公开(公告)号：ES2078988T3

公开(公告)日：1996-01-01

申请号：ES91106672

申请日：1991-04-25

Applicant: BASF AG

Inventor： WITTENBERG DIETMAR DR ,  HAHN KLAUS DR ,  GUHR UWE DR ,  HINTZ HANS DR ,  O'CALLAGHAN MICHAEL P DR ,  RIETHUES MICHAEL DR

IPC: C08F2/44 ,  C08F2/18 ,  C08J9/00 ,  C08J9/16 ,  C08K5/00 ,  C08K5/01 ,  C08K5/05 ,  C08K5/06 ,  C08K5/36 ,  C08K5/41 ,  C08L25/04 ,  C08L33/00

Abstract: Expandable styrene polymers containing …… a) a styrene polymer, … b) from 0.05 to 3 % by weight, based on a), of water, … c) from 0.001 to 1 % by weight, based on a), of a finely divided organic polymer having a water-absorption capacity of at least 10 g/g, … d) from 0.5 to 8 % by weight, based on a), of a C3- to C6-hydrocarbon, and optionally … e) conventional additives in effective amounts, … are distinguished by good flow properties and a low degree of clumping during prefoaming.

公开(公告)号：DE59008132D1

公开(公告)日：1995-02-09

申请号：DE59008132

申请日：1990-10-24

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：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：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：AT152155T

公开(公告)日：1997-05-15

申请号：AT90117727

申请日：1990-09-14

Applicant: BASF AG

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

IPC: C08J9/14 ,  C08F2/18 ,  C08F2/38 ,  C08F2/44 ,  C08J9/00 ,  C08J9/16 ,  C08J9/20 ,  C08J9/232 ,  C08L25/04 ,  C08L51/08

Abstract: Expandable styrene polymers containing a) 80 to 99% by weight of polystyrene, b) 1 to 20% by weight of a styrene-soluble polymer having a softening temperature above 140 DEG C, c) 3 to 10% by weight, based on the sum of a) and b), of a C3- to C6-hydrocarbon as a blowing agent, and optionally d) conventional additives, in which the mixture of components a) and b) has a melt flow index MFI 200/5 of between 15 and 30, are distinguished by high heat distortion resistance and good expandability.

公开(公告)号：DE59206654D1

公开(公告)日：1996-08-01

申请号：DE59206654

申请日：1992-10-31

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  KAEMPFER KNUT DR ,  HINTZ HANS DR ,  SCHAEFER ANTHONY DR ,  RIETHUES MICHAEL DR ,  WITT MICHAEL DR

IPC: C08J9/12 ,  C08J9/00 ,  C08J9/16 ,  C08J9/18 ,  C08K5/00 ,  C08K5/05 ,  C08K5/06 ,  C08K5/17 ,  C08L25/04 ,  C08L71/00 ,  C08L71/02

Abstract: The invention relates to expandable styrene polymers containing a) a styrene polymer, b) and at least one carbon dioxide absorber, mixed or copolymerized with the above, in an amount of from 0.01 to 50% by weight, based on the sum of a) and b), and c) a blowing agent or blowing agent mixture in an amount of from 0.5 to 12% by weight, where the blowing agent or blowing agent mixture comprises c1) from 10 to 100% by weight of carbon dioxide and c2) from 0 to 90% by weight of at least one further blowing agent. The invention furthermore relates to the styrene polymers containing a carbon dioxide absorber, to the styrene polymer foams obtainable from the expandable styrene polymers, and to an improved process for impregnating styrene polymers with carbon dioxide-containing blowing agents or blowing agent mixtures.