Polyesters containing natural mineral materials, processes for producing such polyesters, and shaped articles produced therefrom
OwnerRichard Hayesinventor
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Abstract
This invention provides polyester compositions containing pumice fillers, and shaped articles formed from the polyester compositions. Also provided are polyester compositions containing perlite fillers, and shaped articles formed from the compositions. The polyester compositions can also contain one or more other fillers, and can also optionally contain a heavy metal-containing or heavy metal-free catalyst. The invention further provides processes for producing the polyester compositions, and shaped articles formed therefrom.
Claims116
A polyester composition comprising a polyester and at least about 0.0001 weight percent of one or more pumice fillers, based on total weight of the polyester composition.
A process for producing a polyester composition comprising:
- providing a dicarboxylic acid component, a glycol component, and, optionally, a polyfunctional branching agent component to form a reaction mixture contacting the reaction mixture with a pumice filler, and allowing the dicarboxylic acid component, the glycol component, and the optional polyfunctional branching agent to polymerize in the presence of the pumice filler to form a polyester.
A polyester composition comprising a polyester and at least about 0.0001 weight percent of one or more perlite fillers, based on total weight of the polyester composition.
A process for producing a polyester composition comprising:
- providing a dicarboxylic acid component, a glycol component, and, optionally, a polyfunctional branching agent component to form a reaction mixture contacting the reaction mixture with a perlite filler, and allowing the dicarboxylic acid component, the glycol component, and the optional polyfunctional branching agent to polymerize in the presence of the perlite filler to form a polyester.
Dependencies are inferred from the claim text.