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1. (WO1992010350) METHOD OF PRODUCING MOULDED ARTICLES BY COMPRESSING SMALL PARTICLES OR GRANULES OF POLYISOCYANATE POLYADDITION PRODUCTS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/010350 International Application No.: PCT/EP1991/002217
Publication Date: 25.06.1992 International Filing Date: 26.11.1991
Chapter 2 Demand Filed: 26.11.1991
IPC:
B29C 43/00 (2006.01) ,C08G 18/66 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
43
Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
28
characterised by the compounds used containing active hydrogen
65
Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
66
Compounds of groups C08G18/42, C08G18/48, or C08G18/52111
Applicants:
BAYER AKTIENGESELLSCHAFT [DE/DE]; D-51368 Leverkusen, DE (AllExceptUS)
WAGNER, Joachim [DE/DE]; DE (UsOnly)
RASSHOFER, Werner [DE/DE]; DE (UsOnly)
ELSNER, Thomas [DE/DE]; DE (UsOnly)
Inventors:
WAGNER, Joachim; DE
RASSHOFER, Werner; DE
ELSNER, Thomas; DE
Priority Data:
P 40 39 020.907.12.1990DE
Title (DE) VERFAHREN ZUM HERSTELLEN VON FORMKÖRPERN DURCH VERPRESSEN VON KLEINSTÜCKIGEN TEILCHEN BZW. GRANULAT AUF BASIS VON POLYISOCYANAT-POLYADDITIONSPRODUKTEN
(EN) METHOD OF PRODUCING MOULDED ARTICLES BY COMPRESSING SMALL PARTICLES OR GRANULES OF POLYISOCYANATE POLYADDITION PRODUCTS
(FR) PROCEDE DE FABRICATION DE PIECES MOULEES PAR COMPRESSION DE PARTICULES OU DE GRANULATS EN PETITS MORCEAUX, A BASE DE PRODUITS DE POLY-ADDITION DE POLYISOCYANATES
Abstract:
(DE) Bei der Herstellung von Formkörpern durch Verpressen von kleinstückigen Teilchen bzw. Granulat auf Basis von Polyisocyanat-Polyadditionsprodukten in einem Presswerkzeug unter Einwirkung von Drücken bis 1000 bar und Temperaturen bis 230 °C wird deren Festigkeit dadurch verbessert, dass beim Verpressen zwischen den einzelnen Teilchen bzw. Granulatkörnern eine zusätzliche Scherbeanspruchung erfolgt.
(EN) The invention concerns the production of moulded articles by compressing small particles or granules of polyisocyanate polyaddition products in a press at pressures of up to 1,000 bar and temperatures of up to 230 °C. The invention enables the strength of the moulded articles to be increased by virtue of the fact that, during compression, an additional shear stress is produced between the individual particles or granules.
(FR) Dans la fabrication de pièces moulées par compression de particules ou de granulats en petits morceaux, à base de produits de poly-addition de polyisocyanates, dans un dispositif de moulage par compression, sous une pression pouvant atteindre 1000 bar et des températures allant jusqu'à 230 °C, on améliore la résistance de ces pièces grâce au fait qu'une contrainte de cisaillement supplémentaire est exercée lors de la compression, entre les diverses particules ou les divers grains des granulats.
Designated States: CA, JP, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0560804JPH06503044CA2099610KR1019930703131