C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/76 (2006.01) C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08L 97/02 (2006.01)
Patent
CA 2426329
A polyisocyanate composition used for binding lignocellulosic materials comprising a polyisocyanate prepolymer said prepolymer being the reaction product from a polyisocyanate comprising an isomer mixture of diphenylmethane diisocyanate and at least one polyether polyol having from 2 to 8 hydroxyl groups wherein the polyether polyol comprises polymerized alkylene units containing at least 15 % ethylene oxide units.
La présente invention concerne une composition polyisocyanate utilisée pour agglomérer des matériaux lignocellulosiques. Cette composition comprend un prépolymère polyisocyanate, ce prépolymère étant le produit de réaction d'un polyisocyanate comprenant un mélange d'isomères de diphénylméthane diisocyanate et d'au moins un polyéther polyol possédant de 2 à 8 groupes hydroxyle, ce polyéther polyol comprenant des unités alkylène polymérisées contenant au moins 15% d'unités d'oxyde d'éthylène.
Skinner Christopher John
Stroobants Peter Frans Eugeen Maria
Huntsman International Llc
Smart & Biggar
LandOfFree
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