POLYETHYLENE TEREPHTHALATE

High-viscosity polyethylene terephthalate CHIP

Vesthim Company Ltd suggests for supplying high-viscosity polyethylene terephthalate CHIP for manufacturing bottles for water, strongly sparkling drinks, different types of seed oil, packaging of food products.

Polyethylene terephthalate or PET is a linear thermoplastic polyester. It is produced of ethylene glycol with terephthalic acid or its dimethyl ether. PET has a various commercial use due to its wide range of properties.

 PET characteristics

 PET is a white, odorless solid. It has high chemical stability to such materials, as: gasoline, oils, fats, alcohols, ether, diluted acids and alkalis. Polyethylene terephthalate is insoluble in many organic solvents and in water. It’s soluble only at 40-150°C in phenols and their alkyl and chlorine-substituted, aniline benzyl alcohol, chloroform, pyridine, etc. It is nonstable to ketones, strong acids and alkalis. It has enhanced resistance to water vapor. It is a high strength, thermoplastic (in heated and cold condition), tough and lightweight material. This plastic is not toxic. PET products retain their properties at low temperatures up to – 40°C and at high temperatures up to +70°C.

 PET application

 One of applications is manufacturing PET bottles for beverages and food products, as far as PET has remarkable barrier properties and ability to control its crystallinity. Preforms for PET bottles are produced by injection molding.

 Technical specification

 Product name: High-viscosity polyethylene terephthalate CHIP 

 

 

Indices

 

 

UOM

 

Specification

 

 

Value

 

Lower

 

Upper

Appearance

-

White chips without foreign inclusions

White chips without foreign inclusions

Intrinsic viscosity

dl/g

0,78

0,82

0,80

Mass of 100 chips

g

-

2,0

1,6

Melting point

°C

243

249

245

Color:  Index L

-

82

-

84

Color:  Index B

-

-

1

-5

Mass fraction of acetaldehyde

ppm

-

1,0

0,4

Carboxy group content

m_/kg

-

40

21

Mass fraction of moisture

%

-

0,3

0,1

Mass fraction of dust

%

-

0,01

0,00

 

Hygienic rating

Smell of aqueous extract

Grade

max 1

<1

Flavor of aqueous extract

-

not allowed

n/a

Change in color and clarity of aqueous extract

-

not allowed

colorless transparent solution

 

Package: big bags 1050 kg.

Country of origin: Russian Federation.

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