Method for preparing PVC (Poly Vinyl Chloride) special dispersant from enteromorpha as raw material

A dispersant and raw material technology, which is applied in the field of preparing PVC special dispersant, can solve the problems of affecting the quality of profiles, caking and precipitation of stabilizers, and easy decomposition, etc., and achieve the effects of avoiding agglomeration and precipitation, reducing pollution and high molecular affinity

Inactive Publication Date: 2013-03-20
QINGDAO XINWANTONG PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] PVC is easy to decompose during processing, and a stabilizer must be added to make it process smoothly, and the stabilizer is prone to agglomeration and precipitation during processing, which seriously affects the quality of the profile

Method used

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Embodiment 1

[0009] Enteromorpha is used as raw material, dehydrated, dried, crushed evenly, and refined, then hydrolyzed with 6mol / L concentrated hydrochloric acid, ultrasonically extracted cellulose, and etherified cellulose under alkaline conditions to produce hydroxypropyl methyl Cellulose, after combining hydroxypropyl methylcellulose and polyvinyl alcohol, it is made into a special dispersant for PVC.

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Abstract

The invention discloses a method for preparing a PVC (Poly Vinyl Chloride) special dispersant from enteromorpha as the raw material. The method comprises the following steps of: on the basis of taking the enteromorpha as the raw material, dehydrating, drying, smashing evenly and refining to extract cellulose; preparing hydroxypropyl methyl cellulose from the cellulose through etherification under the alkaline condition; and combining the dispersant with polyving alcohol dispersant for use. The dispersant provided by the invention is high in affinity with polyvinyl chloride molecules so that the compound stabilizer is easy to disperse in PVC, thereby generating ultra-dispersion effect; and phenomenona of agglomeration and separation of the compound stabilizer and the like in the PVC processing course are avoided.

Description

technical field [0001] The invention relates to a preparation method of a chemical auxiliary agent, in particular to a method for preparing a PVC special-purpose dispersant by using enteromorpha as a raw material. Background technique [0002] PVC is easy to decompose during processing, and a stabilizer must be added to make it process smoothly, and the stabilizer is prone to agglomeration and precipitation during processing, which seriously affects the quality of the profile. [0003] Affected by the discharge of industrial wastewater and domestic sewage, the eutrophication of seawater is increasing day by day, so the outbreaks of Enteromorpha are becoming more frequent and more serious. Therefore, how to quickly dispose of Enteromorpha and reduce pollution has become a key issue in environmental protection. major issues. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a new type of dispersant which can easily ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L1/26
Inventor 高义金
Owner QINGDAO XINWANTONG PLASTIC IND
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