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Polymer product and production method thereof, and molded product

A manufacturing method and polymer technology, applied in the direction of chemical recycling, etc., can solve the problems of high crystallinity, poor diversity, insufficient monomer structure, etc., and achieve the effect of high toughness and high flexibility

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

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Problems solved by technology

[0007] However, under current circumstances, biodegradable polyesters may only have limited applications because of their poor diversity of monomer structures and insufficient strength and heat resistance.
For example, polylactic acid has such disadvantages among biodegradable polyesters that it has high crystallinity and is brittle, and is limited to the field of hard molded products
However, according to the proposed technique, the viscosity of the material increases as the reaction proceeds and the solid solidifies, resulting in a monomer residual ratio of several percent when no refining operation is performed

Method used

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  • Polymer product and production method thereof, and molded product
  • Polymer product and production method thereof, and molded product
  • Polymer product and production method thereof, and molded product

Examples

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no. 1 approach

[0189]Next, a continuous production method of a polymer product using the polymerization reaction apparatus 100 (first embodiment) will be explained. In the present embodiment, the ring-opening polymerizable monomer, compressive fluid, and other components as needed are continuously supplied and contacted with each other, and the ring-opening polymerizable monomer is continuously ring-opened polymerized, thereby continuously obtaining polymer product. In this case, the metering feeders (2 and 4), metering pump 6 and metering pump 8 are started, and the ring-opening polymerizable monomer, initiator, Additives and compressive fluid are fed continuously into the contact zone 9 . In supplying the catalyst into the contact region 9, it may be supplied together with the ring-opening polymerizable monomer, initiator, additive, and compressive fluid, or it may be supplied in order of additional tanks. The catalyst can be added in the reaction zone 13 (late addition) instead of in th...

no. 2 approach

[0205]Next, the second embodiment will be explained in terms of differences from the first embodiment. In the production method of the first embodiment, the reaction proceeds quantitatively with substantially no residual monomers. Utilizing this characteristic, the first method of the second embodiment synthesizes by polymerizing the polymer product produced by the production method according to the first embodiment and another one or more further kinds of ring-opening polymerizable monomers Complex polymer product. The second method of the second embodiment forms a composite body by continuously mixing one or more kinds of polymers including the polymer product produced according to the production method of the first embodiment in the presence of a compressive fluid. In this embodiment, "composite" refers to a copolymer including two or more kinds of polymer segments obtained by polymerizing monomers through multiple separate systems, or polymerizing monomers through multipl...

no. 3 approach

[0226] Next, the third embodiment will be explained in terms of differences from the first embodiment. In a third embodiment, the polymer product is produced by a batch process. First, refer to Figure 7 A polymerization apparatus 400 used in a batch process is explained. Figure 7 is a system diagram showing the steps of a batch polymerization. exist Figure 7 In the system diagram of , the polymerization reaction equipment 400 includes a tank 121, a metering pump 122, a feed pot 125, a reaction vessel 127 and valves (123, 124, 126, 128 and 129). These devices such as Figure 7 are connected to each other through a pressure-resistant pipe 130 as shown in . Tube 130 is provided with joints (130a and 130b).

[0227]Tank 121 stores compressive fluid. The tank 121 may store a gas or solid that is converted into a compressive fluid by a process of supplying to the reaction vessel 127, or in the reactor 127 by heating or pressurization. In this case, the gas or solid stored...

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Abstract

Provided is a polymer product having a branched chain made of polyester, and a weight average molecular weight of 200,000 or greater when measured by gel permeation chromatography.

Description

technical field [0001] The present invention relates to a polymer product and a method for producing a polymer product and a shaped product. Background technique [0002] General-purpose resins made from petroleum such as polyethylene, polypropylene, polyvinyl chloride, and polystyrene are used in various fields including daily necessities, household appliances, auto parts, construction materials, and food packaging because of their properties such as lightweight , favorable machinability, physical properties and durability properties. [0003] However, the favorable durability of these resin products becomes a disadvantage when they are disposed of after use. They have poor natural degradability and can have an impact on the ecosystem. [0004] In order to solve this problem, a large amount of development is currently being carried out on biodegradable polyester, the starting material of biodegradable polyester is a recyclable resource, and a representative example of bio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/08
CPCC08G63/08Y02P20/582C08J5/00C08G63/78C08G2230/00C08J5/18C08J2367/04
Inventor 镰田靖男根本太一新井阳子和泉贤
Owner RICOH KK