Elastomer composition

A composition and derivative technology, applied in the direction of rigid containers, types of packaging items, special packaging items, etc., can solve problems that have not yet been discovered, reliability problems, unsatisfactory gamma-ray sterilization resistance, etc.

Inactive Publication Date: 2008-04-30
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, not only polybutadiene is unsatisfactory in gamma-ray sterilization resistance, but also has reliability problems when joining the pipe with other parts due to its resistance to solvent adhesion
[0010] As already stated above, conventional alternatives to DOP-containing soft PVC have both advantages and disadvantages, and there is no guarantee that it will replace soft PVC
[0011] On the other hand, conventional chlorinated polyolefins and compositions thereof lack satisfactory transparency and mechanical strength, and said materials have not been found to meet these requirements while also achieving solvent adhesion properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] High-pressure ethylene / α-olefin copolymer pellets (Japan Polyethylene Corporation, Kernel) with a melt flow rate (MFR) of 17 g / 10 minutes and a density of 0.912 under a load of 2.16 kg and a temperature of 190° C. were crushed to The average particle diameter was 350 μm to obtain a raw material polyolefin, followed by chlorination in an aqueous suspension at 75° C. to a chlorine content of 30 mass % using a 100 L glass-lined autoclave.

[0066] The resulting chlorinated polyolefin was in the form of a white powder, had an MFR of 120 g / 10 minutes under a load of 21.6 kg and a temperature of 180° C., and a crystal fusion heat of 30 J / g as measured by the DSC method.

[0067] 5 parts by mass of epoxidized soybean oil (Asahi Denka Co., Ltd., O-130P, which will be applied similarly below), 0.5 parts by mass of hydrotalcite (Kyowa Chemical Industry Co., Ltd., DHT-4A, which will be used below similarly applied) and 0.2 parts by mass of a lubricant in the form of monoglyceride ...

Embodiment 2

[0069] A high-density polyethylene powder (Japan Polyethylene Corporation, Novatec) with an MFR of 7.5 g / 10 min and a density of 0.956 under a load of 2.16 kg and a temperature of 190° C. was crushed to an average particle size of 250 μm to obtain a raw poly Olefins were then chlorinated in aqueous suspension at 115° C. to a chlorine content of 25% by mass using a 100 L glass-lined autoclave. Thereafter, the supply of chlorine gas was interrupted, the temperature was raised to 134° C. and then lowered to 107° C., and then the supply of chlorine gas was restarted at 107° C. and chlorinated to a total chlorine content of 35% by mass.

[0070] The resulting chlorinated polyolefin was in the form of a white powder, had an MFR of 50 g / 10 minutes under a load of 21.6 kg and a temperature of 180° C., and a crystal fusion heat of 39 J / g as measured by the DSC method. A lubricant in the form of 10 parts by mass of epoxidized soybean oil, 0.5 parts by mass of hydrotalcite and 0.2 parts ...

Embodiment 3

[0072] Example 3 was carried out in the same manner as in Example 1 using the chlorinated polyolefin of Example 1, except that the amount of epoxidized soybean oil was changed to 10 parts by mass.

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Abstract

A chlorinated polyolefin composition, including 100 mass parts of a chlorinated polyolefin, 1 to 15 mass parts of an epoxy derivative, and 0.05 to 3 mass parts of a stabilizer. The chlorinated polyolefin is obtained by chlorinating a polyolefin being selected from ethylene homopolymer or ethylene-alpha-olefin copolymer, and has a density of 0.90 or more; and the chlorinated polyolefin has a chlorine content of 25 to 45 % by mass, a melt flow rate of 0.1 to 300 g / 10 minutes, and a heat of crystal fusion as determined by DSC of 20 to 60 J / g. The epoxy derivative is selected from epoxidized unsaturated oil, and epoxidized unsaturated fatty acid ester, epichlorhydrin derivative and epoxycyclohexane derivative, and the stabilizer is selected from a hydrotalcite minerals.

Description

[0001] Cross References to Related Applications [0002] This application is based upon an application filed under 35 U.S.C. § 111(a) pursuant to 35 U.S.C. § 119(e), claiming the filing date of provisional application 60 / 687,322 filed June 6, 2005 under 35 U.S.C. § 111(b) rights and interests. technical field [0003] The present invention relates to a chlorinated polyolefin and a composition containing the chlorinated polyolefin. More specifically, the present invention relates to a chlorinated polyolefin and compositions containing the same, which are suitable as thermoplastic elastomers for the construction of pipes, sheets, films, etc. for medical, food and other industrial applications. It is a solid material with excellent transparency, mechanical strength, gamma-ray resistance stability and solvent bonding performance, and excellent safety basically free of plasticizers. Background technique [0004] Chlorinated polyolefins are chlorinated products obtained by chlor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28A61J1/00A61L29/00B65D1/00C08K3/26C08K5/1515
Inventor 小西淳菅原笃
Owner SHOWA DENKO KK
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