Chemically treated fillers and polymeric compositions containing same
AssigneePPG Industries Ohio, Inc.
InventorTimothy A. Okel
Life of this patent
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Abstract
Described are fillers, e.g., inorganic oxides, that have been chemically treated to have a carbon content of greater than 1 weight percent, a mercapto content of at least 0.15 weight percent, a Silane Conversion Index of at least 0.3 and a Standard Reinforcement Index of 4 or more. Polymeric compositions that contain such treated fillers are also described.
Claims23
A chemically treated filler comprising amorphous or particulate inorganic oxide characterized by:
- (a) a carbon content of greater than 1 weight percent;
- (b) a mercapto content of greater than 0.15 weight percent;
- (c) a Silane Conversion Index of at least 0.3;
- and
- (d) a Standard Reinforcement Index of at least 4.
A slurry comprising a combination of water immiscible organic solvent and from 1 to 90 weight percent of amorphous or particulate inorganic oxide characterized by:
- (a) a carbon content of greater than 1 weight percent;
- (b) a mercapto content of greater than 0.15 weight percent;
- (c) a Silane Conversion Index of at least 0.3;
- and
- (d) a Standard Reinforcement Index of at least 4.
A master batch comprising a combination of organic rubber, water immiscible solvent and from 10 to 150 parts per 100 parts of organic rubber of amorphous or particulate inorganic oxide characterized by:
- (a) a carbon content of greater than 1 weight percent;
- (b) a mercapto content of greater than 0.15 weight percent;
- (c) a Silane Conversion Index of at least 0.3;
- and
- (d) a Standard Reinforcement Index of at least 4.
A polymeric article having dispersed therein from 10 to 150 parts per 100 parts of polymer of amorphous or particulate inorganic oxide characterized by:
- (a) a carbon content of greater than 1 weight percent;
- (b) a mercapto content of greater than 0.15 weight percent;
- (c) a Silane Conversion Index of at least 0.3;
- and
- (d) a Standard Reinforcement Index of at least 4.
Dependencies are inferred from the claim text.