polyester

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polyester,

synthetic fiber, produced by the polymerization of the product formed when an alcohol and organic acid react. The outstanding characteristic of polyesters is their ability to resist wrinkling and to spring back into shape when creased. In addition, polyesters have good dimensional stability, wash and dry easily and quickly, and have excellent wash-and-wear or minimum-care characteristics; one of their principal uses is in apparel fabrics of this kind. Microfiber, which was introduced in 1986, is a variety of polyester that has extremely thin filaments (half as thick as silksilk,
fine, horny, translucent, yellowish fiber produced by the silkworm in making its cocoon and covered with sericin, a protein. Many varieties of silk-spinning worms and insects are known, but the silkworm of commerce is the larva of the Bombyx mori,
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 fibers). Polyesters are also used in casement curtains, throw rugs, and as a cushioning or insulating material.

polyester

any of a large class of synthetic materials that are polymers containing recurring -COO- groups: used as plastics, textile fibres, and adhesives
References in periodicals archive ?
The process model is developed in Aspen Custom Modeler, and the polyesterification of maleic anhydride with propylene glycol is used as model reaction in this study.
The functional groups in the polyesterification of maleic anhydride and 1,2-propylene glycol.
Arrhenius parameters for the polyesterification reaction between maleic anhydride and propylene glycol.
The polyesterification reaction is an equilibrium reaction, and thus maximum 88-90% conversion can be obtained.
However, Chang and Karalis (10) reported that the proton from the dissociation of the adipic acid played a very important role in the catalyzed reaction along with the external catalyst, and the reaction rate of the catalyzed polyesterification must be affected by the combination of the adipic acid catalysis and the external catalysis.
In the polyesterification of acid and glycol with metal catalyst, it was considered that both acid and catalyst act as the catalyst.
It can be seen that the n of BHBS and the 2n of water are formed by polyesterification of n acid and 2n glycol in the reaction model (b).
The last part, thermodynamically controlled, usually represents the longest part of an industrial process of polyesterification.