公开(公告)号：DE1936790A1

公开(公告)日：1971-02-18

申请号：DE1936790

申请日：1969-07-19

Applicant: BASF AG

Inventor： PRIEBE EDMUND DR ,  BURGER HEINZ DR ,  WEBER HEINZ DR ,  HIRSCH GUENTER DR ,  SCHULLER HELMUT DR ,  TRIESCHMANN HANS-GEORG PROF DR ,  WILLERSINN HERBERT DR

IPC: C08J9/20 ,  C08F7/04

Abstract: (Co)polymerisation of styrene or mixtures thereof with 50% or less of comonomer(s) is carried out in suspension, in presence of a foaming agent and a suspension agent and 0.01 to 0.3%, with respect to weight of monomer(s) of a polysiloxane. The (co)polymer obtained may be coated with an emulsifier. Addition of the polysiloxane results in production of a finely divided polymer having excellent flow characteristics without tendency to agglomeration of the particles. Esp. suitable for prodn. of thin-walled foamed mouldings having homogeneous structure and good mechanical strength.

公开(公告)号：DE1769475A1

公开(公告)日：1971-09-16

申请号：DE1769475

申请日：1968-05-29

Applicant: BASF AG

Inventor： STAHNECKER ERHARD DR ,  BURGER HEINZ DR ,  GROHMANN JOHANNES DR

IPC: C08J9/224 ,  C08F33/02

公开(公告)号：DE1769096A1

公开(公告)日：1971-09-23

申请号：DE1769096

申请日：1968-04-03

Applicant: BASF AG

Inventor： STAHNECKER ERHARD DR ,  BURGER HEINZ DR ,  GROHMANN JOHANNES DR

IPC: C08J9/22 ,  C08F33/02

公开(公告)号：DE2133531A1

公开(公告)日：1973-01-25

申请号：DE2133531

申请日：1971-07-06

Applicant: BASF AG

Inventor： ZUERN LUDWIG DR ,  STAHNECKER ERHARD DR ,  BURGER HEINZ DR ,  RAPPOLD KURT DR

IPC: C08J9/14 ,  C08J9/16 ,  C08F33/02

Abstract: The polymers consist of polystyrene, polymeric mixts. of styrene (K value 54-72 pref. 63-70) plus propane (0.05-3 pref. 0.1-0.6 wt.%) as propellant and 7-15C (pref. 7-10C) (cyclo) aliphatic hydrocarbons (0.1-7.0 pref. 0.3-6.0 wt.%) e.g. isooctane. The polymeric mixt. pref. consists of alpha-methyl styrene, (meth) acrylonitrile, 1-8C alcoholic esters of (meth) acrylic or fumaric acids N-vinyl cpds. or e.g. divinyl benzene (0.001-1.0 pref. 0.01-0.1 wt.%). The polymers are frothed by steam or heated gases deposited for 24 hrs. at room temp. compressed in a perforated form and refrothed by superheated steam through the perforations. The prod. (particle diam. 0.1-6 pref. 0.4-5mm) is used in pearl, granular etc. form, in the mfre. of polystyrene foaming plastics with reduced contraction (=1%).

公开(公告)号：DE1669746A1

公开(公告)日：1971-07-01

申请号：DE1669746

申请日：1967-11-29

Applicant: BASF AG

Inventor： MOELLER ROLF DR ,  BURGER HEINZ DR ,  POHLEMANN HEINZ DR ,  STANGER BERND DR ,  DISTLER HARRY DR

IPC: C08J9/224 ,  C08F33/02