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1. (WO1997004014) GRAFT POLYMERS FROM POLYMERS CONTAINING VINYL ESTER AND/OR VINYL ALCOHOL UNITS AND ETHYLENICALLY UNSATURATED COMPOUNDS, PROCESS FOR THEIR PRODUCTION AND THEIR USE

Pub. No.:    WO/1997/004014    International Application No.:    PCT/EP1996/002991
Publication Date: Feb 6, 1997 International Filing Date: Jul 9, 1996
IPC: C08F 8/12
C08F 261/04
C08F 263/02
D21H 17/37
D21H 21/10
D21H 21/14
D21H 21/16
D21H 21/18
Applicants: BASF AKTIENGESELLSCHAFT
DENZINGER, Walter
RÜBENACKER, Martin
NILZ, Claudia
LORENCAK, Primoz
MÖNCH, Dietmar
SCHUHMACHER, Rudolf
STANGE, Andreas
Inventors: DENZINGER, Walter
RÜBENACKER, Martin
NILZ, Claudia
LORENCAK, Primoz
MÖNCH, Dietmar
SCHUHMACHER, Rudolf
STANGE, Andreas
Title: GRAFT POLYMERS FROM POLYMERS CONTAINING VINYL ESTER AND/OR VINYL ALCOHOL UNITS AND ETHYLENICALLY UNSATURATED COMPOUNDS, PROCESS FOR THEIR PRODUCTION AND THEIR USE
Abstract:
Graft polymers obtainable by the radically initiated polymerisation of (A) monomers or monomer mixture of (a) 1 to 100 wt.% N-vinyl carboxylic acid amides of the formula (I) in which R1, R2 = H and C¿1? to C6 alkyl, (b) 0 to 99 wt.% other monoethylenically unsaturated monomers copolymerisable with the monomers (a), and (c) 0 to 5 wt.% of at least two ethylenically unsaturated monomers with unconjugated double bonds in the molecule; in the presence of (B) polymers containing units of vinyl esters of saturated C1 to C4 carboxylic acids and/or vinyl alcohol units, or mixtures containing these polymers and polymers containing at least 3 alkylene oxide units or polytetrahydrofurane; in the ratio by weight (A) : (B) of (95 to 10) : (5 to 90), possibly followed by the separation of the group (II) from the polymerised monomers (I) of the graft polymer, with the formation of units of the formula (III); process for the production of the graft polymers and use of the graft polymers described above in the production of paper, paperboard and cardboard as a dry and wet strengthening agent, as a retention and dewatering agent and as a promoter in diketene gumming and as a starch cationisation agent, as a dispersant for pigments and as a creping auxiliary in the production of tissue papers.