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Polymer production method, polymer product, particles, film, molded article, and fibers

A manufacturing method and polymer technology, applied in the direction of single-component synthetic polymer rayon, textile and papermaking, fiber chemical characteristics, etc., can solve the problems of unsuitable free radical polymerization, widening molecular weight distribution of polymer products, etc. The effect of easy polymerization

Inactive Publication Date: 2016-07-06
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, free radical polymerization has the disadvantage of broadening the molecular weight distribution of the obtained polymer product
Free radical polymerization may not be suitable for uses of the polymer product that require a narrow molecular weight distribution as in the case where block copolymers are produced

Method used

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  • Polymer production method, polymer product, particles, film, molded article, and fibers
  • Polymer production method, polymer product, particles, film, molded article, and fibers
  • Polymer production method, polymer product, particles, film, molded article, and fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] by image 3 The polymerization reaction device 200 performs the polymerization of methyl methacrylate (MMA). Note that the 1 / 4 inch SUS316 pipe is sandwiched between the valves (24, 29) and used as the feeding pot 25. The feeding pot 25 was previously charged with tin 2-ethylhexanoate (0.02 mL, 0.05 mmol) as a reducing agent.

[0149] To the reaction vessel 27 were added copper chloride (70.0 mg, 0.5 mmol) as a catalyst, tris[2-(dimethylamino)ethyl)amine (manufactured by Sigma-Aldrich Co., LLC.) as a ligand for the ATRP catalyst. Manufacturing) (0.244 g, 1.10 mmol), and ethyl 2-bromoisobutyrate (0.45 g, 0.0024 mol) as an ATRP initiator. Methyl methacrylate (MMA) (50.0 mL, 0.47 mol) from which the polymerization inhibitor has been removed through the alumina column was added to the reaction vessel 27 in such a manner that the molar ratio of the monomer to the initiator was 2,000 / 1.

[0150] The metering pump 22 is operated, and the valves (23, 26) are released to supply the...

Embodiment 2

[0152] The polymers of Examples 2-5 were each obtained in the same manner as in Example 1, provided that the initiator was replaced with an equimolar amount of the following bifunctional initiator (Example 2), trifunctional initiator (implementation Example 3), tetrafunctional initiator (Example 4), or hexafunctional initiator (Example 5). The physical properties of the obtained polymer measured by the above method are shown in Table 1.

[0153]

Embodiment 6-9

[0155] The polymers of Examples 6-9 were each obtained in the same manner as in Example 1, provided that the reaction temperature and reaction pressure were changed as depicted in the column of Examples 6-9 in Table 2, respectively. The physical properties of the obtained polymer measured by the above method are shown in Table 2.

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Abstract

A method for producing a polymer, which contains: bringing a monomer containing a vinyl bond into contact with a compressive fluid and melting or dissolving the monomer containing a vinyl bond, followed by carrying out addition polymerization of the monomer containing a vinyl bond in the presence of an initiator.

Description

Technical field [0001] The present invention relates to an invention in which a monomer containing a vinyl bond is polymerized by addition polymerization. Background technique [0002] Radical polymerization is a polymerization method in which radicals are generated by decomposition using an initiator to perform addition polymerization of monomers containing vinyl bonds, and is widely used industrially. However, free radical polymerization has the disadvantage of broadening the molecular weight distribution of the obtained polymer product. Free radical polymerization may not be suitable for use of polymer products that require a narrow molecular weight distribution, as in the case where block copolymers are manufactured. [0003] For polymerization methods that can solve the disadvantages of free radical polymerization, living radical polymerization has been used in industry. In living radical polymerization, the active site is maintained at the end of the polymer, and therefore ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/06C08F12/08C08F20/02D01F6/38
CPCC08F20/02C08F2/04C08F2438/01C08F2438/03D01F6/16D01F6/22D01F6/24D01F6/26C08F12/08C08F2/06C08F20/14C08F220/14C08F212/08C08F220/06C08F2/60C08J5/18D01F6/38C08F2/12C08F14/14C08F18/08C08F20/10C08F20/34C08F20/44C08F20/56C08F2400/00
Inventor 根本太一新井阳子和泉贤平野滋大清水孝幸田中千秋
Owner RICOH KK
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