Water pipeline equipment made of 1-butenes polymer composition

A technology of water pipes and polymers, which is applied in the direction of mechanical equipment, pipes, rigid pipes, etc., can solve the problems of durability of resin pipes, accelerate the peeling of resin on the surface of blisters, etc., and achieve easy quality management and inventory management, crystallization transition time Short, chlorine water resistance and good pigment dispersion effect

Inactive Publication Date: 2004-10-20
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, resin pipes containing furnace carbon black are known to accelerate blister generation, rupture, and peeling of surface resin due to the presence of chlorine, so there are still problems in the durability of resin pipes (Patent Document 5)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0036]

[0037] 100 parts by weight of 1-butene monopolymer (manufactured by Mitsui Chemicals, Inc., P5050) and 40 parts by weight of acetylene black (manufactured by Denki Kagaku Kogyo Co., Ltd., DENKA BLACK powder, DENKABLACK HS-100 or DENKA BLACK FX-35), A twin-screw extruder was used to melt and knead at a molding temperature of 200° C. to prepare a high-concentration masterbatch in which the content of acetylene black relative to the 1-butene monomer was 40% by weight.

[0038] The obtained masterbatch and the above-mentioned 1-butene monomer are melted and kneaded with a single-screw extruder at a molding temperature of 200° C. to obtain a content of 0.1% by weight of acetylene black relative to the 1-butene monomer. or 2.0% by weight of a 1-butene monomer composition.

[0039]

[0040] Using the above-mentioned 1-butene monopolymer composition, using a single-layer mold combined extruder (manufactured by Ikeu Co., Ltd., Φ90mm single-screw extruder), at a molding tem...

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PUM

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Abstract

Provided is water piping equipment for which the crystal transition rate is fast, and quality control and stock control are easy, and furthermore there is little effect of chlorinated waterongenerationofbubbles, cracking, andpromotionofpeeling off of a surface layer resin. Water piping equipment (awater/hot water supply pipe, a pipe joint, a water storage tank, etc.) is obtained by using a 1-butene-based polymer composition containing 0.01 to 5.0 parts by weight of acetylene black per 100 parts by weight of a specific 1-butene homopolymer and/or 1-butene-based copolymer. The acetylene black preferably has a mean particle diameter of 20 to 50 nm, and preferably has a DBP oil absorption amount of 100 to 250 ml/100g.

Description

technical field [0001] The present invention relates to water piping equipment molded from a specific 1-butene homopolymer and / or 1-butene copolymer composition containing a specific amount of black pigment, for example, pipes and storage for water transportation Water container, increase the speed of the crystallization transition phenomenon unique to 1-butene homopolymer and / or 1-butene copolymer, which is more convenient for quality management and inventory management, and at the same time, realizes the uniform dispersion of pigments and the improvement of chlorine water resistance improve. Background technique [0002] The well-known poly-1-butene-based polymer is useful as a material for resin moldings for storing or transporting water and hot water because of its creep resistance and the like. [0003] However, 1-butene homopolymer or 1-butene copolymer forms a metastable type II crystal structure when it is cooled and molded into a molded product from a molten state....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/12C08L23/20
CPCC08L23/20E02D3/12E02D2250/003
Inventor 小宫干得居伸
Owner MITSUI CHEM INC
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