Ferro Corporation

Richard L Abrams

Robert J Opalko

Deenadayalu Chundury

Anthony S Scheibelhoffer

Dennis Lee Hammond

Ronald M Harris

Mir L Ali

Dianna B Dusek

Neil A Burditt

Susan T Schmidt

Theophilus G McGee, Ii

William R Myers

Ronald E Thompson

Surachai Wimolkiatisak

The present invention provides a light reflecting polymeric composition that includes at least one halogenated-flame-retardant-additive-free polymer having dispersed therein a pigment package including a combination of SbOand TiO. The SbOand TiOpreferably have an average particle size within the range of from about 0.05 &#x3bc;m to about 1.0 &#x3bc;m, and more preferably about 0.2 &#x3bc;m. When used in combination, the SbOand TiOpigments synergistically interact together to provide a polymeric composition exhibiting a reflectivity that is substantially higher than can be obtained by the use of either of the pigments alone.

Light fixture with reflective polymeric composition and pigment package

Light reflecting polymeric compositions

The present invention provides a color concentrate comprising (a) at least one resin selected from the group consisting of a polymer of a diene, a rosin material, a coumarone-indene resin, a polymer of vinyl aromatic monomer having an M n of from about 500 to about 4000, a wax and a mixture of two or more thereof, (b) at least one resin selected from the group consisting of a copolymer of an olefin and an acrylate or a methacrylate, a polymer of a vinyl aromatic monomer having an M n of at least about 10,000 and a mixture thereof, and (c) at least one colorant.

Color concentrates and polymer compositions containing the same, and

This invention relates to an abrasive composition comprising (a) a major amount of at least one abrasive powder, (b) at least one resin selected from the group consisting of a polymer of a diene, a rosin material, a coumarone-indene resin, and a mixture of two or more thereof, and (c) at least one copolymer of an olefin and an acrylate or a methacrylate. The abrasive composition may additionally include (d) a surface active agent. The abrasive composition may be added to a polymer or resin to form purge compositions. The invention also relates to methods of cleaning processing equipment and preparing the abrasive compositions and purge composition.

Abrasive and purge compositions

This invention relates to abrasive compositions useful in preparing purge compositions for purging plastics processing equipment comprising: (A-1) at least one abrasive powder comprising a major amount of calcium carbonate; (A-2) at least one organic rosin material; and (A-3) at least one surfactant. The abrasive compositions of the present invention further may comprise at least one viscosity reducing organic diluent. The purging compositions of the present invention comprise (A) a minor amount of the abrasive composition of the invention, and (B) a major amount of at least one polymer or resin. These purging compositions allow fast and effective purging of processing equipment. These compositions may also be reused, i.e., used for more than one purging operation, and they may be recycled by incorporating the used purge composition into a polymer which is identical to or compatible with the polymer (B) of the purge composition. The invention also relates to a method of purging plastics processing equipment utilizing the purging compositions described herein.

Abrasive and purge compositions and methods of using the same

Liquid concentrates for incorporation into polymeric resins are described that are storage stable and resistant to settling or viscosity changes which comprise:

Liquid colorant/additive concentrate for incorporation into plastics

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North Royalton, OH, United States of America

Richard L Abrams