公开(公告)号：DE59610398D1

公开(公告)日：2003-06-05

申请号：DE59610398

申请日：1996-09-25

Applicant: BASF AG

Inventor： RUPANER DR ,  SCHUMACHER DR ,  KIRCHNER DR ,  MORRISON DR ,  OFFNER ROLAND ,  SEYFFER DR

IPC: C08F220/18 ,  D04H1/4209 ,  D04H1/4218 ,  D04H1/4242 ,  D04H1/425 ,  D04H1/4258 ,  D04H1/43 ,  D04H1/4334 ,  D04H1/435 ,  D04H1/587 ,  D04H1/64 ,  D04H1/645 ,  D06M15/227 ,  D06M15/233 ,  D06M15/263 ,  D06M15/285 ,  D06M15/29 ,  D06M15/31 ,  D06M15/327 ,  D06M15/333 ,  D06M15/347 ,  D06M15/356 ,  G03C1/00 ,  G03C1/496

Abstract: A process for the prodn. of reusable fibre composite materials (FCM) contg. fibres (I) bonded together with a polymeric binder is claimed. The binder consists of an aq. dispersion of a polymer (II) which is film-forming at usage temps. and which goes entirely into soln. when the pH of the dispersion medium is changed. Also claimed is (i) material (FCM) obtd. by this process, esp. in the form of non-woven fabric or paper, and (ii) a process for recycling FCM, in which the FCM is treated with an aq. medium at a pH such that polymer (II) is dissolved to give fibres and binder soln., which are then sepd. and reused.