公开(公告)号：DE59610369D1

公开(公告)日：2003-05-28

申请号：DE59610369

申请日：1996-10-17

Applicant: BASF AG

Inventor： PAKUSCH DR ,  DIEING DR ,  TROPSCH DR

IPC: C08L33/14 ,  C08F6/00 ,  C08F6/14 ,  C08J3/16 ,  C08L33/04 ,  C08L33/24 ,  C09D5/00 ,  C09D5/02 ,  C09J11/08 ,  C09J201/00

Abstract: The production of polymer powder comprises drying an aqueous dispersion of a polymer (A) in which the dispersed particles have a positive or negative electric charge on the surface. The process comprises adding, as auxiliary drying agent, a polyelectrolyte (B) which, in its dissociated form as poly-ion and counter-ion is soluble in the aqueous dispersion medium and in which the charge on the poly-ion is opposite to the surface charge on the dispersed polymer. Also claimed are: (i) the polymer powder obtained by this process; and (ii) the polymer powder containing charged spherical particles of (A) and a polyelectrolyte (B).

公开(公告)号：DE59507952D1

公开(公告)日：2000-04-13

申请号：DE59507952

申请日：1995-12-02

Applicant: BASF AG

Inventor： TROPSCH DR ,  SANNER DR ,  HOESSEL DR ,  RAUBENHEIMER HANS-JUERGEN ,  SCHADE DR

IPC: A61K8/72 ,  A61K8/00 ,  A61K8/81 ,  A61Q5/00 ,  A61Q5/06 ,  A61Q19/00 ,  C08F8/44 ,  C08F26/00 ,  C08F26/10 ,  C08F226/06 ,  C08F226/10 ,  A61K7/06

Abstract: Polymers (I), used in hair styling agents, are prepd. by radical-initiated copolymerisation of: (A) 5-50 wt.% (quat.) 1-vinyl imidazole; (B) 20-80 wt.% N-vinyl caprolactam; (C) 10-60 wt.% N-vinyl pyrrolidone; and (D) 0-30 wt.% additional radical copolymerisable monomer which forms a homopolymer with a Tg > 20 degrees C, with the proviso that the polymer is quaternised if (A) is 1-vinyl imidazole. Cosmetic hair and skin formulations contg. (I) as active ingredients are also claimed. Pref. (A) is 3-methyl-1-vinyl imidazolinium chloride or -methyl sulphate, or 3-ethyl-1-vinyl imidazolinium methyl sulphate. (D) is tert.-butyl acrylate. (I) is prepd. by copolymerisation of a mixt. comprising 10-30 wt.% 1-vinyl imidazole quaternised with di(m)ethyl sulphate as component (A), 40-60 wt.% (B), and 30-50 wt.% (C).