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

Aliphatic polycarbonate resin composition

A technology of polycarbonate resin and polypropylene carbonate, which is applied in the field of aliphatic polycarbonate resin composition, can solve problems such as decreased transparency, and achieve the effect of improving transparency

Inactive Publication Date: 2014-01-29
SUMITOMO SEIKA CHEM CO LTD
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding these properties-improving materials is also effective in preventing aliphatic polycarbonate from solidifying and blocking, but transparency may decrease

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aliphatic polycarbonate resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] Hereinafter, the present invention will be specifically described with reference to production examples, examples, and comparative examples, but the present invention is not limited to these examples.

[0056] [evaluate]

[0057] The number average molecular weights of the aliphatic polycarbonate resins obtained in the production examples and the tensile strengths of the aliphatic polycarbonate resin compositions obtained in the examples and comparative examples were measured and evaluated by the following methods.

[0058] (1) Determination of number average molecular weight

[0059] A chloroform solution having an aliphatic polycarbonate resin concentration of 0.5% by mass was prepared and measured by high performance liquid chromatography. The molecular weight was calculated by comparing the number average molecular weight measured under the same conditions with known polystyrene. In addition, measurement conditions are as follows.

[0060] Model: HLC-8020 (manufa...

manufacture example 1

[0079] [Manufacture example 1] (manufacture of organozinc catalyst)

[0080] 8.1 g (100 mmol) of zinc oxide, 12.7 g (96 mmol) of glutaric acid, 0.1 g (2 mmol ) and toluene 130g (150mL). Next, after replacing the inside of the reaction system with a nitrogen atmosphere, the temperature was raised to 55° C., and the mixture was stirred and reacted at this temperature for 4 hours. Then, the temperature was raised to 110° C., and stirred at this temperature for 4 hours to perform azeotropic dehydration to remove only water, and then cooled to room temperature to obtain a reaction solution containing an organozinc catalyst.

[0081] The organozinc catalyst obtained by fractionating and filtering a part of the reaction liquid was measured for IR (manufactured by Thermonicore Japan Co., Ltd., trade name: AVATAR360), but no peak due to carboxylic acid groups was confirmed.

manufacture example 2

[0082] [Manufacture example 2] (manufacture of polypropylene carbonate)

[0083] After replacing the system of a 1-L autoclave equipped with a stirrer, a gas introduction tube, and a thermometer with a nitrogen atmosphere, 8.0 mL of the reaction solution containing the organozinc catalyst obtained in Production Example 1 (containing 1.0 g of the organozinc catalyst), 131 g (200 mL) of hexane and 46.5 g (0.80 mol) of propylene oxide. Next, carbon dioxide was added with stirring, the inside of the reaction system was replaced with a carbon dioxide atmosphere, and carbon dioxide was filled until the inside of the reaction system reached 1.5 MPa. Then, the temperature was raised to 60° C., and a polymerization reaction was performed for 6 hours while replenishing carbon dioxide consumed by the reaction.

[0084] After the reaction, the autoclave was cooled, depressurized, filtered and dried under reduced pressure to obtain 80.8 g of polypropylene carbonate. The number average mo...

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
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides the transparency, the blocking resistance, and the aliphatic family polycarbonate resin composition with an excellent machine strength. The polycarbonate resin composition of the present invention contains the amorphous silica about the aliphatic polycarbonate resin 100 parts by mass at a ratio of 0.05-4 parts by mass.

Description

technical field [0001] The present invention relates to aliphatic polycarbonate resin compositions. More specifically, it relates to an aliphatic polycarbonate resin composition excellent in transparency, blocking resistance and mechanical strength. Background technique [0002] Since the Industrial Revolution, human beings have built modern society through massive consumption of fossil fuels, but on the other hand, the concentration of carbon dioxide in the atmosphere has increased, and this increase has also been contributed to by environmental damage such as deforestation. The cause of global warming is the increase of greenhouse effect gases such as carbon dioxide, freon, and methane in the atmosphere. Therefore, it is extremely important to reduce the concentration of carbon dioxide in the atmosphere, which has a high rate of induction of global warming, and its emissions are being carried out around the world. Various studies such as restriction and immobilization. ...

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): C08L69/00C08K3/36C08G64/32
CPCC08G64/02C08G64/34C08K3/36C08L69/00
Inventor 竹森信一藤本信贵
Owner SUMITOMO SEIKA CHEM CO LTD
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