公开(公告)号：ES2058663T3

公开(公告)日：1994-11-01

申请号：ES90108204

申请日：1990-04-30

Applicant: BASF AG

Inventor： WITTENBERG DIETMAR DR ,  HAHN KLAUS DR ,  GUHR UWE DR ,  HINTZ HANS DR

IPC: C08F2/18 ,  C08F283/00 ,  C08F291/02 ,  C08J9/16 ,  C08J9/18 ,  C08J9/20 ,  C08L51/04

Abstract: Expandable styrene polymers comprising a) from 50 to 98% by weight of polystyrene and b) from 2 to 50% by weight of a styrene-soluble elastomer and possibly also containing from 1 to 15% by weight, based on the sum of a) and b), of a low-boiling blowing agent and optionally conventional additives are expanded to give foams having a density of from 0.01 to 0.1 g/cm and increased elasticity. They can be prepared by suspension polymerisation of a styrene solution of the elastomer and addition of a blowing agent.

公开(公告)号：ES2051389T3

公开(公告)日：1994-06-16

申请号：ES90100614

申请日：1990-01-12

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  GUHR UWE DR ,  HINTZ HANS DR ,  GELLERT ROLAND DR

IPC: C08F2/18 ,  C08F2/44 ,  C08F257/02 ,  C08J9/00 ,  C08J9/14 ,  C08J9/16 ,  C08J9/20 ,  C08L51/00

公开(公告)号：DE59005657D1

公开(公告)日：1994-06-16

申请号：DE59005657

申请日：1990-02-03

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  GUHR UWE DR ,  HINTZ HANS DR ,  GELLERT ROLAND DR

IPC: C08J9/14 ,  C08F2/18 ,  C08F2/44 ,  C08J9/00 ,  C08J9/16 ,  C08J9/20 ,  C08L25/04

Abstract: Bead-form expandable moulding compositions of high heat resistance contain from 80 to 99 % by weight of a styrene polymer, from 1 to 20 % by weight of poly(2,6-dimethyl)-1,4-diphenyl ether, from 3 to 10 % by weight of a C3-C6-hydrocarbon as blowing agent and optionally conventional additives. They are obtained by suspension polymerisation of a solution of the polyphenylene ether in styrene.

公开(公告)号：DE58900766D1

公开(公告)日：1992-03-05

申请号：DE58900766

申请日：1989-12-19

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  GUHR UWE DR ,  NAARMANN HERBERT DR ,  RUPPERT GEORG ,  BACK WOLF-DIETER DR ,  DEMBEK GERHARD DR

IPC: B29B9/06 ,  B29C44/34 ,  B29C69/00 ,  C08J9/00 ,  C08J9/16 ,  C08K5/00 ,  C08K5/01 ,  C08K5/02 ,  C08L25/06 ,  B29C67/22

公开(公告)号：AT71876T

公开(公告)日：1992-02-15

申请号：AT89123419

申请日：1989-12-19

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  GUHR UWE DR ,  NAARMANN HERBERT DR ,  RUPPERT GEORG ,  BACK WOLF-DIETER DR ,  DEMBEK GERHARD DR

IPC: B29B9/06 ,  B29C44/34 ,  B29C69/00 ,  C08J9/00 ,  C08J9/16 ,  C08K5/00 ,  C08K5/01 ,  C08K5/02 ,  C08L25/06 ,  B29C67/22

公开(公告)号：DE3936595A1

公开(公告)日：1991-05-08

申请号：DE3936595

申请日：1989-11-03

Applicant: BASF AG

Inventor： HINTZ HANS DR ,  GUHR UWE DR ,  HAHN KLAUS DR

IPC: C08J9/14 ,  C08F2/18 ,  C08F2/20 ,  C08F2/44 ,  C08F12/08 ,  C08F212/00 ,  C08J9/18 ,  C08J9/20

Abstract: In the preparation of expandable styrene polymers by polymerizing styrene, if desired together with up to 50% by weight of other monomers, in aqueous suspension with addition of a C3- to C6-hydrocarbon as blowing agent and, if desired, conventional additives in effective amounts before, during or after the polymerization, foaming is reduced if the aqueous phase contains from 0.05 to 0.3% by weight of polyvinylpyrrolidone having a K value of from 100 to 150 as protective colloid.

公开(公告)号：DE3921147A1

公开(公告)日：1991-01-10

申请号：DE3921147

申请日：1989-06-28

Applicant: BASF AG

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

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：DE3908238A1

公开(公告)日：1990-09-20

申请号：DE3908238

申请日：1989-03-14

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  GUHR UWE DR ,  HINTZ HANS DR

IPC: C08F2/18 ,  C08F257/02 ,  C08J9/14 ,  C08J9/16 ,  C08J9/18 ,  C08J9/20 ,  C08L51/00

Abstract: Expandable styrene polymers of from 95 to 99.5% by weight of polystyrene and from 0.15 to 5% by weight of a styrene-soluble styrene/acrylonitrile copolymer having a total content of not less than 0.15% by weight of acrylonitrile, which contain from 3 to 10% by weight of a C3-C6-hydrocarbon and may contain conventional additives, give foams which do not shrink. The said styrene polymers can be prepared by suspension polymerization of a solution of the styrene/acrylonitrile copolymer in styrene.

公开(公告)号：DE3843537A1

公开(公告)日：1990-06-28

申请号：DE3843537

申请日：1988-12-23

Applicant: BASF AG

Inventor： WEBER REINHOLD ,  HAHN KLAUS DR ,  GUHR UWE DR ,  GRAVE ISIDOOR DE DR ,  NAARMANN HERBERT DR ,  ALICKE GERHARD ,  WEILBACHER MANFRED DR

IPC: B29C47/00 ,  B29K25/00 ,  B29L7/00 ,  C08J9/14 ,  C08K5/01 ,  C08K5/02

公开(公告)号：DE3842305A1

公开(公告)日：1990-06-21

申请号：DE3842305

申请日：1988-12-16

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  GUHR UWE DR ,  GELLERT ROLAND DR ,  BACK WOLF-DIETER DR

IPC: C08J9/16 ,  C08J9/12 ,  C08J9/20 ,  C08J9/228 ,  C08L25/06 ,  C09K23/42

Abstract: Polystyrene foam particles having a density of 10 to 30 kg/m are obtained when styrene polymers containing 0.7 to 3 mol/kg of a blowing agent mixture comprising 60 to 90 mol% of water and 10 to 40 mol% of a C4- to C5-hydrocarbon are foamed using microwaves.