公开(公告)号：ES2119421T3

公开(公告)日：1998-10-01

申请号：ES95914342

申请日：1995-04-06

Applicant: BASF AG

Inventor： ZIRNSTEIN MICHAEL ,  TRIESELT WOLFGANG ,  OPPENLANDER KNUT ,  NILZ CLAUDIA ,  KRONER MICHAEL ,  GUNTHER WOLFGANG

IPC: C08F8/00 ,  C08F8/28 ,  C08G12/00 ,  C08G12/06 ,  C11D3/00 ,  C11D3/37

Abstract: PCT No. PCT/EP95/01251 Sec. 371 Date Oct. 17, 1996 Sec. 102(e) Date Oct. 17, 1996 PCT Filed Apr. 6, 1995 PCT Pub. No. WO95/29221 PCT Pub. Date Nov. 2, 1995The use of polymers which are preparable by reaction of (a) polymers that contain vinylamine units, with (b) compounds that contain aldehyde or keto groups, and optionally (c) NH- and/or OH-containing compounds and which contain aminal, hemiaminal and/or aminal-acetal structures with or without unconverted vinylamine units, as detergent additive for inhibiting dye transfer during the wash, and polymers containing aminal, hemiaminal and/or aminal-acetal structures, obtainable by reaction of (a) polymers that contain vinylamine units, with (b) compounds that contain aldehyde or keto groups, and (c) NH- and/or OH-containing compounds, and detergents which contain the abovementioned polymers in amounts from 0.05 to 10% by weight.

公开(公告)号：ES2112050T3

公开(公告)日：1998-03-16

申请号：ES95912254

申请日：1995-03-20

Applicant: BASF AG

Inventor： NILZ CLAUDIA ,  WINTER MANFRED ,  KRONER MICHAEL ,  STANGE ANDREAS ,  SCHUHMACHER RUDOLF

IPC: C08F8/12 ,  D21H17/34 ,  D21H21/18 ,  D21H21/20

Abstract: PCT No. PCT/EP95/01030 Sec. 371 Date Sep. 30, 1996 Sec. 102(e) Date Sep. 30, 1996 PCT Filed Mar. 20, 1995 PCT Pub. No. WO95/26989 PCT Pub. Date Oct. 12, 1995Solutions of polymers containing vinylamine units, which solutions have a long shelf life, are prepared by hydrolyzing polymers containing N-vinylcarboxamide units with acids in an aqueous medium and removing the carboxylic acids eliminated from the polymers as esters from the aqueous polymer solution after the hydrolysis by adding at least stoichiometric amounts of at least one C1-C6-alcohol and distilling off the esters from the reaction mixture, and said aqueous solutions are used as dry and wet strength agents in papermaking.