公开(公告)号：AU1842376A

公开(公告)日：1978-04-13

申请号：AU1842376

申请日：1976-10-06

Applicant: BASF AG

Inventor： KEPPLER HANS GEORG ,  STAHNECKER ERHARD ,  MOELLER ROLF

IPC: C08F2/00 ,  C08F2/18 ,  C08F2/20 ,  C08F26/00 ,  C08F26/10 ,  C08F271/02 ,  C08J9/20

公开(公告)号：AU5784890A

公开(公告)日：1991-01-03

申请号：AU5784890

申请日：1990-06-27

Applicant: BASF AG

Inventor： HINTZ HANS ,  GUHR UWE ,  HAHN KLAUS ,  KEPPLER HANS GEORG

IPC: C08F2/20 ,  C08F2/44 ,  C08F12/00 ,  C08F12/08 ,  C08J9/20

Abstract: Bead-form expandable styrene polymers are obtained by suspension polymerization of styrene with addition of from 1 to 10% by weight of C3- to C6-hydrocarbons as blowing agents and, if desired, customary additives, where (a) the polymerization is initiated by rapidly heating the polymerization batch to form 80 DEG to 90 DEG C. within a maximum of 2 hours, (b) subsequently allowing the reaction temperature to increase to from 120 DEG C. to 130 DEG C. by from 8 DEG to 17 DEG C. per hour, and (c) the conversion is formed 30 to 60% when 100 DEG C. is reached, and (d) the conversion is 80% or more when the maximum temperature is reached, and (e) the batch is subsequently kept at from 100 DEG to 130 DEG C. until the residual monomer content in the polymer has dropped to less than 0.1%.

公开(公告)号：AU626433B2

公开(公告)日：1992-07-30

申请号：AU5784890

申请日：1990-06-27

Applicant: BASF AG

Inventor： HINTZ HANS ,  GUHR UWE ,  HAHN KLAUS ,  KEPPLER HANS GEORG

IPC: C08F2/20 ,  C08F2/44 ,  C08F12/00 ,  C08F12/08 ,  C08J9/20

Abstract: Bead-form expandable styrene polymers are obtained by suspension polymerization of styrene with addition of from 1 to 10% by weight of C3- to C6-hydrocarbons as blowing agents and, if desired, customary additives, where (a) the polymerization is initiated by rapidly heating the polymerization batch to form 80 DEG to 90 DEG C. within a maximum of 2 hours, (b) subsequently allowing the reaction temperature to increase to from 120 DEG C. to 130 DEG C. by from 8 DEG to 17 DEG C. per hour, and (c) the conversion is formed 30 to 60% when 100 DEG C. is reached, and (d) the conversion is 80% or more when the maximum temperature is reached, and (e) the batch is subsequently kept at from 100 DEG to 130 DEG C. until the residual monomer content in the polymer has dropped to less than 0.1%.

公开(公告)号：AU3859372A

公开(公告)日：1973-08-09

申请号：AU3859372

申请日：1972-02-03

Applicant: BASF AG

Inventor： KEPPLER HANS GEORG ,  ZUERN LUDWIG ,  STAHNECKER ERHARD ,  GRUBER VINZENZ

IPC: C02F1/54 ,  C02F9/00 ,  C02C5/02 ,  B01D21/01

公开(公告)号：AU2825677A

公开(公告)日：1979-03-01

申请号：AU2825677

申请日：1977-08-26

Applicant: BASF AG

Inventor： KEPPLER HANS GEORG ,  STAHNECKER ERHARD ,  MOELLER ROLF

IPC: C08F2/00 ,  C08F2/18 ,  C08F2/20 ,  C08F2/44 ,  C08F12/08 ,  C08J9/20 ,  C08K5/01 ,  C01B25/22

Abstract: Process for the manufacture of styrene polymers optionally containing blowing agent by polymerization in aqueous suspension using as the suspension stabilizer a calcium phosphate which after its manufacture by precipitation has been heated in aqueous dispersion for at least 2 hours at from 70 DEG to 130 DEG C. The styrene polymers may be used for the manufacture of foams.

公开(公告)号：AU2165277A

公开(公告)日：1978-08-03

申请号：AU2165277

申请日：1977-01-26

Applicant: BASF AG

Inventor： KEPPLER HANS GEORG ,  MOELLER ROLF ,  STAHNECKER ERHARD

IPC: C08F2/00 ,  C08F2/18 ,  C08F2/20 ,  C08F12/08 ,  C08J9/14

Abstract: Styrene polymers are prepared by suspension polymerization using, as suspension stabilizers, mixtures of (A) a sparingly soluble inorganic metal compound and (B) a fine polymer dispersion. The styrene polymers may be used, together with blowing agents, for the manufacture of foams.