C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
18/1216, 402/123
C08G 18/08 (2006.01) C08G 18/80 (2006.01) C08K 5/16 (2006.01) C08K 5/205 (2006.01) C08L 75/08 (2006.01)
Patent
CA 1171592
Abstract of the Disclosure Rigid, solid, non-cellular, urethane polymer compositions can be prepared which are the reaction product of at least one polyhydric alcohol with at least one organic polyisocyanate in the presence of a low molecular weight urethane modifier adduct which is the reaction product prepared, for instance, by reacting (1) at least one poly- isocyanate and at least one monohydric alcohol or (2) at least one monofunctional isocyanate with at least one mono- hydric or polyhydric alcohol. Said adduct can also consist of mixtures of (1) and (2). Such polymers when prepared in the presence of any catalyst for urethane formation which is a liquid or solid at ambient temperature, set quickly to solid, rigid polymers having a density of at least one gram per cubic centimeter. They can be demolded after combining the materials, without the addition of heat from an external source, within a period of less than one minute to about 15 minutes. By proper selection of the urethane modifier adduct, flame-retardant polymers can be prepared.
360591
Parekh Manher
Patton John T. Jr.
Vogt Herwart C.
Basf Wyandotte Corporation
Robic Robic & Associes/associates
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