公开(公告)号：CA794407A

公开(公告)日：1968-09-10

申请号：CA794407D

Applicant: BASF AG

Inventor： WILLERSINN HERBERT ,  VOLLMERT BRUNO ,  BOLTE HERBERT ,  RUDOLPH GUENTHER

公开(公告)号：DE3529982A1

公开(公告)日：1987-02-26

申请号：DE3529982

申请日：1985-08-22

Applicant: BASF AG

Inventor： GOETTSCH MANFRED DR ,  KINDLER HUBERT DR ,  MOEDERSHEIM NORBERT ,  RUDOLPH GUENTHER

IPC: C08J3/20 ,  C08K5/02 ,  C08L25/06

公开(公告)号：FR1428765A

公开(公告)日：1966-02-18

申请号：FR9769

申请日：1965-03-18

Applicant: BASF AG

Inventor： WILLERSINN HERBERT ,  BOLTE HERBERT ,  VOLLMERT BRUNO ,  RUDOLPH GUENTHER

IPC: C08F6/02 ,  C08F12/08 ,  C08J9/14

公开(公告)号：DE1750248A1

公开(公告)日：1971-01-21

申请号：DE1750248

申请日：1968-04-11

Applicant: BASF AG

Inventor： RUDOLPH GUENTHER ,  SCHRAMM DIETER

IPC: F16K3/06

公开(公告)号：AT261230B

公开(公告)日：1968-04-10

申请号：AT248065

申请日：1965-03-18

Applicant: BASF AG

Inventor： WILLERS HERBERT DR ,  BOLTE HERBERT DR ,  VOLLMERT BRUNO DR ,  RUDOLPH GUENTHER

IPC: C08F6/02 ,  C08F12/08 ,  C08J9/14

公开(公告)号：GB1092606A

公开(公告)日：1967-11-29

申请号：GB1125665

申请日：1965-03-17

Applicant: BASF AG

Inventor： WILLERSINN HERBERT ,  BOLTE HERBERT ,  VOLLMERT BRUNO ,  RUDOLPH GUENTHER

IPC: C08F6/02 ,  C08F12/08 ,  C08J9/14

Abstract: Expanded styrene polymers are produced by mixing styrene, or a mixture of at least 80% by weight of styrene with at least one other anionically polymerizable unsaturated monomeric compound, with an organo-alkali metal catalyst and such an amount of dimethyl ether and/or tetrahydrofuran and/or dioxane, in the absence of water and oxygen, that the heat of polymerization liberated during the polymerization of the monomers is sufficient to heat the polymer to a temperature above its softening point and to evaporate the ether, and the polymer obtained is then homogeneously mixed with 2 to 15% by weight of an easily volatile organic halogen compound or a mixture of an easily volatile aliphatic hydrocarbon and a small amount of a compound which will deactivate the organo-alkali metal catalyst, at temperatures above the softening point of the polymer, and the pressure is released. Suitable catalysts are naphthalene sodium, phenyl sodium and butyl lithium, and suitable expanding agents are methyl chloride, propane and butane, the hydrocarbons being used in conjunction with, e.g. oxalic acid or ethylene glycol. Other monomers suitable for copolymerization with the styrene are vinyltoluenes, 1,3-butadiene and isoprene.