公开(公告)号：DE3513144A1

公开(公告)日：1985-10-24

申请号：DE3513144

申请日：1985-04-12

Applicant: BASF AG

Inventor： PFIRRMANN GUENTHER DR ,  SCHWIEGK LOTHAR DR ,  ZETTL ALEXANDER

IPC: B05D7/02 ,  B29C49/00

Abstract: The invention relates to a process for reducing the permeation of blow-moulded hollow bodies made of thermoplastics, in particular of high molecular weight HDPE, in which the hollow body surfaces are flame-treated by means of a gas flame or are subjected to the effect of an electrical discharge in a gaseous atmosphere and subsequently, in a special operation, coated with a coating composition which is permeable only to a slight extent, if at all, to the filling material and/or the medium surrounding the hollow body. The coating material used are moisture-curing polyurethane prepolymers containing approximately 10 to approximately 90% by weight of fillers, homogeneously distributed. The fillers can also be applied in the form of an additional layer subsequently during the curing phase of the polyurethane prepolymers. The hollow bodies thus treated are suitable for storing hydrocarbon mixtures.

公开(公告)号：DE3643415C2

公开(公告)日：1995-04-06

申请号：DE3643415

申请日：1986-12-19

Applicant: BASF AG

Inventor： HAUSZ ALFRED FRIEDRICH DR ,  PFIRRMANN GUENTHER DR ,  ZEITLER GERHARD DR

IPC: C08J3/24 ,  C08J7/12 ,  C08L23/06

公开(公告)号：DE3643415A1

公开(公告)日：1988-06-30

申请号：DE3643415

申请日：1986-12-19

Applicant: BASF AG

Inventor： HAUSZ ALFRED FRIEDRICH DR ,  PFIRRMANN GUENTHER DR ,  ZEITLER GERHARD DR

IPC: C08J3/24 ,  C08J7/12 ,  C08L23/06

Abstract: In order to improve the resistance to the formation of stress cracks in hollow elements made from thermoplastics, the surfaces of the hollow elements are nitrosochlorinated and subsequently thermally crosslinked. The nitrosochlorination can be carried out either in the gas phase or in suspension and is preferably initiated photochemically.

公开(公告)号：DE3434317A1

公开(公告)日：1986-03-27

申请号：DE3434317

申请日：1984-09-19

Applicant: BASF AG

Inventor： PFIRRMANN GUENTHER DR ,  KAST HANS DR ,  SCHWIEGK LOTHAR DR ,  BRANDSTETTER FRANZ DR

IPC: B05D3/08 ,  B05D3/14 ,  B05D7/22 ,  B29C49/00 ,  B29C59/08 ,  B29C59/12 ,  C08J7/04 ,  C09D7/12 ,  B29C71/00

公开(公告)号：DE2254261A1

公开(公告)日：1974-05-22

申请号：DE2254261

申请日：1972-11-06

Applicant: BASF AG

Inventor： GLASER RUDOLF DR ,  MOORWESSEL DIETER DR ,  PFIRRMANN GUENTHER DR ,  OSCHMANN WERNER DR ,  NOETZEL WOLFRAM DR

IPC: C08L23/00 ,  C08K3/22 ,  C08K5/01 ,  C08K5/02 ,  C08K5/09 ,  C08K13/02 ,  C08L101/00 ,  D01F6/46 ,  C08F37/16

公开(公告)号：DE59307566D1

公开(公告)日：1997-11-27

申请号：DE59307566

申请日：1993-11-25

Applicant: BASF AG

Inventor： PFIRRMANN GUENTHER DR ,  BOES DIETER ,  PAATZ RUDOLF DR

IPC: C08J3/22 ,  C08K5/134 ,  C08K5/52 ,  C08K5/5333 ,  C08K5/5393

Abstract: A process for stabilising polyethylene grit, in which the latter is treated with a sterically hindered phenol and an ester of phosphorous or hypophosphorous acid, characterised in that the polyethylene grit is mixed with the sterically hindered phenol in liquid, molten form and with the ester of phosphorous or hypophosphorous acid within a ground polyolefin matrix in which the ester has been incorporated, and the polyolefin matrix is compatible with the polyethylene grit.

公开(公告)号：DE3571628D1

公开(公告)日：1989-08-24

申请号：DE3571628

申请日：1985-09-14

Applicant: BASF AG

Inventor： PFIRRMANN GUENTHER DR ,  KAST HANS DR ,  SCHWIEGK LOTHAR DR ,  BRANDSTETTER FRANZ DR

IPC: B05D3/08 ,  B05D3/14 ,  B05D7/22 ,  B29C49/00 ,  B29C59/08 ,  B29C59/12 ,  C08J7/04 ,  C09D7/12 ,  C09D3/74

公开(公告)号：CH613219A5

公开(公告)日：1979-09-14

申请号：CH1106775

申请日：1975-08-26

Applicant: BASF AG

Inventor： MOORWESSEL DIETER DR ,  GLASER RUDOLF DR ,  PFIRRMANN GUENTHER DR ,  KONOPKA RUDOLF

IPC: C08L23/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/08 ,  C08L31/04 ,  C08L33/00 ,  C08L33/02 ,  C08L95/00 ,  C08L101/00 ,  C09K3/10 ,  E04F15/16

公开(公告)号：DE4240694A1

公开(公告)日：1994-06-09

申请号：DE4240694

申请日：1992-12-03

Applicant: BASF AG

Inventor： PFIRRMANN GUENTHER DR ,  BOES DIETER ,  PAATZ RUDOLF DR

IPC: C08J3/22 ,  C08K5/134 ,  C08K5/52 ,  C08K5/5333 ,  C08K5/5393 ,  C08L23/06 ,  C08K5/13 ,  C08K5/524 ,  C08K5/5313 ,  C09K15/08 ,  C09K15/32

Abstract: A process for stabilising polyethylene grit, in which the latter is treated with a sterically hindered phenol and an ester of phosphorous or hypophosphorous acid, characterised in that the polyethylene grit is mixed with the sterically hindered phenol in liquid, molten form and with the ester of phosphorous or hypophosphorous acid within a ground polyolefin matrix in which the ester has been incorporated, and the polyolefin matrix is compatible with the polyethylene grit.

公开(公告)号：DE2058775A1

公开(公告)日：1972-05-31

申请号：DE2058775

申请日：1970-11-30

Applicant: BASF AG

Inventor： MERKEL HELMUT DR ,  PFIRRMANN GUENTHER DR ,  GEORGII BENEDIKT ,  ZEITLER GERHARD DR

IPC: C08J9/36 ,  C08F27/03

Abstract: Sinter absorbent article is produced by treating sintered polymer powder with halogens. Prod. can absorb liquids, esp., water. The halogens should be diluted with inert gas to prevent excessive temp. rise and the reaction is pref. carried out in the dark. Treatment is suitable for all thermoplastic filter candles, esp., of polyethylene, polypropylene and polystyrene and also halogenated polymers, esp., PVC.