公开(公告)号：DE102004038784A1

公开(公告)日：2006-02-23

申请号：DE102004038784

申请日：2004-08-09

Applicant: BASF AG

Inventor： MURRAR IMBRIDT ,  LEIENDECKER THOMAS ,  WIND MICHAEL ,  REESE HANS-JUERGEN

IPC: C08G18/02 ,  C08G18/82

Abstract: Preparation of poor monomer polyisocyanate (I) comprises distillative removal of monomer isocyanate from polymer polyisocyanate, reaction products of polyisocyanate with compounds with groups, that are reactive with isocyanate groups and/or modified polyisocyanate, where distillative removal distance takes place under the use of at least a falling film-short path evaporator. Independent claims are also included for a monomer poor polyisocyanate comprising: higher homology of diphenylmethane-diisocyanate; isocyanate groups and urethane group; or isocyanurate-, allophanate-, biuret-, uretdione-, uretonimine-, carbodiimide-groups.