Abstract:
Thermoplastic branched aromatic polycarbonates and novel orthoester branching agents. The polycarbonates may be characterized by structural elements of the formula
Abstract:
Biuret-containing polyisocyanates are prepared by reacting organic polyisocyanates with secondary amines at temperatures of from about 80* to about 200*C. The polyisocyanates which contain biuret groups are useful as isocyanate precursors in the preparation of polyurethane plastics by the isocyanatepolyaddition process.
Abstract:
Substituted oxadiazoles useful in the pesticide field having the general formula
WHEREIN R is chlorine or a radical selected from the group of aliphatic, cycloaliphatic, lower alkyl, lower haloalkyl, Alpha dichloromethyl isocyanide dichloride, aryl, substituted aryl, heterocyclic and substituted heterocyclic are prepared by reacting a compound having the formula
Abstract:
ISOCYANATE GROUP CONTAINING TELMOERS ARE PREPARED BY REACTING ETHYLENICALLY UNSATURATED MONOMERS WITH ORGANIC ISOCYANATES IN THE PRESENCE OF HEAT, HIGH ENERGY RADIATION, PEROXIE RADICAL FORMING AGENTS AND/OR NITROGEN CONTAINING RADICAL FORMING AGENTS OR COMBINATION THEREOF.
Abstract:
POLYURETHANE RESINS PREPARED BY REACTING A POLYOXYMETHYLENE WHICH HAS ALCOHOLIC HYDROXYL GROUPS BUT WHICH IS SUBSTANTIALLY FREE FROM SIMI-ACETALIC HYDROXYL GROUPS AND WHICH HAS A MOLECULAR WEIGHT IN THE RANGE OF 500 TO 4000 WITH AN ORGANIC POLYISOCYANATE AT A TEMPERATURE OF FROM 50*C. TO 200*C.