b) an alkylaluminium component, the atomic ratio of Ti:Al in the system amtg. to from 1:1 to 1:100. By use of temp. of 90-150 degrees C, which is higher than used in the otherwise comparable known process, a higher yield per unit catalyst and per unit time is obtD. without deleterious effects on product crystallinity. The polymers are valuable for making transparent moulded or injection moulded articles which are heat resistant to 150 degrees C.