Polyester resin and method for preparing the same

a polymer resin and polymer technology, applied in the field of polymer resins, can solve the problems of difficult to enhance the heat resistance of bisphenol-a through stretching or crystallization process, limitations on application and enhancement of heat resistance, etc., and achieve the effect of superior heat resistance and impact strength
US20120177854A1Inactive Publication Date: 2012-07-12SK CHEM CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SK CHEM CO LTD
Publication Date
2012-07-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A polyester resin copolymerized with isosorbide and 1,4-cyclohexane dimethanol and having an improved impact strength, and a method for preparing the same are disclosed. The copolymerized polyester resin has an alternating structure of acid moieties which are derived from acid components and diol moieties which are derived from diol components, wherein the acid components comprise terephthalic acid, and the diol components comprise (i) 5˜99 mol % of 1,4-cyclohexanedimethanol and (ii) 1˜60 mol % of isosorbide with respect to the total diol components.
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Description

TECHNICAL FIELD

[0001] This invention relates to a polyester resin and a method for preparing the same, and more specifically to a polyester resin copolymerized with isosorbide and 1,4-cyclohexane dimethanol and having an improved impact strength, and a method for preparing the same.BACKGROUND ART

[0002] The polyester resin has been widely used in fields of the packing materials, the forming products and the films, and is one of the environment-friendly plastics which has no endocrine disruptors. Recently, in the polycarbonate which has been used as the heat-resisting container for food, harmfulness of bisphenol-A to the human being has been revealed. So, the demand for the environment-friendly transparent and heat-resisting polyester resin has more increased. The polyester resin which is copolymerized with at least two glycol or dicarboxylic acid components has been commercially widely used to improve a moldability thereof and to remove a crystallinity thereof. In the case of homopolye...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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