Ester plasticizers for polyarethane compositions
AssigneeCasChem, Inc.
InventorsWilliam J. Downey, Melvin Brauer, Jerry C. Chao
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Abstract
A plasticized polyurethane gel system comprising the reaction product of an isocyanate compound and a polyol in the presence of a plasticizer compound having a total solubility parameter of between about 8.3 and 8.9 or between about 9.1 and 9.7.
Claims13
A polyurethane gel composition comprising about 10 to 90 parts by weight of the liquid reaction product of an organic polyisocyanate and a polyol having an equivalent weight above 250 in the presence of about 90 to 10 parts by weight of an ester plasticizer compound having a total solubility parameter of between about 8.3 and 8.9 or between about 9.1 and 9.7.
A polyurethane gel composition comprising about 30 to 40 parts by weight of the liquid reaction product of an organic polyisocyanate compound and a polyol having an equivalent weight above 250 in the presence of about 70 to 60 parts by weight of an ester plasticizer compound having a total solubility parameter of between about 8.3 and 8.9 or between about 9.1 and 9.7.
A polyurethane gel composition comprising the liquid reaction product of about 10 to 50 parts by weight of a polyisocyanate prepolymer and a polyol having an equivalent weight above 250 in the presence of about 90 to 50 parts by weight of an ester plasticizer compound having a total solubility parameter of between about 8.3 and 8.9 or between 9.1 to 9.7.
A polyurethane composition comprising about 50 to 90 parts of the liquid reaction product of an organic polyisocyanate and a polyol having an equivalent weight about 250 in the presence of about 50 to 10 parts of an ester plasticizer compound having a total solubility parameter of between about 8.3 and 8.9 or between about 9.1 and 9.7.
Dependencies are inferred from the claim text.