公开(公告)号：AU1090792A

公开(公告)日：1992-08-20

申请号：AU1090792

申请日：1992-02-13

Applicant: BASF AG

Inventor： HAHN KLAUS ,  DIETRICH MATTHIAS

IPC: B29B13/06 ,  C08F6/06 ,  C08F6/24 ,  C08J9/22 ,  C08J9/224 ,  F26B3/08 ,  F26B17/10 ,  B26B3/08 ,  C08J7/06

Abstract: In order to dry finely divided, expandable styrene polymers having a particle size of from 0.02 to 3 mm, the bead polymers, in the form of a slurry in water, are freed from the majority of the water and subsequently exposed to a gaseous medium. The drying is carried out in two steps, by jointly conveying the bead polymer and a first gas stream, warmed to from about 45 DEG to 120 DEG C., through a flow dryer, the ratio between the gas and the bead polymer being from 2 to 40 kg/kg, separating the bead polymer from the first gas stream, immediately transferring the bead polymer into a fluidized bed and treating the polymer with a second gas stream at from about 0 DEG to 75 DEG C. Styrene polymers obtained in this way are free-flowing and can be foamed without difficulty in commercially available prefoaming units. They are used, inter alia, in the construction industry, for example as aggregate for insulation plaster.

公开(公告)号：CA2061175A1

公开(公告)日：1992-08-15

申请号：CA2061175

申请日：1992-02-13

Applicant: HAHN KLAUS ,  DIETRICH MATTHIAS ,  BASF AG

Inventor： HAHN KLAUS ,  DIETRICH MATTHIAS

IPC: B29B13/06 ,  C08F6/06 ,  C08F6/24 ,  C08J9/22 ,  C08J9/224 ,  F26B3/08 ,  F26B17/10 ,  C08F112/08

Abstract: O.Z. 0050/42214 of the Disclosure: In order to dry finely divided, expandable styrene polymers having a particle size of from 0.02 to 3 mm, the bead polymers, in the form of a slurry in water, are freed from the majority of the water and subsequently exposed to a gaseous medium. The drying is carried out in two steps, by jointly conveying the bead polymer and a first gas stream, warmed to from about 45.degree. to 120.degree.C, through a flow dryer, the ratio between the gas and the bead polymer being from 2 to 40 kg/kg, separating the bead polymer from the first gas stream, immediately transferring the bead polymer into a fluidized bed and treating the polymer with a second gas stream at from about 0.degree. to 75.degree.C. Styrene polymers obtained in this way are free-flowing and can be foamed without difficulty in commercially available prefoaming units. They are used, inter alia, in the construction industry, for example as aggregate for insulation plaster.

公开(公告)号：DE4021961A1

公开(公告)日：1992-01-16

申请号：DE4021961

申请日：1990-07-10

Applicant: BASF AG

Inventor： STAHNECKER ERHARD DR ,  DEUSCHEL WALTER DR ,  FREY GUENTER DR ,  GOERTZ HANS-HELMUT DR ,  LIEDY WERNER DR ,  DIETRICH MATTHIAS

IPC: C08F6/00 ,  C08F6/14 ,  C08F6/16

公开(公告)号：DE4037866A1

公开(公告)日：1992-06-04

申请号：DE4037866

申请日：1990-11-28

Applicant: BASF AG

Inventor： DIETRICH MATTHIAS ,  LIEDY WERNER DR ,  BAYER ROBERT ,  GOEBEL WERNER

IPC: F26B3/08 ,  F26B3/34

Abstract: Fluidised eddy material (2) is placed in an eddy bed drier (1) and contains material in a wet state for drying. Eddy gas (3) is heated via a heat exchanger, and distributed via a distributor floor (1a) into the drier. Through a filter (1b), eddy gas (5) and solvent vapour leave the drier. Entry of the product to be dried into the eddy bed drier, and withdrawal of the dried product occur via pipe conduits and known conveyor components (6,7). The eddy bed drier is arranged in an installation (8) for prodn. of a high frequency field by which the wet product is dried by dielectric heat. USE - To dry temp.-sensitive wet material.

公开(公告)号：DE59200453D1

公开(公告)日：1994-10-13

申请号：DE59200453

申请日：1992-01-22

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  DIETRICH MATTHIAS

IPC: B29B13/06 ,  C08F6/06 ,  C08F6/24 ,  C08J9/22 ,  C08J9/224 ,  F26B3/08 ,  F26B17/10

Abstract: In order to dry finely divided, expandable styrene polymers having a particle size of from 0.02 to 3 mm, the bead polymers, in the form of a slurry in water, are freed from the majority of the water and subsequently exposed to a gaseous medium. The drying is carried out in two steps, by jointly conveying the bead polymer and a first gas stream, warmed to from about 45 DEG to 120 DEG C., through a flow dryer, the ratio between the gas and the bead polymer being from 2 to 40 kg/kg, separating the bead polymer from the first gas stream, immediately transferring the bead polymer into a fluidized bed and treating the polymer with a second gas stream at from about 0 DEG to 75 DEG C. Styrene polymers obtained in this way are free-flowing and can be foamed without difficulty in commercially available prefoaming units. They are used, inter alia, in the construction industry, for example as aggregate for insulation plaster.

公开(公告)号：AT111012T

公开(公告)日：1994-09-15

申请号：AT92100958

申请日：1992-01-22

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  DIETRICH MATTHIAS

IPC: B29B13/06 ,  C08F6/06 ,  C08F6/24 ,  C08J9/22 ,  C08J9/224 ,  F26B3/08 ,  F26B17/10 ,  C08L25/04

Abstract: In order to dry finely divided, expandable styrene polymers having a particle size of from 0.02 to 3 mm, the bead polymers, in the form of a slurry in water, are freed from the majority of the water and subsequently exposed to a gaseous medium. The drying is carried out in two steps, by jointly conveying the bead polymer and a first gas stream, warmed to from about 45 DEG to 120 DEG C., through a flow dryer, the ratio between the gas and the bead polymer being from 2 to 40 kg/kg, separating the bead polymer from the first gas stream, immediately transferring the bead polymer into a fluidized bed and treating the polymer with a second gas stream at from about 0 DEG to 75 DEG C. Styrene polymers obtained in this way are free-flowing and can be foamed without difficulty in commercially available prefoaming units. They are used, inter alia, in the construction industry, for example as aggregate for insulation plaster.

公开(公告)号：DE4037866C2

公开(公告)日：2000-05-18

申请号：DE4037866

申请日：1990-11-28

Applicant: BASF AG

Inventor： DIETRICH MATTHIAS ,  LIEDY WERNER ,  BAYER ROBERT ,  GOEBEL WERNER

IPC: F26B3/08 ,  F26B3/34

公开(公告)号：FR2669718B1

公开(公告)日：1998-01-23

申请号：FR9114550

申请日：1991-11-26

Applicant: BASF AG

Inventor： DIETRICH MATTHIAS ,  LIEDY WERNER ,  BAYER ROBERT ,  GOEBEL WERNER

IPC: F26B3/08 ,  F26B3/34 ,  F26B3/347 ,  F26B23/08

公开(公告)号：DE59105560D1

公开(公告)日：1995-06-29

申请号：DE59105560

申请日：1991-06-29

Applicant: BASF AG

Inventor： STAHNECKER ERHARD DR ,  DEUSCHEL WALTER DR ,  FREY GUENTER DR ,  GOERTZ HANS-HELMUT DR ,  LIEDY WERNER DR ,  DIETRICH MATTHIAS

IPC: C08F6/00 ,  C08F6/14 ,  C08F6/16

公开(公告)号：ES2059164T3

公开(公告)日：1994-11-01

申请号：ES92100958

申请日：1992-01-22

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  DIETRICH MATTHIAS

IPC: B29B13/06 ,  C08F6/06 ,  C08F6/24 ,  C08J9/22 ,  C08J9/224 ,  F26B3/08 ,  F26B17/10

Abstract: In order to dry finely divided, expandable styrene polymers having a particle size of from 0.02 to 3 mm, the bead polymers, in the form of a slurry in water, are freed from the majority of the water and subsequently exposed to a gaseous medium. The drying is carried out in two steps, by jointly conveying the bead polymer and a first gas stream, warmed to from about 45 DEG to 120 DEG C., through a flow dryer, the ratio between the gas and the bead polymer being from 2 to 40 kg/kg, separating the bead polymer from the first gas stream, immediately transferring the bead polymer into a fluidized bed and treating the polymer with a second gas stream at from about 0 DEG to 75 DEG C. Styrene polymers obtained in this way are free-flowing and can be foamed without difficulty in commercially available prefoaming units. They are used, inter alia, in the construction industry, for example as aggregate for insulation plaster.