Milliken + Co

Shawn R Sheppard

Darin L Dotson

John D Anderson

Jeffrey R Jones

Brian Michael Burkhart

Nathan A Mehl

John G Lever

Keith Alan Keller

Jiang Li

Jiannong Xu

Dave Keegan

Dale W Chandler

Chemical additives disclosed for reducing 'plate-out' which have applications in polymers, such as polyolefins. It is possible to provide for a composition and a process for producing parts, sheet and film from polyolefin extrusion applications wherein the polyolefins are processed with a minimal quantity of 'plate-out.' A polyolefin composition may contain a sorbitol-based clarifying system of a derivative of Dibenzylidene, along with one or more co-additives to achieve a reduction in undesirable plate-out.

Method and compositions for reducing plate-out in the manufacture of plastic articles

Plastic additives which are useful as nucleating agents and which are especially useful for improving the optical properties of polymeric materials are provided. More particularly, this invention relates to certain alkyl (or alkoxy) substituted halo-benzylidene sorbitol acetals and polymer compositions thereof which may be utilized within, as merely examples, food or cosmetic containers and packaging. These inventive halogenated (that is, chlorinated, brominated, or iodinated) and alkylated benzylidene sorbitol acetals are also useful as gelling agents for water and organic solvents, particularly those used in the preparation of antiperspirant gel sticks.

Symmetrical halogenated and alkylated alditol derivatives and compositions and articles containing same

Certain multi-substituted dibenzylidene sorbitol acetals having electron withdrawing groups as constituents and electron donating groups on the other such that the compounds are asymmetric in structure and are dipolar in nature are provided. Polymer compositions comprising such compounds, are also contemplated which may be utilized within, as merely examples, food or cosmetic containers and packaging. These inventive asymmetric dipolar dibenzylidene sorbitol acetals are also useful as gelling agents for water and organic solvents, particularly those used in the preparation of antiperspirant gel sticks.

Compositions and articles comprising asymmetric dipolar multi-substituted alditol derivatives

Reaction product mixtures including both symmetric compounds and asymmetric dipolar multi-substituted alditol derivatives

Gels comprising asymmetric dipolar multi-substituted alditol derivatives

Asymmetric dipolar multi-substituted alditol derivatives, methods of making thereof, and compositions and articles containing same

This invention relates to plastic additives which are useful as nucleating agents and which are especially useful for improving the optical properties of polymeric materials. More particularly, this invention relates to certain bis-halogen-alkyl-benzylidene alditol acetals and polymer compositions thereof which are useful as materials for food or cosmetic containers and packaging. These bis-halogen-alkylbenzylidene alditol acetals are also useful as gelling agents for organic solvents, particularly those used in the preparation of antiperspirant gel sticks.

Asymmetric halogen-alkyl alditol derivatives as nucleators and clarifiers for polyolefins, and polyolefin plastic compositions containing same

An additive that is used in conjunction with certain dibenzylidene sorbitol-type (DBS) clarifiers and acid scavengers within polyolefin resins to reduce the release of aldehydes from polypropylene material is disclosed. Hydrazides have been shown to be effective at removing residual aldehyde from polyolefins, such as polypropylene. This function can be accomplished with a minimal impact on optical transparent properties imparted to the polypropylene by the clarifying agent. The net effect is an improvement in the organoleptic performance of resins containing clarifiers, and a reduction in the UV-absorbing extractables. Particularly, adipic dihydrazide, when co-compounded into polypropylene homopolymer with 4-methyl DBS, improves the organoleptic performance of the clarifier. Incorporation of dihydrazides into polypropylene pellets reduced air-released aldehyde by nearly 100%.

Aldehyde emission reduction for dibenzylidene sorbitol clarified plastics

This invention relates to a process for preparing alditol acetals, such as dibenzylidene sorbitols, monobenzylidene sorbitols, and the like, through the reaction of unsubstituted or substituted benzaldehydes with alditols (such as sorbitol, xylitol, and ribitol) in the presence of a mineral acid and at least one surfactant having at least one pendant group of 6 carbon chains in length. Such a reaction provides a cost-effective, relatively safe procedure that provides excellent high yields of alditol acetal product. Furthermore, such a specific reaction is also the best known procedure for the production of certain compounds which can be easily separated from other formed isomers. Additionally, such a procedure facilitates the production of certain asymmetric alditol acetal compounds and compositions in acceptable yields as well. Such alditol acetals are useful as nucleating and clarifying agents for polyolefin formulations and articles, as one example.

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Spartanburg, SC, United States of America

Shawn R Sheppard