| PolyMirae Company has developed two new PP resins that aim to address the increasing demands of customers in high transparency and high flow applications.
PolyMirae - a joint venture between LyondellBasell and Daelim – said its Clyrell RC5003 and Moplen RP5007 have the potential to replace traditional polymers.
It added that thanks to its high transparency the grades have the potential to replace polycarbonates, polyester (PET) and styrene-acrylonitrile, in applications such as appliances and housewares.
PolyMirae said its polypropylene copolymer Clyrell RC5003 has high gloss, transparency and fluidity and offers a good balance of rigidity and impact strength.
These are characteristics required by applications such as housewares, food and display containers, toys and appliances. And it is compliant with US FDA Food Contact requirements.
PolyMirae technology manager, G Y Ha, said: “The resin offers potential cycle time improvements of up to 10% and haze value reductions from 12% to 6%, compared to standard PP random copolymers clarified with traditional clarifying agents.”
Ha added: “Clyrell RC5003 enables easier handling and better processing as well as inter-material replacement of more expensive or higher density engineering polymers.”
PolyMirae said when processed using one-stage or two-stage injection stretch blow moulding (ISBM) techniques, the clarity and mechanical strength of applications produced using Clyrell RC5003 can be enhanced. This is compared with existing PP random copolymers.
The company added that the high fluidity and high gloss of Moplen RP5007 enable processing temperatures to be reduced by 10° to 20°C. Injection speeds can also be increased, and cooling time as well as cycle time significantly shortened compared to standard MFR C2 and C3 random copolymers.
PolyMirae said it has well-balanced high rigidity and superior impact properties and expected it to be used in thin-wall injection moulding (TWIM) applications such as food containers.
Ha added: “The end products display scratch resistance in the washing process and demonstrate almost no sink marks, which are the most frequent defect in moulding and warpage due to low residual stress.
“The resin meets FDA food contact reheating requirements including microwave oven reheating, and the containers are fully recyclable after use.”
Clyrell RC5003 and Moplen RC5007 are now commercially available in the Asia Pacific, Africa and Middle East regions. |
