Milliken & Company

Christopher Thomas Kochanowicz

Keith Alan Keller

Clifford S Bynum

Joseph J Peterson

Kemper David Lake, Jr

Nathan A Mehl

Mark E Ragsdale

Jimmy D Chavis

K David Lake, Jr

F Mark Pitman

Jiannong Xu

Xinfei Yu

Brent Johnson

Kemper D Lake

A thermoplastic polymer composition comprises a thermoplastic polymer, at least one clarifying agent, and at least one coloring agent. A method for producing a thermoplastic polymer composition comprises the steps of separately providing a thermoplastic polymer and an additive composition and then mixing the thermoplastic polymer and additive composition. The additive composition comprises a clarifying agent and a coloring agent. Another method for producing a thermoplastic polymer composition comprises the steps of separately providing a thermoplastic polymer, at least one clarifying agent, and at least one coloring agent and then mixing the thermoplastic polymer, the clarifying agent, and the coloring agent. The thermoplastic polymer exhibits a blue hue factor (&#x3b1;) of 0.93 to 1.1 and/or a normalized brightness value (Y') of 64.0 to 69.6. An additive composition contains at least one clarifying agent and at least one coloring agent.

Additive compositions and thermoplastic polymer compositions comprising the same

A process for extruding polypropylene comprising extruding a composition comprising a polypropylene and a second acid scavenger and less than about 10 ppm of a nucleating agent.

Process for extruding polypropylene

An additive composition comprises a liquid medium and a clarifying agent. The liquid medium is either a liquid hydrocarbon or a surfactant having an HLB of about 6 or less. The clarifying agent is dispersed in the liquid medium. In certain particular embodiments, the additive composition comprises both the liquid hydrocarbon and the surfactant, with the liquid hydrocarbon providing the medium for the additive composition. A thermoplastic polymer composition comprises a thermoplastic polymer and an additive composition of the invention. A method for producing a thermoplastic polymer composition comprises the steps of providing a thermoplastic polymer, providing an additive composition, and mixing the thermoplastic polymer and the additive composition to produce the thermoplastic polymer composition.

Liquid dispersion and thermoplastic compositions comprising the same

A specific combination of two different polyolefin clarifying and nucleating agents, namely 3,4-dimethyldibenzylidene sorbitol and p-methyldibenzylidene sorbitol is provided. Such a combination surprisingly provides improved clarification and crystallization temperatures to polypropylene articles and formulations, better than bis-p-methyldibenzylidene sorbitol alone and equivalent or better than 3,4-dimethyldibenzylidene sorbitol. Such a combination of compounds thus permits the utilization of a new additive for the purpose of modifying polyolefin properties, such as polypropylene clarification and nucleation. The inventive combination may be introduced within any polyolefin composition, again preferably polypropylene, which may then be molded into any shape or form. A method of producing a polyolefin plastic utilizing the inventive combination of compounds is also provided.

Polyolefin additive composition comprising 3,4-dimethyldibenzylidene sorbitol and p-methyldibenzylidene sorbitol

Polyolefin additive composition comprising 3,4-dimethyl dibenzylidene sorbitol and rho-methyl dibenzylidene

This invention relates to an improved procedure and apparatus for making colored polyurethane foam products, such as carpet underlay and the like, as well as the improved colored product itself. Such a procedure entails the utilization of at least one valve assembly within a color dosing manifold such that the valve itself is simultaneously in contact with both the outside surface and the inside surface of the manifold. Such a disposition for a valve assembly permits color to be introduced directly into a binder (i.e., polyol and isocyanate) or polyol stream in order to substantially eliminate any color remaining in contact solely with the inside walls of the manifold. This in turn permits thorough mixing of the binder and colorant and substantially reduces the response time from opening the valve to producing colored polyurethane materials (such as polyurethane foam), thereby effectively eliminating the production of waste polyurethane product. The inventive configuration comprising a specific type of ball valve and/or the placement of a plurality of such disposed valves in a radial configuration on the manifold are also contemplated within the invention.

Valve disposition and configuration designed to improve color dosing response time in a process of coloring polyurethane products

Valve disposition and configuration designed to improve color dosing response time in a process of coloring polyurethane foam carpet underlay

Growing community of inventors

Spartanburg, SC, United States of America

Christopher Thomas Kochanowicz