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| Applicants: | HUNTSMAN ADVANCED MATERIALS (SWITZERLAND) GMBH [CH/CH]; Klybeckstrasse 200 4057 Basel (CH) | |||||||||||
| Inventors: | BEISELE, Christian; (DE). CHEN, Hongyan; (CN). HISHIKAWA, Satoru; (JP) |
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| Title | (EN) A CURABLE POLYURETHANE COMPOSITION FOR THE PREPARATION OF OUTDOOR ARTICLES, AND THE ARTICLES OBTAINED THEREFROM (FR) COMPOSITION DE POLYURÉTHANE DURCISSABLE POUR LA PRÉPARATION D’ARTICLES D’EXTÉRIEUR, ET ARTICLES OBTENUS AVEC CELLE-CI |
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| Abstract: |
(EN)A curable composition comprising (A) a mixture of homopolymers of polyisocyanates comprising (a1) from 50 wt% to 90 wt% of at least one homopolymer of an aliphatic polyisocyanate, and (a2) from 10 wt% to 50 wt% of at least one homopolymer of a cycloaliphatic polyisocyanate, each based on the total weight of (a1) and (a2), (B) at least one polyol selected from the group of polyether polyol and polyester polyol, and (C) at least one filler selected from the group of quartz sand, quartz powder, silica, aluminium oxide, titanium oxide, zirconium oxide, Mg(OH)2, AI(OH)3, dolomite [CaMg (CO3)2], AIO(OH), silicon nitride, boron nitride, aluminium nitride, silicon carbide, boron carbide, chalk, calcium carbonate, barite, gypsum, hydromagnesite, zeolites, talcum, mica, kaolin and wollastonite, wherein the at least one filler may be silanized, which, in particular, is suitable for the manufacture of outdoor insulation system articles for electrical engineering by casting, potting, encapsulation, and impregnation processes, wherein said articles exhibit good mechanical, electrical and dielectrical properties, and can be used as insulators, bushings, switchgears and instrument transformers.
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