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PMP

Polymethylpentene

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Overview

Applications

Comparison

Chemical formula

Specific gravity

0.83

Thermal properties

N/A

Tg(℃)

220~

Tm(℃)

Characteristics

Transparency

Low surface tension(water)

Low dielectric loss

Steam resistance

Chemical resistance

Paintability

Flammable

Commentary

Polyolefin obtained by polymerization of 4-methyl-1-pentene. It has many unique properties due to its bulky side chain structure.

Key points

Among polyolefins, it has excellent heat resistance and extremely low water absorption, so it can be steam sterilized.

Although it is crystalline, it has high transparency.

It has the lowest density (0.83g/cm3) among general resins and has excellent gas permeation.

Exhibits stain resistance (low surface tension) and excellent chemical resistance. Therefore, it is not suitable for gluing or painting.

Excellent electrical insulation and has a dielectric constant comparable to that of fluororesin.

使われ方

Hollow fiber (artificial lung application, etc.)

Reason for adoption

Excellent gas permeability, stain resistance (low surface tension), chemical resistance

Source　Mitsui Chemicals

Release film

Reason for adoption

Heat resistance to curing temperature and easy peeling (low surface tension) after curing

Source　Mitsui Chemicals

Animal cages, scientific laboratory equipment, etc.

Reason for adoption

Visibility inside (transparency), stain resistance (low surface tension), excellent heat resistance, steam sterilizable (steam resistance)

Source　Mitsui Chemicals

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