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Biodegradable elastomeric compound

A biodegradable and elastomeric technology, applied in the field of polymer compositions, can solve problems such as difficult processing and limited application

Active Publication Date: 2011-02-02
A P I APPL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, these plastics do not always have the excellent mechanical properties of synthetic plastics, making them less widely used or more difficult to process than their biodegradability

Method used

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Experimental program
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Embodiment

[0053] The polymer compositions described herein were provided by mixing the following components in the weight percents shown in Table 1 in a co-rotating twin-screw extruder.

[0054] Table 1

[0055]

[0056] The obtained polymer composition is called "NAT4 BIS1", and its mechanical properties were measured according to the test methods shown in Table 2, and the results are shown in Table 2.

[0057] Table 2

[0058]

[0059] The polymer composition obtained exhibits a hardness value of 50-98 on the Shore A scale, an abrasion resistance of a maximum of 150 mm3 and an elongation of more than 400%. These mechanical properties and aesthetic appearance and feel make the polymer composition suitable for use in shoe making and overmolding.

[0060] It has been found in practice that the polymer composition according to the invention fully achieves the proposed objectives, since the materials obtained by compounding specific precursors are characterized by mechanical proper...

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Abstract

A polymeric compound having a hardness from 50 on the Shore A scale to 65 on the Shore D scale and comprising a thermoplastic polyester urethane having a hardness from 50 to 90 on the Shore A scale, comprising a polyester, an isocyanate and a chain extender, wherein the ratio between the quantity of polyester and chain extender and the quantity of isocyanate is lower than 8:2, an aliphatic and aromatic copolyester with a hardness from 32 to 70 on the Shore D scale,and a non-phthalic plasticizer.

Description

field of invention [0001] The present invention relates to an elastomeric and biodegradable polymer composition for use in the field of production of molded, overmolded or extruded shoes, sports and technical articles. technical background [0002] Plastics have grown in importance in the world market in recent years and are now a fundamental part of everyday life, so that "plastic aging" can now be appropriately referred to. [0003] While on the one hand plastics offer many advantages, on the other hand, the misuse of this material has brought about the problem of environmental degradation, which has a worldwide impact. Considering the misuse of plastics and its consequences, the plastics industry is actively researching additional solutions to dispose of existing plastic products, as well as developing new materials whose mechanical properties are similar to known materials but which are simpler to dispose of. [0004] In particular, the study of biodegradable materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02
CPCC08L75/06C08K5/0016C08L67/02C08L2666/20C08L75/04
Inventor S·布鲁内蒂
Owner A P I APPL