公开(公告)号：US3642974A

公开(公告)日：1972-02-15

申请号：US3642974D

申请日：1970-07-02

Applicant: BASF AG

Inventor： JACOBI HANS-RUDOLF ,  HAUSER ABEL ,  HOFFMANN MANFRED

IPC: B29C39/00 ,  B29C39/40 ,  C08G69/18 ,  B29G1/00

CPC classification number: C08G69/18 ,  B29C39/006 ,  B29C39/40 ,  B29K2077/00 ,  B29K2105/0002

Abstract: A PROCESS FOR THE MANUFACTURE OF POLYAMIDE MOLDINGS BY ACTIVATED ANIONIC POLYMERIZATION OF LACTAMS IN A COMPRESSION MOLD HEATED TO THE TEMPERATURE OF POLYMERIZATION AND PROVIDED WITH A PLUNGER, THE PROCESS COMPRISING CHARGING THE MOLD WITH A MELT OF LACTAM, ACTIVATOR AND CATALYST IN AN AMOUNT SUCH AS IN REQUIRED FOR THE PRODUCTION OF THE MOLDING, IMMERSING THE PLUNGER IN THE MELT SO THAT THE LATTER COMPLETELY FILLS THE MOLD, COMPENSATING FOR

CONTRACTION OF THE MELT DURING POLYMERIZATION BY ADVANCING THE PLUNGER WITHOUT APPLYING PRESSURE TO THE MELT, AND, WHEN NO FURTHER CONTRACTION TAKES PLACE, CLOSING THE MOLD UNDER PRESSURE AND THUS GIVING THE POLYMER ITS FINAL SHAPE.

公开(公告)号：CH608815A5

公开(公告)日：1979-01-31

申请号：CH1402474

申请日：1974-10-18

Applicant: BASF AG

Inventor： SANDER BRUNO DR ,  BONITZ ECKHARD DR ,  BERGNER HEINZ ,  HOFFMANN MANFRED

IPC: C08G20060101 ,  C08J3/02 ,  C08J3/03 ,  C08J5/02 ,  C08L23/02 ,  C09K23/00 ,  D01F20060101 ,  D01F6/04 ,  D01F11/06 ,  D04H1/42 ,  C08J3/06 ,  D21H5/20

Abstract: 1466601 Paper BASF AG 17 Oct 1974 [18 Oct 1973] 44967/74 Heading D2B [Also in Division C3] Paper-like products may be prepared from aqueous suspensions of polyolefin fibrids prepared in the presence of a dispersing agent which comprises 0.1 to 2 per cent by weight of the fibrids of an anionic protective colloid. The suspensions may also contain cellulose fibres. Examples describe the preparation of paper-like products from aqueous suspensions of equal weights of sulphite cellulose fibres and polyethylene fibrids prepared using urea/formaldehyde/sodium phenol sulphonate polycondensate, urea/formaldehyde polycondensate modified with sodium bisulphite, sodium salt of carboxymethyl cellulose, ammonium salt of maleic acid/vinyl isobutyl ether copolymer or ammonium salt of acrylic acid/styrene copolyer; and from 70/30 50/50 and 30/70 mixtures using the above protective colloids or formaldehyde/sodium #-naphthalene sulphonate condensate.

公开(公告)号：CA1039427A

公开(公告)日：1978-09-26

申请号：CA208302

申请日：1974-09-03

Applicant: BASF AG

Inventor： SANDER BRUNO ,  BERBNER HEINZ ,  HOFFMANN MANFRED

IPC: D06P1/642 ,  C08J3/02 ,  C08L23/02 ,  D06P1/647 ,  D06P1/649 ,  D21H17/51 ,  D01F1/00 ,  D21B1/00 ,  D21H3/40

Abstract: A process for the manufacture of non-foaming aqueous suspensions of polyolefin fibrids using suitable dispersing agents. These are obtained by polycondensation of 1 mole of melamine, from 1.8 to 3 moles of formaldehyde and from 0.1 to 0.5 molar portions of amino carboxylic acids or alkali metal salts thereof. Very small quantities of said dispersing agents are sufficient to finely disperse the hydrophobic polyolefin fibrids in water and to prevent the formation of foam in the manufacture of web structures of a paper-like and textile-like nature. The aqueous suspensions of polyolefin fibrids may also contain cellulose fibers.

公开(公告)号：CA1052025A

公开(公告)日：1979-04-03

申请号：CA211647

申请日：1974-10-17

Applicant: BASF AG

Inventor： SANDER BRUNO ,  BONITZ ECKHARD ,  BERBNER HEINZ ,  HOFFMANN MANFRED

IPC: C08G20060101 ,  C08J3/02 ,  C08J3/03 ,  C08J5/02 ,  C08L23/02 ,  C09K23/00 ,  D01F20060101 ,  D01F6/04 ,  D01F11/06 ,  D04H1/42 ,  B01F17/00 ,  D21H5/12

Abstract: Aqueous suspensions of polyethylene and polypropylene fibrids having a surface area of from 1 to 150 m2/g are prepared. To avoid foam formation and improve fiber-bonding, small amounts of anionic agents are added to the suspensions. The suspensions are suitable for the manufacture of paper-like or textile-like web structures distinguished by very good fiber bonding and good initial wet strength.

公开(公告)号：DE2346081A1

公开(公告)日：1975-04-24

申请号：DE2346081

申请日：1973-09-13

Applicant: BASF AG

Inventor： SANDER BRUNO DIPL CHEM DR ,  BERBNER HEINZ ,  HOFFMANN MANFRED

IPC: D06P1/642 ,  C08J3/02 ,  C08L23/02 ,  D06P1/647 ,  D06P1/649 ,  D21H17/51 ,  C08L23/00 ,  D21H5/00

Abstract: A process for the manufacture of nonfoaming aqueous suspensions of polyolefin fibrids using suitable dispersing agents. These are obtained by polycondensation of 1 mole of melamine, from 1.8 to 3 moles of formaldehyde and from 0.1 to 0.5 molar portions of amino carboxylic acids or alkali metal salts thereof. Very small quantities of said dispersing agents are sufficient to finely disperse the hydrophobic polyolefin fibrids in water and to prevent the formation of foam in the manufacture of web structures of a paper-like and textile-like nature. The aqueous suspensions of polyolefin fibrids may also contain cellulose fibers.

公开(公告)号：DE2352190A1

公开(公告)日：1975-04-30

申请号：DE2352190

申请日：1973-10-18

Applicant: BASF AG

Inventor： BERBNER HEINZ ,  HOFFMANN MANFRED ,  SANDER BRUNO DIPL-CHEM DR ,  BONITZ ECKHARD DIPL-CHEM DR

IPC: C08G20060101 ,  C08J3/02 ,  C08J3/03 ,  C08J5/02 ,  C08L23/02 ,  C09K23/00 ,  D01F20060101 ,  D01F6/04 ,  D01F11/06 ,  D04H1/42

Abstract: 1466601 Paper BASF AG 17 Oct 1974 [18 Oct 1973] 44967/74 Heading D2B [Also in Division C3] Paper-like products may be prepared from aqueous suspensions of polyolefin fibrids prepared in the presence of a dispersing agent which comprises 0.1 to 2 per cent by weight of the fibrids of an anionic protective colloid. The suspensions may also contain cellulose fibres. Examples describe the preparation of paper-like products from aqueous suspensions of equal weights of sulphite cellulose fibres and polyethylene fibrids prepared using urea/formaldehyde/sodium phenol sulphonate polycondensate, urea/formaldehyde polycondensate modified with sodium bisulphite, sodium salt of carboxymethyl cellulose, ammonium salt of maleic acid/vinyl isobutyl ether copolymer or ammonium salt of acrylic acid/styrene copolyer; and from 70/30 50/50 and 30/70 mixtures using the above protective colloids or formaldehyde/sodium #-naphthalene sulphonate condensate.

公开(公告)号：DE1942992A1

公开(公告)日：1970-05-06

申请号：DE1942992

申请日：1969-08-23

Applicant: BASF AG

Inventor： HANS-RUDOLF JACOBI DR-ING ,  ROLF SCHELLENBERG DR-ING ,  HOFFMANN MANFRED ,  ABEL HAUSER DIPL-ING

IPC: B29C31/04 ,  B29C45/00 ,  C08G69/18 ,  C08G20/18

公开(公告)号：DE1934305A1

公开(公告)日：1971-01-21

申请号：DE1934305

申请日：1969-07-07

Applicant: BASF AG

Inventor： HANS-RUDOLF JACOBI DR-ING ,  HOFFMANN MANFRED ,  ABEL HAUSER DIPL-ING

IPC: B29C39/00 ,  B29C39/40 ,  C08G69/18 ,  C08G20/18