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Rigid polyvinyl chloride copolymer, method for producing rigid polyvinyl chloride copolymer, composition comprising rigid polyvinyl chloride copolymer, and resin product produced from composition

A vinyl chloride and copolymer technology, applied in the field of vinyl chloride resin synthesis, can solve the problems of no industrial application value, difficulty in realizing self-plasticization, poor product structure control, etc., achieve good biocompatibility, improve self-increasing Plasticity, no cytotoxic effects

Active Publication Date: 2021-03-30
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the living polymerization method is suitable for adjusting the structure of the obtained copolymer resin, this technology has high requirements on the production process and high cost. In addition, there are residual metal ions in the product, and there are deficiencies such as complicated post-processing, and it has no industrial application value.
[0011] As mentioned above, most of the currently disclosed technologies are only in the stage of scientific research, and the industrial practical value is not high; while the technologies suitable for industrial production are often difficult to achieve excellent Self-plasticizing and poor control over product structure

Method used

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  • Rigid polyvinyl chloride copolymer, method for producing rigid polyvinyl chloride copolymer, composition comprising rigid polyvinyl chloride copolymer, and resin product produced from composition
  • Rigid polyvinyl chloride copolymer, method for producing rigid polyvinyl chloride copolymer, composition comprising rigid polyvinyl chloride copolymer, and resin product produced from composition

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preparation example Construction

[0123]

[0124] The preparation method of the rigid vinyl chloride copolymer of the present invention is the preparation method of the above rigid vinyl chloride copolymer, which comprises: comprising vinyl chloride, monomers represented by the above formula (1) and optional above formula The raw materials of the monomers shown in (2) are copolymerized.

[0125] The details of vinyl chloride, the monomer represented by formula (1), the monomer represented by formula (2) and other monomers have been described above, and will not be repeated here.

[0126] Examples of copolymerization reactions of the present invention include, without limitation, block polymerization, random polymerization, graft polymerization, gradient polymerization. Among them, random polymerization is preferable from the viewpoint of expressing the technical effect of the present application more favorably, that is, the molecular chain of the rigid vinyl chloride-based copolymer of the present invention ...

Embodiment 1

[0183] In a stainless steel micro-reactor with an internal volume of 200ml of stirring blades, 100g of deionized water, 10.4g of 2 mass % PVA aqueous solution, 0.042g of hydroxypropylmethylcellulose, 0.05g of azobisisobutyronitrile, 1.62 g of polypropylene glycol monomethacrylate with a molecular weight of 375 (PPGMA-375, the case where x=5 in formula (1)) was filled with nitrogen for 5 minutes to replace the air in the reaction vessel. Then, 52.38 g of VC monomer was introduced into the reactor. After pre-stirring for 60 minutes, the temperature was raised to 70°C to start polymerization. It should be noted that the monomer feeding mass ratio VC:PPGMA-375=97:3, and the polymerization reaction time was 8 hours. After the polymerization reaction was completed, unreacted VC monomer was reclaimed, and the polymerization product was alternately washed with a large amount of deionized water and ethanol to obtain 50.5 g of the vinyl chloride copolymer of white solid particles, and i...

Embodiment 2

[0185] Change the feed mass ratio of VC and PPGMA-375 to be VC:PPGMA-375=95:5 and the polymerization reaction time is 7.5 hours, except that, in the same manner as in Example 1, obtain the vinyl chloride copolymerization of white solid particles 51.2 g of the product, the composition: the content of the structural unit (a) was 96.4% by mass, and the content of the structural unit (b) was 3.6% by mass based on the total mass of the vinyl chloride-based copolymer.

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Abstract

The present invention relates to a rigid polyvinyl chloride-based copolymer, a method for preparing the rigid polyvinyl chloride copolymer, a composition comprising the rigid polyvinyl chloride copolymer, and a resin product made from the composition. The rigid vinyl chloride-based copolymer comprises a vinyl chloride-based structural unit (a), a structural unit (b) based on a monomer representedby formula (1) of CH2=CR1COO(R2O)xR3, and optionally a structural unit (c) based on a monomer represented by formula (2) of CH2=CR4COOR5, and the total content of the structural unit (b) and the structural unit (c) is 2-20% by mass relative to the total mass of the vinyl chloride-based copolymer.

Description

technical field [0001] The invention relates to the field of vinyl chloride resin synthesis, in particular to a rigid vinyl chloride copolymer, a preparation method thereof, a composition comprising the same and a resin product made from the composition. Background technique [0002] Polyvinyl chloride (PVC) resin is formed by free radical polymerization of vinyl chloride monomer (VC). It is one of the five general-purpose resins in synthetic materials. Its output is second only to polyethylene and polypropylene, ranking third in the world for general-purpose plastics. . Due to its excellent chemical resistance, chemical stability, thermoplasticity and low manufacturing cost, PVC resin is widely used in construction, water supply, daily use and biomedical fields. [0003] Due to the relatively large polarity of the PVC molecular chain, the movement of the molecular chain is restricted, which increases the processing difficulty of PVC resin. Therefore, plasticizers should b...

Claims

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Application Information

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IPC IPC(8): C08F214/06C08F220/28C08F220/18
CPCC08F214/06
Inventor 杨万泰张先宏宋长统马育红
Owner BEIJING UNIV OF CHEM TECH
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