Koch Industries, Inc.

Gregory R Hahn

Harold W Earhart

Jack B Tatman

Ronald W Osman

A significantly improved plasticizer-polymer composition embraces a polymer containing a di-, tri- and/or tetra-ethyl-, propyl- and/or butylbiphenyl plasticizer which constitutes the major proportion by weight of any other plasticizing/softening additive, provided that the polymer is not polyvinyl chloride and when the polymer is an elastomer or rubber, or is a polystyrene, said plasticizer is diisopropylbiphenyl and/or triisopropylbiphenyl, and when the polymer is of a plastisol, essentially no ester plasticizing additive is present. As well, a polymer fabrication composition comprises a monomer and/or oligomer component in combination with said plasticizer. A method for preparing the plasticizer-polymer composition and/or the fabrication composition comprises contacting the monomer and/or oligomer component with said plasticizer, mixing to provide a uniform mixture, and carrying out further processing as may be desired so as to optionally prepare the plasticized-polymer composition. For instance, thermosets such as epoxies and polyurethanes and elastomers such as polybutadienes and other polymers can have high loading levels of the plasticizer employed without sacrifice of plasticized polymer properties. Moreover, the high loading capacity in many cases can represent a significant increase over that found from prior art plasticizing/softening additives.

Lower alkyl biphenyls as plasticizers for polyurethane

A significantly improved plasticizer-polymer composition embraces a polymer containing a di-, tri- and/or tetra- ethyl-, propyl- and/or butylbiphenyl plasticizer which constitutes the major proportion by weight of any other plasticizing/softening additive, provided that the polymer is not polyvinyl chloride and when the polymer is an elastomer or rubber, or is a polystyrene, said plasticizer is diisopropylbiphenyl and/or triisopropylbiphenyl, and when the polymer is of a plastisol, essentially no ester plasticizing additive is present. As well, a polymer fabrication composition comprises a monomer and/or oligomer component in combination with said plasticizer. A method for preparing the plasticizer-polymer composition and/or the fabrication composition comprises contacting the monomer and/or oligomer component with said plasticizer, mixing to provide a uniform mixture, and carrying out further processing as may be desired so as to optionally prepare the plasticized-polymer composition. For instance, thermosets such as epoxies and polyurethanes and elastomers such as polybutadienes and other polymers can have high loading levels of the plasticizer employed without sacrifice of plasticized polymer properties. Moreover, the high loading capacity in many cases can represent a significant increase over that found from prior art plasticizing/softening additives.

Lower alkyl biphenyls as plasticizers

A remarkably low odor carbonless paper solvent is provided comprising a mixture of diisopropylbiphenyl and triisopropylbiphenyl, generally in an amount of 50 to 90% by weight diisopropylbiphenyl and 10 to 40% by weight triisopropylbiphenyl. The solvent and a chromogenic substance such as a leuco dye are encapsulated to form microcapsules which are coated onto one surface of a carrier sheet. A color developing substance is then applied to another sheet to form a carbonless marking system. When the microcapsules are ruptured, the solubilized chromogenic substance contacts and reacts with the developer to form an image.

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Corpus Christi, TX, United States of America

Gregory R Hahn