Bio Poly(tetramethylene ether)glycolBioPTMG

Mitsubishi Chemical Corporation

Mitsubishi Chemical Corporation has developed BioPTMG, an environmentally friendly polyol that is manufactured from bio feedstocks.
BioPTMG has the same performance as petroleum-derived PTMG as a raw material for polyurethane resins and polyester resins, and has excellent impact resilience, wear resistance, hydrolysis resistance, flexibility at low temperatures, etc.
Taking advantage of its characteristics, it can be used in a wide range of fields from interior and fashion to industrial materials.
In case you are interested in our BioPTMG we are ready to send you samples for your own evaluation.

Grades：
BioPTMG650、BioPTMG1000、BioPTMG2000、BioPTMG3000
CAS　No.：
25190-06-1
Japan, Chemical Substances Control Law：
(7)-129
Japan, Poisonous and Deleterious Substances Control Law：
Not applicable.
Japan, Fire Services Law：
Hazardous Material Class 4 Petroleums No.4 Hazardous Rank III（BioPTMG650）
Combustible Materials, Flammable Solids（BioPTMG1000, 2000, 3000）

Characteristics
Applications
Storage and Handling
Lineup / Specifications
Documents

Inquiries

Characteristics

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Grade	BioPTMG650	BioPTMG1000	BioPTMG2000	BioPTMG3000
Appearance	Colorless transparent liquid ～ Solid white wax Colorless transparent liquid when melted	Solid white wax Colorless transparent liquid when melted	Solid white wax Colorless transparent liquid when melted	Solid white wax Colorless transparent liquid when melted
Odor	Odorless	Odorless	Odorless	Odorless
Avg. Molecular Wt.	650	1000	2000	2900
Freezing point^*(℃)	11	17	20	21
Flash point（℃)	237	247	240	246
Specific gravity(40/4℃)	0.982	0.979	0.976	0.974
Viscosity (mPa･s)	160(40℃)	320(40℃)	1400(40℃)	3450(40℃)
Specific heat(kJ/kg･K)	―	2.0(40℃)	2.0(40℃)	―

＊：Measured value in conference with JIS K0065.3(visual)

Applications

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BioPTMG shows the following outstanding characteristics as a soft segment of polyurethane and polyester resins. The resins obtained are used over a broad range of applications, from common consumer goods such as garments, to the industrial materials such as machine parts.
Applications are expected to continue to grow.

Impact resilience
Hydrolysis resistances
Low temperature flexibility
Wear resistance
Tear resistance
Fungus resistance

Main Applications

Polyurethane Application

Polyurethane elastomers
Thermoset elastomers (TSU)
Thermoplastic elastomers (TPU)
Paints and coatings
Polyurethane elastic fibers (Spandex)
Adhesives and sealants
Artificial suede and synthetic leather

Storage and Handling

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BioPTMG is hygroscopic and will degrade if exposed to oxygen or air, so it should be well-sealed with dry nitrogen.
BioPTMG is a white, waxy sold at room temperature, but will become a clear, colorless liquid upon heating. If it has solidified in the drum, it can be melted by holding the drum at about 70℃ for 24 hours. Avoid localized heating however. For storage in the liquid state, it is recommended to maintain temperature at less than 50℃.
BioPTMG650 is classified under the Japanese Fire Services Act as hazardous materials, Class 4, Petroleums No.4, Hazardous Rank III. Volatility is low, and it is unlikely to catch fire at room temperature. But if it is burning, extinguish the fire with dry chemical, alcohol-resistant foam, or large quantities of water. Although BioPTMG has relatively low toxicity and is relatively safe, use standard protective equipment such as goggles and gloves when handling it.

Lineup / Specifications

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Product Specifications
	Molecular Weight	Hydroxyl value mgKOH/g	Acid number mgKOH/g	Moisture％	Volatiles％	Hue （Hazen）
BioPTMG650	650±50	160～187	<0.05	<0.03	<0.1	<50
BioPTMG1000	1000±50	107～118	<0.05	<0.03	<0.1	<50
BioPTMG2000	2000±100	53～59	<0.05	<0.03	<0.1	<50
BioPTMG3000	3000±200	35～40	<0.05	<0.03	<0.1	<50