Patent ID: 9738747
Date: 2017-08-22
CPC Classifications: C08G,C08J

Claim:
1. A one component isocyanate prepolymer mixture for formulating a polyurethane foam product in a single step process, the mixture comprising: (a) monomeric methylene diphenyl diisocyanate (MDI) at a content in the mixture not exceeding 3% of the total weight of the mixture, (b) a monofunctional alcohol compound, (c) an isocyanate-containing component, (d) a propellant, (e) a catalyst, (f) a stabiliser, and (g) one or more polyols, wherein the monofunctional alcohol compound is an ethylene glycol ether or propylene glycol ether, selected from the group consisting of 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol, 2-isopropoxyethanol, 2-butoxyethanol, 2-phenoxyethanol, 2-benzyloxyethanol, 2-(2-methoxyethoxy)ethanol, 2-(2-ethoxyethoxy)ethanol, 2-(2-butoxyethoxy)ethanol, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, 1-propoxy-2-propanol, 5-methyl-4,7-dioxa-2heptanol, 5-methyl-4,7-dioxa-2-decanol, 2-(2-butoxymethylethoxy)methylethoxy)propanol, 1-butoxy-2-propanol, 1-(2-butoxy-1-propoxy)2-propanol, and [2-(2-methoxypropoxy)propoxy]propanol.