公开(公告)号：DE59605837D1

公开(公告)日：2000-10-12

申请号：DE59605837

申请日：1996-04-11

Applicant: BASF AG

Inventor： LICHT DR ,  SEYFFER DR ,  RIEGER DR ,  KAEHS HELMUT ,  HUMMERICH DR

IPC: C08G18/08 ,  C08G18/66 ,  C08J7/04 ,  C09J7/02

Abstract: Packaging film is coated with a polyurethane (I) contg. hydrophilic gps. so that it is dispersible in water, which has a m.pt of 20-70 degrees C and a melt enthalpy of at least 20 J/g in this temp. interval. Also claimed is a method for producing the film; methods for packaging with this film; and packed articles obtd. using this film.

公开(公告)号：DE59610327D1

公开(公告)日：2003-05-15

申请号：DE59610327

申请日：1996-07-18

Applicant: BASF AG

Inventor： PITTEROFF DR ,  HUMMERICH DR ,  SEYFFER DR ,  REINHARD DR

IPC: B01D39/00 ,  B01D39/08 ,  B32B27/42 ,  C03C25/34 ,  C04B26/12 ,  C08G12/40 ,  C08G12/46 ,  C08J5/24 ,  C08K5/00 ,  C08K5/053 ,  C08K5/3492 ,  C08L61/24 ,  D04H1/4209 ,  D04H1/4218 ,  D04H1/425 ,  D04H1/435 ,  D04H1/587 ,  D04H1/645 ,  D06M15/423 ,  D06M15/427 ,  D06N1/00 ,  D06N3/00 ,  D06N3/12 ,  D06N5/00 ,  D06N7/06 ,  H01M2/16 ,  H01M4/62

Abstract: A novel resin mixt comprises (by wt): (a) 55-98.8% urea-HCHO(UF) resin; (b) 0.1-20% melamine; (c) 0.1-20% dicyandiamide; and (d) 1-30% aliphatic 2-4C alkanol with at least 2 alcoholic OH gps (polyol A) or an ether contg at least 2 alcoholic OH gps and built up from 2-10 units derived form polyol A.

公开(公告)号：DE59702552D1

公开(公告)日：2000-12-07

申请号：DE59702552

申请日：1997-05-07

Applicant: BASF AG

Inventor： SCHUMACHER DR ,  HUMMERICH DR ,  KIRSCH DR

IPC: D04H1/435 ,  D04H1/587 ,  D04H1/64 ,  D04H1/645 ,  D04H3/011 ,  D04H3/12

Abstract: A method for removing a polymer binder containing carboxylate groups cross-linked via alkaline earth metal ions from impregnated nonwovens comprises: (1) the nonwoven is treated with an aqueous alkali salt solution so that the alkali salt anions combine with the alkaline earth metal cations to form a poorly soluble salt or chelate; and (2) the binder-free fibres are separated. Preferably a phase transfer catalyst, preferably an alkyl phenol ethoxylate, fatty alcohol ethoxylate, oxo alcohol ethoxylate or quat. organic ammonium salt, is used in the alkali salt solution. Calcium ions are the cations present. The binder comprises a radical-polymerised polymer containing 0.1-30 wt.% carboxylate groups, of which 50-100 wt.% are present as salts containing alkaline earth metal cations. The alkali salt solution has a temperature of 10-100 degrees C. The nonwoven is added to the alkali salt solution, which is then optionally stirred before separating the fibres 1-60 minutes later.