公开(公告)号：DE59104401D1

公开(公告)日：1995-03-09

申请号：DE59104401

申请日：1991-11-11

Applicant: BASF AG

Inventor： GOERTZ HANS-HELMUT DR ,  HATZMANN GUENTER DR ,  OSCHMANN WERNER DR

IPC: C08F285/00 ,  C08L27/00 ,  C08L57/08

公开(公告)号：DE4037236A1

公开(公告)日：1992-05-27

申请号：DE4037236

申请日：1990-11-23

Applicant: BASF AG

Inventor： GOERTZ HANS-HELMUT DR ,  HATZMANN GUENTER DR ,  OSCHMANN WERNER DR

IPC: C08F285/00 ,  C08L27/00 ,  C08L57/08

公开(公告)号：DE4125477A1

公开(公告)日：1992-02-13

申请号：DE4125477

申请日：1991-08-01

Applicant: BASF AG

Inventor： GOERTZ HANS-HELMUT DR ,  HUNGENBERG KLAUS-DIETER DR ,  HATZMANN GUENTER DR ,  OSCHMANN WERNER DR

IPC: C08F265/06 ,  C08L27/02

Abstract: Polyvinylhalide resin compsns. contain 0.1-20 wt%, based on the mixt. of polyvinylhalides, of a two stage emulsion polymer of (a) 5-80 wt% of a first stage of (i) 80-99.5 wt% methylmethacrylate (MMA); (ii) 0.5-9.9 wt% of a 1-18C alkyl acrylate (AA); and (ii) 0-1.1 wt% other comonomers; and (b) 20-50 wt% of a second stage of (i) 70-90 wt% MMA; (ii) 10-30 wt% of a 1-18C AA; and (iii) 0-20 wt% other comonomers. Moulded prods. made from the above compsns. are also claimed. USE/ADVANTAGE - Used as processing aids in polyvinylhalide resin compsns. (claimed). Lower gel and plastification times are achieved, leading to faster and more economical processing.

公开(公告)号：DE3938877A1

公开(公告)日：1991-05-29

申请号：DE3938877

申请日：1989-11-24

Applicant: BASF AG

Inventor： GOERTZ HANS-HELMUT DR ,  HUNGENBERG KLAUS-DIETER DR ,  PITSCHMANN PETER DR ,  HATZMANN GUENTER DR ,  OSCHMANN WERNER DR

IPC: C08F2/22 ,  C08F6/00 ,  C08F291/00 ,  C08L27/06 ,  C08L51/04

Abstract: Process for prodn. of a graft copolymer (I) with residual monomer content below 30 ppm comprises (a) prodn. of the graft copolymer by emulsion polymerisation in the usual way, (b) spray drying the prod. to give a powder with d50 100-300 microns and (c) extracting the powder with supercritical CO2 at 31-100 deg.C and 73-350 bar. (I) is e.g. a copolymer with styrene, alpha-methylstyrene, acrylonitrile or 1-12C alkyl (meth)acrylate grafted onto a SB rubber or polyacrylate base; pref. powder has d50a 100-150 microns and is extd. with CO2 at 31-50 deg.C and 79-150 bar. USE/ADVANTAGE - (I) is useful as a modifier for PVC (claimed). In the packaging applications for which such PVC is suitable (bottles for mineral water, etc.), the highly pure (I) is partic. useful as an impact modifier since it has no adverse effect on the taste of the contents.

公开(公告)号：DE2160520A1

公开(公告)日：1973-06-28

申请号：DE2160520

申请日：1971-12-07

Applicant: BASF AG

Inventor： HERNER MARTIN DR ,  MUELLER GUENTER ,  HATZMANN GUENTER DR

IPC: B29C43/24 ,  B29D7/14

公开(公告)号：DE2145025A1

公开(公告)日：1973-03-22

申请号：DE2145025

申请日：1971-09-09

Applicant: BASF AG

Inventor： HERNER MARTIN DR ,  HATZMANN GUENTER DR ,  MUELLER GUENTER

IPC: B29C44/30 ,  B29C44/34 ,  C08J1/36

Abstract: The film consists of two layers one of which is foamed and the other not foamed or only rel. slightly foamed. It is more solvent-resistant and flame-resistant than the equiv. polystyrene laminated films.