Polyurethane rigid foam with low density and low thermal conductivity

the invention discloses a low-density low-conductive polyurethane rigid foam, which comprises the following parts: (a) 30-60 wt% polyether, which adopts sucrose as initiator to addition with oxidized olefin; 10-30wt% polyether, which adopts toluenediamine as initiator to addition with oxidized olefi...

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Bibliographische Detailangaben
1. Verfasser:	HAISHUN,WANG YUAN
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	the invention discloses a low-density low-conductive polyurethane rigid foam, which comprises the following parts: (a) 30-60 wt% polyether, which adopts sucrose as initiator to addition with oxidized olefin; 10-30wt% polyether, which adopts toluenediamine as initiator to addition with oxidized olefin; 20-50wt% polyether, which adopts pentaerythrite and methylglucoside as initiator to addition with oxidized olefin; 5-20wt% polyether, which adopts glycerin as initiator to addition with oxidized olefin; (b) 1.5-3.5 wt% compound catalyst; (c) 7-17wt% foamer; (d) 1.5-2.8wt% water; (e) 1.4-4.0wt% foam stabilizer; (f) polyisocyanates, which adopts compound as datum polyether and water with index at 0.95- 1.50.