Continuous polymerization process using intensely stirred vessels

一种聚合工艺、剧烈搅拌的技术，应用在聚合工艺领域，能够解决断丝率降低等问题

Inactive Publication Date: 2013-04-03
RELIANCE INDUSTRIES LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The yarn obtained from this process has a high degree of uniformity, and the rate of broken filaments during melt spinning is greatly reduced

Method used

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Examples

Experimental program
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Embodiment Construction

[0052] The description of the above specific embodiments will fully reveal the general nature of the embodiments of the present invention, as long as it is within the scope of the general concept, others can easily modify and / or adjust such specific embodiments for various applications by applying current knowledge, thus However, such adjustments and changes should not depart from the spirit and scope of equivalent scope of the disclosed embodiments. It is to be understood that the phraseology and terminology employed herein are for the purpose of description only and not of limitation. Therefore, although the embodiments of the present invention are described as preferred embodiments, those skilled in the art should understand that the embodiments of the present invention should be modified within the spirit and scope of the appended claims.

[0053] A "small" vessel as referred to herein refers to a vessel that is relatively small relative to a large unstirred or insufficien...

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Abstract

A continuous polymerization process where one or more stirred vessels(intermittent reactor vessels) are employed in oligomer transfer line for mixing additives. An additive is added in the stirred vessel either as a solution or as slurry. The additive may or may not be reactive with the other monomer of the polyester molecule. The additive reacts with the monomer and incorporates in the polymer backbone in one of the embodiment. One or more further additives are mixed with the pre-reactor monomer mix and are charged in the first reactor or charged through the stirred vessel in the form of single slurry or solution or multiple slurries or solutions. Any further vessels employed provide higher residence time proportionate to output and use of such vessels in reactor system is independent of the any further additives.

Description

technical field [0001] The present invention relates to a polymerization process for the production of condensation polymers, yarns and the like. Background technique [0002] Continuous polymerization in the production of products such as yarn has traditionally been performed as a batch process, which is costly, time consuming and produces a product that lacks uniformity. For example, viscosity tends to vary from batch to batch and as the polymer is extruded from the reactor into strands, resulting in poor spinning quality and high pressure rise between the polymer line and the spin pack , More broken spinning and poor post-processing performance (broken filaments on deformed yarn shafts). Some methods do mention the use of various continuous processes, such as the use of additives, but with that comes polymerisation temperature, spin pack pressure, lower evenness and higher filament breakage. [0003] Cationic dye-dyeable polyesters (PET) are usually incorporated as como...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/78C08G63/02C08G63/183D01F6/62D01F1/02D01D5/08
CPCC08G63/785D01F6/62C08G63/6886
Inventor 乌代·杉卡·阿加瓦尔拜德·帕里什·米斯拉奎施那·斯瑞尼瓦斯·拉奥S·温卡塔查拉姆拉吉夫·迪克西特阿什温·库马尔·杰恩阿尼尔·克里希纳·凯尔卡
Owner RELIANCE INDUSTRIES LIMITED
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