PET MODIFICATION 2021 - Graft Polymer
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PET MODIFICATION 2021
INTRODUCTION
The properties of PET can be modified and enhanced to such an amount that it can then be
used in durable products such as appliance housings, electronics, furniture, transportation,
and building and construction. Such PET resins have superior mechanical, thermal,
electrical, chemical, and environmental properties to conventional bottle-grade PET resins.
Unmodified, bottle-grade PET resin begins to soften and become rubbery at 80◦C. This
makes the direct use of unmodified PET in engineered applications not possible. For PET to
be used in durable products it must be made highly crystalline and needs to be reinforced
with glass fibers or mineral reinforcements.
Modified PET with high crystallinity and low melt viscosity means that they are ideally suited
for injection molding of complex parts that require high strength, good dimensional stability,
and insulation properties.
Modified PET resins with improved rheology and melt strength for applications such as
foaming, extrusion blow molding, or simply for upgrading low-intrinsic-viscosity materials,
can be produced through chain extension/branching reactions with di- or polyfunctional
reagents such as chain extenders.
But a variety of formulants can be added to PET resin to produce a formulated, engineering-
grade thermoplastic.
PET modification | 2021 2
GP PRODUCTS FOR PET MODIFICATION
Chain Extenders Impact Modifiers HFFR additive
Compatibilizers
GRAFTALEN™ EB 15050 GRAFTABOND™
CE EV-MMA/GMA 00150
(Granules)
GRAFTABOND™
GRAFTASYNT™ APP-
EV-NCO 00130 TEAB
GRAFTALEN™ 168 CE
(Powder) (Powder)
GRAFTABOND™
EV-UP /GMA 00150
GRAFTABOND™
EB-GMA 15020 CE GRAFTABOND™
(Granules) EB-GMA 00730 C
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IMPACT MODIFIERS & COMPATIBILIZERS FOR PET
GRAFTABOND EV-MMA/GMA 00150 - is a copolymer of ethylene, so it’s
compatible with polyethylene and with most other ethylene copolymers.
The vinyl acetate brings flexibility, softness and polarity to the material,
and glycidyl methacrylate adds reactive groups. It is designed for impact
modification, combatibilization for PET. Dosage 5 – 25%.
GRAFTABOND EV-NCO 00130 - is a copolymer of ethylene grafted
acrylate-isocyanate (NCO). It is designed for impact modification,
combatibilization for PET. Dosage 5 – 25%.
GRAFTABOND EV-UP/GMA 00150 - is a copolymer of ethylene grafted
with unsaturated polyester (UP) and GMA. The vinyl acetate brings
flexibility, softness and polarity to the material and glycidyl methacrylate
adds reactive groups. It is designed for impact modification,
combatibilization for PET. Dosage 5 – 25%.
GRAFTABOND EB-GMA 00730 C - is a copolymer of ethylene and butyl
acrylate, grafted with high amount of Glycidyl Methacrylate. It adds
flexibility and good low temperature behavior to the base material. Is a
great compatibilizer for polyolefin-polyester based compounds. Dosage
1 – 5% (in case of twin-screw extruder).
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Chain extender for polycondensation scrap PET, PBT, PC, PLA
Additives help revitalize recycled polycondensation polymer and increase its molecular weight to the same or
even higher molecular weight than virgin:
GRAFTALEN™ EB 15050 CE (Granules) GRAFTALEN™ 168 CE (Powder)
Dosage 0.3-0.5 % Dosage 0.05-0.3 %
r-PET + 0.1% r-PET + 0.3% r-PET + 0.5%
GRAFTALEN™ EB GRAFTALEN™ EB GRAFTALEN™ EB r-PET + 0.05% r-PET + 0.15% r-PET + 0.25%
15050 CE 15050 CE 15050 CE GRAFTALEN™ 168 CE GRAFTALEN™ 168 CE GRAFTALEN™ 168 CE
Recycling Presentation 5
2021
CHAIN EXTENDER FOR POLYESTERS AND POLYESTER BASED COMPOUNDS
GRAFTABOND™ EB-GMA 15020 CE (Granules)
It adds flexibility and good low temperature behavior to
the base material. The high grafting degree adds
additional functionality as a chain extender for polyesters
and polyester based compounds.
Dosage 1-5 %
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GRAFTASYNT APP*-TEAB INTUMESCENT FLAME RETARDANT
Performance flame-retardant powder additive, is a highly engineered COST-EFFECTIVE
boron mix & modified APP.
Designed to reduce flame propagation in plastics (PP, PE) and
coating.
APP* – modified Amino Polyphosphate
TEAB – Triethanolamine borat (Boratrane)
• Achieve V-0 rating at low loading levels from 25%
• Dosage from 25% (Depends on the compound type
and filler content)
HFFR Presentation | 2021 7
WHAT MAKES GP UNIQUE
Use proprietary co-agents and redox initiating system for
grafting
Use of Nitroxide Mediated Polymerization for controlled
grafting reactions
Co-continuous nano-morphology approach for creation
polymeric alloys
Interpenetrating Polymer Networks (IPN)
Thermo-Reversible Crosslinking polymers and Vitrimers
Smart Polymers
Self-Healing polymers
In-house synthesis of unique “nitroxide stable radicals” (TEMPO)
for high-tech composite materials – proprietary process
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BUSINESS MODEL: INNOVATIONS
GRAFT / BLOCK POLYMERS INNOVATIVE TECHNOLOGIES
• Flow induced crystallization
• Solid Phase Grafting
POLYMERIC NANO ALLOYS
• Solution Grafting
• Fillers Treatments
CROSSLINKING • Powders Hybridization
• Hot ozonolysis/plasma modification
• Nitroxide Mediated Polymerization
POROUS • Micro/Nano Porous polymer carries
To support its unique modification technologies, GP
SYNTHESIS has built the R&D center including Laboratory and
Synthesis facilities
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Contact information
Anjeza Kuhar | Sales Manager Ekaterina Kulevskaia | Sales Manager
English / Italian / Albanian English / Russian / Slovenian
Phone: +386 40 380 668 Phone: :+386 31 399 366
anjeza.kuhar(at)graftpolymer.com ekaterina(at)graftpolymer.com
Pavel Kobzev | English / Hebrew
Business Development & Sales Director www.graftpolymer.com
Phone: +386 40 867 937
Pavel(at)graftpolymer.com Info(at)graftpolymer.com
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