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US 4,360,607 AGranted
Microwave energy sensitizing concentrate
AssigneePhillips Petroleum Company
InventorsAgmund K. Thorsrud, Roy W. Siedenstrang
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AssigneePhillips Petroleum Company
InventorsAgmund K. Thorsrud, Roy W. Siedenstrang
Estimating the term…
A composition of matter suitable for sensitizing thermoplastic compositions to the heating effects of microwave energy in which the components of the composition are (1) an alcohol amine or derivative thereof; (2) a simple or polymeric alkylene glycol or derivative thereof; (3) silica; and (4) optionally, a plastomer that is a normally solid linear or radial teleblock copolymer derived from butadiene and styrene. A method for preparing this composition as a dry, free-flowing powder by preparing a liquid mixture of the polymeric alkylene glycol or derivative and the alcohol amine or derivative which mixture is then charged into a premixed combination of granulated plastomer, if used, and silica. A method for preparing flow molding compounds by admixing a non-polar thermoplastic with a sufficient amount of the sensitizer composition to provide microwave energy sensitivity. Subjecting the flow molding composition, in a mold, to microwave energy thereby producing a flow molded composition.
A composition of matter which on addition to a non-polar thermoplastic composition is suitable for sensitizing said thermoplastic composition to the heating effects of microwave energy, said composition comprising an admixture of (1) from about 10 to about 50 weight percent of simple and polymeric alkylene glycols and their mono- and dialkyl esters, (2) about 10 to about 50 weight percent of ethanolamines isopropanolamines and their hydrocarbyl-substituted derivatives, (3) about 20 to about 75 weight percent silica and (4) a linear or radial teleblock copolymer plastomer derived from butadiene and styrene in which the butadiene to styrene ratio can vary from about 85:15 to about 55:45 parts by weight said plastomer in an amount ranging from a finite amount up to about 40 weight percent.
A method for preparing a dry, free-flowing composition of claim 6 comprising:
Dependencies are inferred from the claim text.