The Dow Chemical Company

Dow Global Technolgoies LLC

Sk Saran Americas LLC

Susan M Kling

Gary J Schulz

Nitis Sarkar

Stephen B Christensen

Bernard E Obi

Solid additive particles are added to solid vinylidene chloride (VDC) polymer particles by a process comprising the steps of: A. Polymerizing VDC monomer, optionally with one or more mono-ethylenically unsaturated comonomers, in a polymerization zone under polymerization conditions to form solid VDC polymer particles; B. Stopping the polymerization of the VDC monomers after formation of the solid VDC polymer particles; and C. Contacting the solid VDC polymer particles with the solid additive particles (i) before the solid VDC polymer particles are de-watered, and (ii) at a temperature sufficient to melt or soften the solid additives particles but insufficient to melt or soften the solid VDC polymer particles such that the melted or softened solid additive particles adhere to the solid VDC polymer particles upon contact.

Process of incorporating additives into vinylidene chloride polymers without the use of a blender

A process for preparing barrier polymer compositions comprises adding an additive, in the form of a latex, to an aqueous dispersion of barrier polymer particles, coagulating the latex additive on the surface of the polymer particles to coat the polymer particles and then drying the latex-coated polymer particles.

Extrudable barrier polymer compositions, process for preparing the compositions and monolayer or multilayer structures comprising the compositions

Vinylidene chloride polymer compositions comprising a vinylidene chloride polymer and from about 2 to about 12 weight percent of a glycerin ester provide films which exhibit oxygen transmission rates sufficiently low to protect gassy cheeses from spoilage but sufficiently high to let any excess CO,produced during the cheese curing process escape from the packaged gassy cheeses.

Food packaging film

A process for preparing a polymer or copolymer from polymerizable monomers by suspension polymerization whereby foam formation during the removal of residual monomers is inhibited, which process comprises adding at least one salt of an inorganic acid having an anionic valency of at least 2 to the polymer slurry prior to the removal of the residual monomer.

Process for preparing vinylidene chloride or vinyl chloride polymer by

A method of removing undesirable material from water-soluble polysaccharide ethers, such as water-soluble cellulose ethers, via contact of an aqueous solution of the water-soluble polysaccharide ether with an anion exchange resin. Anion exchange resins that are useful in the invention are derived from epoxy resin polymers, acrylic based copolymers or a copolymer of styrene-divinylbenzene. The method significantly reduces the amount of colored bodies in the polysaccharide ether.

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Midland, MI, United States of America

Susan M Kling