Back to results
US 2010/0142676 A1Published application
Process for making thermally resistant mineral-filled polyacetal
AssigneeE. I. Du Pont de Nemours and Company
InventorAndreas Renken
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method of making polyacetal compositions and molded articles of these, which comprise at least one mineral filler that has not been previously coated before being mixed into the compositions.
Claims14
A method of making a polyacetal composition comprising mixing:
- i) from at or about 20 to at or about 84.5 weight percent of a polyacetal resin, based on the total weight of the polyacetal composition
- ii) from at or about 15 to at or about 80 weight percent of at least one mineral filler, based on the total weight of the polyacetal composition;
- and
- iii) from at or about 0.5 to at or about 6 weight percent of at least one component selected from the group consisting of fatty acid esters, fatty acid amides, and mixtures of these, the weight percent based on the weight of the at least one mineral filler,
- wherein the at least one mineral filler has not been previously coated.
2 more elements
A method of making a shaped polyacetal composition comprising:
- a) mixing
- i) from at or about 20 to at or about 79.5 weight percent of a polyacetal resin, based on the total weight of the polyacetal composition;
- ii) from at or about 20 to at or about 80 weight percent of at least one mineral filler, based on the total weight of the polyacetal composition;
- iii) from at or about 0.5 to at or about 5 weight percent of at least one component selected from the group consisting of fatty acid esters, fatty acid amides, and mixtures of these, based on the weight of the at least mineral filler,
- to obtain a polyacetal composition, and
- b) shaping the polyacetal composition of a),
- wherein the at least one mineral filler has not been previously coated.
4 more elements
A part for a conveyor belt comprising a polyacetal composition, the polyacetal composition made by a method comprising:
- mixing:
- i) from at or about 20 to at or about 84.5 weight percent of a polyacetal resin, based on the total weight of the polyacetal composition,
- ii) from at or about 15 to at or about 80 weight percent of at least one mineral filler selected from the group consisting of barium sulfate, lanthanide oxide, zinc oxide and mixtures of these, based on the total weight of the polyacetal composition;
- and
- iii) from at or about 0.5 to at or about 6 weight percent of at least one component selected from the group consisting of fatty acid esters, fatty acid amides, and mixtures of these, based on the weight of the at least one mineral filler,
- wherein the at least one mineral filler has not been previously coated.
3 more elements
A method for detecting conveyor system material in an ingestible product conveyed by a conveyor system comprising:
- a) making at least one conveyor system part comprising a polyacetal composition made by a method comprising:
- mixing
- i) from at or about 20 to at or about 84.5 weight percent of a polyacetal resin, based on the total weight of the polyacetal composition;
- ii) from at or about 15 to at or about 80 weight percent of at least one X-ray opaque mineral filler, based on the total weight of the polyacetal composition;
- and
- iii) from at or about 0.5 to at or about 6 weight percent of at least one component selected from the group consisting of fatty acid esters, fatty acid amides, and mixtures of these, the weight percent based on the weight of the at least one mineral filler,
- wherein the at least one X-ray opaque, mineral filler has not been previously coated;
- b) transporting the ingestible product by a conveyor system comprising the at least one conveyor system part made by step a);
- c) irradiating the ingestible product with X-Rays;
- d) detecting the presence of X-ray opaque mineral filler.
7 more elements
Dependencies are inferred from the claim text.