公开(公告)号：DE19532718A1

公开(公告)日：1997-03-06

申请号：DE19532718

申请日：1995-09-05

Applicant: BASF AG

Inventor： STEIN STEFAN DR ,  BOECKH DIETER DR ,  SCHADE CHRISTIAN DR ,  ROESLER GERHARD

IPC: C08F2/10 ,  C08F26/00 ,  C08F26/02 ,  C08F26/06 ,  C11D3/00 ,  C11D3/37

Abstract: The invention concerns powdery porous polymers which contain N-vinylimidazol units and are obtained by the radically initiated polymerization in the manner of precipitation polymerization of: a) between 5 and 100 wt.% of at least one N-vinylimidazol of formula (I) in which R , R and R are identical or different and stand for H, C1 - C4 alkyl, monomers of formula (II), in which R and R are identical or different and stand for H, C1 - C4 alkyl or form with one another a ring comprising between 3 and 5 methylene groups, N-vinyloxazolidone, N-vinyltriazol, 4-vinylpyridine-N-oxide or a mixture of said monomers; b) between 0 and 95 wt.% of other copolymerizable monoethylenically unsaturated monomers; and c) between 0 and 50 wt.% of at least one monomer with at least two ethylenically unsaturated non-conjugated double bonds; in an aqueous solution which contains between 0.5 and 30 wt.% of at least one electrolyte and, relative to the monomers used, between 0.5 and 80 wt.% of at least one surfactant. The invention further concerns processes for their preparation and the use of the resultant powdery porous polymers containing N-vinylimidazol units as washing agent additives in order to inhibit dye-transfer during the washing process.

公开(公告)号：DE102004058952A1

公开(公告)日：2006-06-14

申请号：DE102004058952

申请日：2004-12-07

Applicant: BASF AG

Inventor： BOUILLO NATHALIE ,  ROESLER GERHARD

IPC: C08F2/04 ,  A61K8/81 ,  A61K9/32 ,  A61K47/32 ,  C08F2/06 ,  C08F2/10 ,  C08F6/24 ,  C08F220/10 ,  C08F220/56 ,  C08F226/02 ,  C08F226/06 ,  C08J3/12

Abstract: Production (P1) of aqueous secondary dispersions of water-insoluble copolymers involves providing monomer (M) comprising monoethylenically unsaturated monomer and hydrophilic, monoethylenically unsaturated, nonionic monomer, in an organic, water-miscible solvent; and replacing the solvent by water, where toward the end of the polymerization, composition of hydrophilic, monoethylenically unsaturated, nonionic monomer is added. Production (P1) of aqueous secondary dispersions of water-insoluble copolymers involves: (A) providing ethylenically unsaturated monomers (M) in an organic, water-miscible solvent or in a mixture of water with an organic, water-miscible solvent as a free-radical polymerization medium. (M) Comprises at least one monoethylenically unsaturated monomer (M1) with a solubility in water of not > 30 g/l at 25[deg]C and 1 bar, and at least one hydrophilic, monoethylenically unsaturated, nonionic monomer with a solubility in water of at least 80 g/l at 25[deg]C and 1 bar; and (B) removing the organic solvent and adding water, where toward the end of the polymerization of step (A), a monomer composition comprising at least one hydrophilic, monoethylenically unsaturated, nonionic monomer is added to the polymerization medium. An independent claim is included for producing (P2) aqueous secondary dispersions of water-insoluble polymers, where the polymers are produced by free-radical polymerization of ethylenically unsaturated monomer (M) involving: i) adding at least one monoethylenically unsaturated monomer with a solubility of not > 10 g/l at 25[deg]C in water and 1 bar, and at least one hydrophilic, monoethylenically unsaturated, nonionic monomer with a solubility of at least 80 g/l at 25[deg]C in water and 1 bar, to an organic, water-miscible solvent or a mixture of water and an organic, water-miscible solvent, where 85 - 97 wt.% of (M) is added to provide a primary polymerization medium; ii) providing a monomer composition comprising one hydrophilic, monoethylenically unsaturated, nonionic monomer (at least 90 wt.%) with a solubility of at least 80 g/l at 25[deg]C and 1 bar in water, and adding the monomer composition to the primary polymerization medium; and iii) removing the organic solvent and adding water following the addition of the monomer composition to the polymerization medium.