Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of soft product plastic special polyvinyl chloride resin

A technology of polyvinyl chloride resin and soft products, which is applied in the field of preparation of polyvinyl chloride resin for soft product plastics. It can solve the problems of low apparent density and oil absorption rate, poor transparency of products, and large use limitations, and achieve low Apparent density, improvement of whiteness and thermal stability, effects of narrow molecular weight distribution

Inactive Publication Date: 2017-02-08
SHAANXI BEIYUAN CHEM GROUP
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most SG-5 polyvinyl chloride resins in China are general-purpose resins, which are limited in use in downstream resin processing enterprises. Most of them are hard products, with low apparent density and oil absorption, coarse particles, slow plasticization, and transparent products. bad sex

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The preparation method of polyvinyl chloride resin special for soft product plastics of the present invention comprises the following steps:

[0017] First mix the mixed dispersant (saponified polyvinyl alcohol KH-20, KH-17, KP-08R, L-11, LM-10HD at a mass ratio of 1:1.5:0.5:0.5, and then prepare 4% Aqueous solution) and deionized water are added to the reaction kettle in turn, stirred evenly, the pH value of the solution is adjusted to 6-7, and then the initiators (tert-butyl peroxyneodecanoate Trigonox23-C75 and or isopropyl peroxyneodecanoate A mixture of phenyl ester Trigonox99-C75 according to the mass ratio of 8:1), vinyl chloride monomer and defoamer (tert-butyl peroxyneodecanoate KLD-920, or S-102 defoamer and YL-X-2 One of the defoamers or the mixture according to (0.2:1) mass ratio), stir evenly, by controlling the mixer speed to 62.5r / min during stirring, after 20min low speed stirring, switch to 125r / min high speed stirring until the end of the reaction. A...

Embodiment 1

[0020] Embodiment 1 (small kettle test)

[0021] Add 60g of composite dispersant and 4.1kg of deionized water into the polymerization kettle in sequence, stir evenly, adjust the pH value of the solution to 6-7, then add 3.1g of composite initiator, 3.8kg of vinyl chloride monomer, and 1.5g of defoamer in sequence (tert-butyl peroxyneodecanoate KLD-920), stir evenly, control the temperature in the reactor to 58°C, control the reaction pressure at 0.83MPa, control the low speed of the mixer to 62.5r / min, after stirring for 20min, switch to 125r Stir at high speed per minute, polymerize for 4.5 hours, add 5.2g of terminator, and obtain high-end polyvinyl chloride resin for soft product plastics.

Embodiment 2

[0022] Embodiment 2 (small kettle test):

[0023] Add 67g of composite dispersant and 4.5kg of deionized water into the polymerization kettle in sequence, stir evenly, adjust the pH value of the solution to 6-7, then add 3.9g of composite initiator, 3.9kg of vinyl chloride monomer, and 1.95g of defoamer in sequence (A mixture of S-102 defoamer and YL-X-2 defoamer in a mass ratio of (0.2:1), stir evenly, control the temperature in the reactor to 60°C, control the reaction pressure at 0.85MPa, and control the mixer The low-speed rotation speed is 62.5r / min. After stirring for 20min, switch to 125r / min high-speed stirring. After polymerization for 4 hours, add 6.25g of terminator to obtain high-end polyvinyl chloride resin for soft product plastics.

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
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
melt flow indexaaaaaaaaaa
oil absorptionaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of soft product plastic special polyvinyl chloride resin, wherein the preparation method comprises the following steps: successively adding a dispersing agent and deionized water into a reaction kettle, stirring evenly, and adjusting the pH value of the solution to 6-7; followed by successively adding an initiator, a vinyl chloride monomer and a defoaming agent, controlling the stirring speed, stirring evenly, heating to 58+ / -2 DEG C, controlling the kettle pressure, and carrying out a reaction for 4-5 hours; and adding a terminator, carrying out gas extraction and drying to obtain the high-end polyvinyl chloride resin soft product. The soft product plastic special polyvinyl chloride resin has the advantages of low apparent density, high oil absorption rate, small average particle size, and good plasticization performance, and the product has the characteristics of high processing transparency, low processing torque, and large melt index; the soft product plastic special polyvinyl chloride resin can replace ethylene-process PVC, can be widely applied in preparation of thin films, leather cloth, plastic sandals, shoe soles and various soft products, and is the soft product special polyvinyl chloride resin having good processing performance.

Description

technical field [0001] The invention relates to the technical field of chemical resins, in particular to a preparation method of polyvinyl chloride resin special for soft product plastics. Background technique [0002] At present, most SG-5 polyvinyl chloride resins in China are general-purpose resins, which are limited in use in downstream resin processing enterprises. Most of them are hard products, with low apparent density and oil absorption, coarse particles, slow plasticization, and transparent products. Poor sex. However, foreign resin special materials have a wide range of applications. For different downstream targeted products, it is necessary to develop a high-end polyvinyl chloride resin with low apparent density, high oil absorption rate, good plasticizing performance, and loose resin, which is specially used for plastics of soft products. Contents of the invention [0003] The purpose of this invention is to provide a kind of preparation method of special-p...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F114/06C08F2/18C08F2/20C08F4/38C08L27/06
CPCC08F114/06C08F2/18C08F2/20C08F4/38C08L27/06C08F2500/03
Inventor 刘延财王奋中张友平雷强包飞刘勇张建宏
Owner SHAANXI BEIYUAN CHEM GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com