Process for the preparation of moulded articles ha

专利名称：Process for the preparation of moulded

articles having a cellular core and a densifiedmarginal zone with modified mould-releasing properties

发明人：HORN, PETER, DR.,CHAKRABARTI,

SARBANANDA,BOEHME, RALF,SCHMIDT,HANS ULRICH,STREU, JOACHIM, DR.

申请号：EP87103022.7申请日：19870304公开号：EP0240715B1公开日：19910109

摘要：A process for the production of mouldings having a cellular core and a

compacted peripheral zone and improved demoulding properties by the polyisocyanatepolyaddition process, by reacting a) organic polyisocyanates b) relatively high-molecular-weight compounds containing at least 2 reactive hydrogen atoms, and, if desired, c) low-molecular-weight polyhydric alcohols, polyoxyalkylene-polyols and/or secondaryaromatic diamines in the presence of d) an internal mould release agent, comprising A)from 0.1 to 12% by weight, based on the total weight of components (b) and (c), of amixture of i) from 5 to 80 parts by weight of at least one organic amine, and ii) from 20 to95 parts by weight of at least one metal salt of stearic acid, and B) from 0.01 to 32% byweight, based on the total weight of components (b) and (c), of at least one organicmono- and/or dicarboxylic acid or anhydrides thereof, e) catalysts, f) blowing agents, and,if desired, g) assistants and/or additives, in a closed mould with compaction, expediently

using the low-pressure or preferably reaction injection moulding technique.

申请人：BASF AKTIENGESELLSCHAFT,BASF AKTIENGESELLSCHAFT

地址：CARL-BOSCH-STRASSE 38; D-6700 LUDWIGSHAFEN,CARL-BOSCH-STRASSE 38;D-6700 LUDWIGSHAFEN

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