公开(公告)号：DE59401868D1

公开(公告)日：1997-04-03

申请号：DE59401868

申请日：1994-06-27

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  KROENER MICHAEL ,  NILZ CLAUDIA

IPC: C08F6/00 ,  C08F6/16 ,  C08F8/06 ,  C08F8/12 ,  C08F6/10 ,  C08F26/02 ,  D21H21/10

Abstract: PCT No. PCT/EP94/02082 Sec. 371 Date Jan. 11, 1996 Sec. 102(e) Date Jan. 11, 1996 PCT Filed Jun. 27, 1994 PCT Pub. No. WO95/02615 PCT Pub. Date Jan. 26, 1995Nitrile impurities are eliminated from polymers which contain acyclic N-vinyl-carboxamide and/or vinylamine units by treating the polymers with at least one oxidizing agent a) with exposure to light and/or b) in the presence of heavy metal ions.

公开(公告)号：AT149179T

公开(公告)日：1997-03-15

申请号：AT94920465

申请日：1994-06-27

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  KROENER MICHAEL ,  NILZ CLAUDIA

IPC: C08F6/10 ,  C08F6/00 ,  C08F6/16 ,  C08F8/06 ,  C08F8/12 ,  C08F26/02 ,  D21H21/10

Abstract: PCT No. PCT/EP94/02082 Sec. 371 Date Jan. 11, 1996 Sec. 102(e) Date Jan. 11, 1996 PCT Filed Jun. 27, 1994 PCT Pub. No. WO95/02615 PCT Pub. Date Jan. 26, 1995Nitrile impurities are eliminated from polymers which contain acyclic N-vinyl-carboxamide and/or vinylamine units by treating the polymers with at least one oxidizing agent a) with exposure to light and/or b) in the presence of heavy metal ions.

公开(公告)号：ES2096437T3

公开(公告)日：1997-03-01

申请号：ES94900084

申请日：1993-10-29

Applicant: BASF AG

Inventor： HARTMANN HEINRICH ,  DENZINGER WALTER ,  KROENER MICHAEL ,  NILZ CLAUDIA

IPC: C08F8/00 ,  B01D15/04 ,  B01J20/26 ,  B01J39/20 ,  C08F226/02

Abstract: PCT No. PCT/EP93/03019 Sec. 371 Date Apr. 25, 1995 Sec. 102(e) Date Apr. 25, 1995 PCT Filed Oct. 29, 1993 PCT Pub. No. WO94/11408 PCT Pub. Date May 26, 1994Abstract of the Disclosure: Insoluble, only slightly swellable polymers containing amino groups, which can be obtained from popcorn polymers containing units of the structure (I) where R and R1 are H or C1-C4-alkyl, by eliminating the group R-CO- from at least 2% of the incorporated units of the structure I, with the formation of units of the structure II (II) a process for the preparation of the amino-containing popcorn polymers by polymerizing N-vinylcarboxamides and, if desired, other monoethylenically unsaturated monomers copolymerizable therewith with from 0.1 to 10% by weight, based on the monomers used in the polymerization, of a compound containing at least two ethylenically unsaturated non-conjugated double bonds as crosslinking agent, with exclusion of oxygen and polymerization initiators, to form popcorn polymers, and elimination of formyl groups from at least 2% of the copolymerized N-vinylcarboxamides, and the use of the resulting insoluble, only slightly swellable polymers containing amino groups as ion exchangers or adsorber resins for metal ions are described.

公开(公告)号：DE59302953D1

公开(公告)日：1996-07-18

申请号：DE59302953

申请日：1993-11-25

Applicant: BASF AG

Inventor： NILZ CLAUDIA ,  DENZINGER WALTER ,  HARTMANN HEINRICH ,  KROENER MICHAEL ,  LINHART FRIEDRICH ,  SCHUHMACHER RUDOLF ,  MOENCH DIETMAR ,  STANGE ANDREAS

IPC: C08F220/04 ,  C08F8/12 ,  C08F26/00 ,  C08F226/02 ,  D21H17/34 ,  D21H17/37 ,  D21H17/43 ,  D21H17/45 ,  D21H21/10 ,  D21H21/18

公开(公告)号：FI92083C

公开(公告)日：1994-09-26

申请号：FI883504

申请日：1988-07-25

Applicant: BASF AG

Inventor： STANGE ANDREAS ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  WEBERNDOERFER VOLKMAR ,  KROENER MICHAEL ,  HARTMANN HEINRICH

IPC: D21H17/34 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18

公开(公告)号：DK168640B1

公开(公告)日：1994-05-09

申请号：DK101788

申请日：1988-02-26

Applicant: BASF AG

Inventor： DEGEN HANS-JUERGEN ,  PFOHL SIGBERG ,  WEBERNDOERFER VOLKMAR ,  REHMER GERD ,  KROENER MICHAEL ,  STANGE ANDREAS

IPC: D21H17/34 ,  D21H17/28 ,  D21H17/29 ,  D21H17/37 ,  D21H17/45 ,  D21H17/56 ,  D21H21/18 ,  D21H21/00

Abstract: Paper and paperboard of high dry strength are produced by adding a dry strength enhancer to the paper stock and dewatering the paper stock with sheet formation by using as the dry strength enhancer a mixture of a cationic polymer which contains as characteristic monomers copolymerized units of (a) diallyldimethylammonium chloride, (b) N-vinylamine or (c) a substituted or unsubstituted N-vinylimidazoline and has a K value of not less than 30, and natural potato starch which is converted into a water-soluble form by heating in an aqueous medium at above the gelatinization temperature of natural potato starch in the absence of any oxidizing agents or alkali.

公开(公告)号：FI90084C

公开(公告)日：1993-12-27

申请号：FI863755

申请日：1986-09-17

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  DENZINGER WALTER

IPC: C08F8/12 ,  C08F16/16 ,  C08F18/02 ,  C08F20/52 ,  C08F26/00 ,  C08F26/06 ,  C08F216/16 ,  C08F216/18 ,  C08F218/02 ,  C08F218/04 ,  C08F218/08 ,  C08F218/10 ,  C08F220/00 ,  C08F220/02 ,  C08F220/10 ,  C08F220/18 ,  C08F220/42 ,  C08F220/56 ,  C08F226/02 ,  C08F226/10 ,  D21H17/34 ,  D21H17/36 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18

公开(公告)号：FI90084B

公开(公告)日：1993-09-15

申请号：FI863755

申请日：1986-09-17

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  DENZINGER WALTER

IPC: C08F8/12 ,  C08F16/16 ,  C08F18/02 ,  C08F20/52 ,  C08F26/00 ,  C08F26/06 ,  C08F216/16 ,  C08F216/18 ,  C08F218/02 ,  C08F218/04 ,  C08F218/08 ,  C08F218/10 ,  C08F220/00 ,  C08F220/02 ,  C08F220/10 ,  C08F220/18 ,  C08F220/42 ,  C08F220/56 ,  C08F226/02 ,  C08F226/10 ,  D21H17/34 ,  D21H17/36 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18

Abstract: Water-soluble copolymers containing copolymerized vinylamine units are prepared by copolymerizing (a) from 95 to 10 mol % of N-vinylformamide and (b) from 5 to 90 mol % of an ethylenically unsaturated monomer from the group consisting of vinyl acetate, vinyl propionate, C1-C4-alkyl vinyl ethers, the esters, nitriles and amides of acrylic acid and methacrylic acid and N-vinylpyrrolidone, and then eliminating from 30 to 100 mol % of the formyl groups from the copolymer. Preferred copolymers are copolymers of N-vinylformamide and vinyl acetate, in which from 30 to 100 mol % of the monomer units are hydrolyzed. The copolymers are used in papermaking to increase the dry strength and wet strength of the paper.

公开(公告)号：DE3687615D1

公开(公告)日：1993-03-11

申请号：DE3687615

申请日：1986-09-25

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  DENZINGER WALTER

IPC: C08F8/12 ,  C08F16/16 ,  C08F18/02 ,  C08F20/52 ,  C08F26/00 ,  C08F26/06 ,  C08F216/16 ,  C08F216/18 ,  C08F218/02 ,  C08F218/04 ,  C08F218/08 ,  C08F218/10 ,  C08F220/00 ,  C08F220/02 ,  C08F220/10 ,  C08F220/18 ,  C08F220/42 ,  C08F220/56 ,  C08F226/02 ,  C08F226/10 ,  D21H17/34 ,  D21H17/36 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18

Abstract: Water-sol. polymers (I) contg. vinylamine units are prepd. by copolymerisation of 95-10 mol.% N-vinylformamide (II) with 5-90 mol.% unsatd. comonomer (III), followed by cleavage of 30-100 (pref. 70-95)% of the formyl gps. (III) is vinyl acetate or propiona propionate, 1-4C alkyl vinyl ether, N-vinylpyrrolidone, or (meth)acrylic ester, nitrile or amide. (I) are claimed, as obtd. by copolymerisation of (II) and vinyl acetate (IV) or propionate, cleavage of formyl gps. as above, and then cleavage of 30-100 (pref. 70-95) mol.% of the acetate or propionate gps. (I) are produced by known radical polymerisation processes, with acid- or alkaline-cleavage of acyl gps.

公开(公告)号：NO171173C

公开(公告)日：1993-02-03

申请号：NO880856

申请日：1988-02-26

Applicant: BASF AG

Inventor： DEGEN HANS-JUERGEN ,  PFOHL SIGBERG ,  WEBERNDOERFER VOLKMAR ,  REHMER GERD ,  KROENER MICHAEL ,  STANGE ANDREAS

IPC: D21H17/34 ,  D21H17/28 ,  D21H17/29 ,  D21H17/37 ,  D21H17/45 ,  D21H17/56 ,  D21H21/18 ,  D21H21/10

Abstract: Paper and paperboard of high dry strength are produced by adding a dry strength enhancer to the paper stock and dewatering the paper stock with sheet formation by using as the dry strength enhancer a mixture of a cationic polymer which contains as characteristic monomers copolymerized units of (a) diallyldimethylammonium chloride, (b) N-vinylamine or (c) a substituted or unsubstituted N-vinylimidazoline and has a K value of not less than 30, and natural potato starch which is converted into a water-soluble form by heating in an aqueous medium at above the gelatinization temperature of natural potato starch in the absence of any oxidizing agents or alkali.