Polymeric metal terephthalate and isophthalate fibers and method of making
AssigneeSynthetic Products Company
InventorsThomas C. Jennings, David M. Tanno
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Abstract
Anhydrous polymeric metal terephthalate and isophthalate fibers are disclosed and a method for making them wherein said metal is selected from the group consisting of calcium, barium, magnesium and zinc, said fibers have an average aspect ratio of greater than about 5:1. These fibers are very useful additives serving as property extenders and/or reinforcing agents in polymeric compositions and articles molded therefrom.
Claims19
A method of making anhydrous polymeric metal terephthalate or isophthalate fibers comprising
- reacting incremental amounts of a metal compound selected from the group consisting of calcium, magnesium, barium and zinc metal compounds and a polycarboxylic acid selected from the group consisting of terephthalic acid, isophthalic acid, or salts thereof, in the presence of water to form fibers having an average aspect ratio of greater than about 5:1 and heating said fibers to render them anhydrous.
A method of making anhydrous polymeric metal terephthalate or isophthalate fibers comprising
- reacting incremental amounts of a metal compound selected from the group consisting of calcium, magnesium, barium and zinc metal compounds and a polycarboxylic acid selected from the group consisting of terephthalic acid, isophthalic acid, or salts thereof in the presence of water at a temperature from about 80.degree. C. to 100.degree. C. to form the fibers having an average aspect ratio of greater than about 5:1 and a size up to about 325 mesh and heating said fibers to render them anhydrous.
Dependencies are inferred from the claim text.