METHOD OF PRODUCING LOW-HEAT CONDUCTIVITY RIGID POLYURETHANE FOAMS AND RIGID POLYURETHANE FOAMS OBTAINED BY THIS METHOD

FIELD: polymer production. SUBSTANCE: rigid polyurethane foams are obtained by using (A) polyol component containing (i) at least one polyesterpolyol with molecular weight 100 to 30000 and containing at least two hydrogen atoms reactive toward isocyanates; (ii) aminoplyethers with molecular weight 2...

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Bibliographische Detailangaben
Hauptverfasser:	KHAJNEMANN TORSTEN, AJZEN NORBERT, KLEHN VAL'TER, MAKKALLAF DEHNNIS
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	FIELD: polymer production. SUBSTANCE: rigid polyurethane foams are obtained by using (A) polyol component containing (i) at least one polyesterpolyol with molecular weight 100 to 30000 and containing at least two hydrogen atoms reactive toward isocyanates; (ii) aminoplyethers with molecular weight 250 to 12500 containing at least two hydrogen atoms reactive toward isocyanates and at least one tertiary nitrogen atom; (iii) polyethers with molecular weight 250 to 12500 containing at least two hydrogen atoms reactive toward isocyanates; and (iv) pore former (alkane or alkane mixture); and (B) organic and/or modified organic polyisocyanate with NCO group content 20 to 48 wt %. EFFECT: lowered heat conductivity and enabled use as interlayer between constituents of a hollow-filling material. 13 cl, 3 tbl, 11 ex _