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Polycarbonate-polyorganosiloxane copolymer, method for producing same, and resin composition comprising same

A technology of polyorganosiloxane and polycarbonate, which is applied in the field of polycarbonate-polyorganosiloxane copolymer, can solve problems such as economic disadvantages and achieve high transparency

Pending Publication Date: 2022-03-01
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, dichloromethane, which has a large environmental burden, needs to be used as a solvent in the polymerization reaction system, and its removal requires a large degasser and a large amount of energy, which is economically disadvantageous.

Method used

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  • Polycarbonate-polyorganosiloxane copolymer, method for producing same, and resin composition comprising same
  • Polycarbonate-polyorganosiloxane copolymer, method for producing same, and resin composition comprising same
  • Polycarbonate-polyorganosiloxane copolymer, method for producing same, and resin composition comprising same

Examples

Experimental program
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Embodiment

[0267] Hereinafter, the present invention will be described in more detail through examples, but the present invention is not limited to these examples.

[0268] The characteristic values ​​in each example were obtained according to the procedure shown below.

[0269]

[0270] The measurement of the hexane extraction amount was performed by the following method.

[0271] The particles of the polycarbonate-polyorganosiloxane copolymer obtained in the following examples and comparative examples were pulverized by a crusher, and the obtained samples were removed by passing through a 20-mesh (mesh) (mesh opening: 0.84 mm) Insufficiently pulverized large pieces were then sieved on a 300-mesh mesh (mesh opening: 0.055 mm), and a sample remaining on the mesh was collected as a sample for hexane extraction, thereby removing excessively pulverized fine powder.

[0272] Next, about 15 g of the sample for hexane extraction obtained by the above method was accurately weighed, put into ...

manufacture example 1

[0343] Production Example 1: Production of PDMS-1

[0344] Under a nitrogen atmosphere, in polyorganosiloxane (100 g) having a siloxane average chain length of 24 represented by the following general formula,

[0345] 【Chemical 26】

[0346]

[0347] Polyethylene glycol (82.3 g) having an average oxyethylene chain length of 15 represented by the following general formula was added.

[0348] 【Chemical 27】

[0349] h 2 C=CH-CH 2 -O-(CH 2 CH 2 O) 15 -H

[0350] After adding 455 g of isopropyl alcohol (2.5 parts with respect to the total mass of polyorganosiloxane and polyethylene glycol) there, the temperature of the mixture was controlled at 80° C. and fully stirred. Next, a toluene solution of a platinum vinylsiloxane complex was added in such an amount that the mass of platinum atoms relative to the siloxane was 5 mass ppm, and stirred for 10 hours. The polyether-modified polyorganosiloxane PDMS-1 was obtained by removing isopropanol and the platinum catalyst from t...

manufacture example 2

[0351] Production Example 2: Production of PDMS-2

[0352] It produced in the same manner as in Production Example 1 except that α,ω-dihydroorganopolysiloxane having an average siloxane chain length of 61 was used.

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Abstract

The present invention addresses the problem of providing a polycarbonate-polyorganosiloxane copolymer having high transparency, which is obtained by a method other than an interfacial polymerization method. The present invention provides a polycarbonate-polyorganosiloxane copolymer which has a polyorganosiloxane block (A-1) that contains a specific repeating unit and a polycarbonate block (A-2) that is formed from a specific repeating unit, and which is produced using a diol monomer (a1) and a polyorganosiloxane (a2) that satisfy the following conditions, the polycarbonate-polyorganosiloxane copolymer is characterized in that the haze value of a mixture obtained by contacting the diol monomer (a1), the polyorganosiloxane (a2), the diester carbonate, and the basic catalyst at 100-250 DEG C for 0.5-5 hours, said amounts of the diol monomer (a1), the polyorganosiloxane (a2), the diester carbonate, and the basic catalyst being the same as when producing the polycarbonate-polyorganosiloxane copolymer, is 30 or less as measured in accordance with ISO 14782: 1999 under conditions of 23 DEG C and an optical path length of 10 mm.

Description

technical field [0001] The present invention relates to a polycarbonate-polyorganosiloxane copolymer, a method for producing the same, and a resin composition containing the copolymer. Background technique [0002] Polycarbonate resins are engineering plastics that are excellent in transparency and mechanical properties, and have very high impact resistance. It is known that a polycarbonate-polyorganosiloxane copolymer obtained by copolymerizing polysiloxane and polycarbonate has excellent low-temperature impact resistance and excellent chemical resistance while maintaining high transparency. [0003] In general, known methods for producing polycarbonate resins include a method of directly reacting an aromatic dihydroxy compound with phosgene (interfacial polycondensation method), or melting an aromatic dihydroxy compound and a carbonic acid diester. The method (melt polymerization method) of transesterification reaction in the state. [0004] In many cases, polycarbonate-...

Claims

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Application Information

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IPC IPC(8): C08G64/18C08G64/30C08L69/00C08K7/14C08K7/06C08G77/38C08G77/46
CPCC08G64/186C08G64/183C08G64/307C08G64/305C08G77/46C08G77/38C08K7/14C08K7/06C08L69/00
Inventor 薮上稔山尾忍
Owner IDEMITSU KOSAN CO LTD