PETG

Polyethylene Terephtalate - Glycol-modified

Polyethylene Terephtalate Glycol-modified (PETG) is a high-impact polymer which provides remarkable clarity and light transmission with high gloss in addition to impact resistance at low temperatures. PETG is used in a variety of packaging, industrial and medical applications.

Chemistry 

The term co-polyester is applied to PETG frequently. The term defines thermoplastic saturated polyester whose synthesis uses more than one glycol and / or more than  one di-basic acid.

PETG refers to Copolyester based on terephtalic acid and ethylene glycol that are copolymerized or modified with up to 50% mol. of another glycol (the "G" in PetG). The most common second diol is CHDM and the PETG name is applied to the Co-polyester with enough CHDM content to slow crystallization rates so that the Co-Polyester remain amorphous under processing conditions. The lower limit is aprox. in the 20% mol.  range of CHDM (around 2-5 % mol.) in PET lead to crystallization rate modifications that are tuned for controlling crystallization in the stretch blow moulding process for bottles and other containers. Therefore, when CHDM is contained in the compositional range of 20-50% mol. are typically amorphous, and no crystallization peaks are observed in DSC curves.

The main Co-polyesters are PCTA, PCTG and PetG copolyester. Unlike PCTA, which is acid-modified, PETG can be made either by combining CHDM with TPA and Ethylene Glycol or Neopentyl Glycol (NPG) resulting in a glycol-modified polyester.

Short selection of our Grades;

 PETG

• Diolen PETG03 Injection Molding grade, IV: 0.72

• Diolen PETG04 Film & Sheet Grade, IV: 0.80

• Diolen PETG04 Heavy Gauge Sheet Grade IV: 0.8

• Diolen PETG05 Extrusion Grade IV: 0.8

• Diolen PETG08 Heat Shrink Grade IV: 0.8

• Diolen PETG09 Extrusion Blow moulding Grade IV: 0.84

PCT

• • Diolen PCT02 Reinforced, Injection moulding Grade

  • Diolen PCT04 High Heat resistance & Mechanical prop.

  • Diolen PCT06 Nucleated, Injection moulding Grade

  • Diolen PCT09 General Purpose Grade

PCTA

• • Diolen PCTA03 Injection moulding Grade IV: 0.66

  • Diolen PCTA06 Dental Grade CHDM 55%

  • Diolen PCTA07 Injection blow moulding Grade IV: 0.78

  • Diolen PCTA09 Injection moulding Grade 37% IPA

PCTG

• Diolen PCTG04 Injection moulding Grade

• Diolen PCTG05 Injection moulding, High impact Grade 

• Diolen PCTG07 Branched Extrusion Grade

• Diolen PCTG10 3D printing Grade