Takemoto/Teknor Apex develop masterbatches for PLA biopolymers

A new series of masterbatches for polylactic acid (PLA) bioplastic increases the heat distortion temperature (HDT) and impact strength of the resin and reduces its cooling time in injection moulding, making possible semi-durable and durable applications which until now have been closed to standard PLA, according toTeknor Apex.

Terraloy 90017A and 90017B masterbatches are based on, and are for use with, Ingeo High Performance (HP) resin. NatureWorks has developed Ingeo HP resin to provide a higher HDT and greater impact strength than standard PLA, when used with a nucleating agent such as LAK-301 from Japanese firm Takemoto Oil & Fat. While the nucleating agent can play a critical role in reducing cooling time by promoting the crystallization of PLA, it is difficult to disperse properly in the HP polymer. Combining the nucleating agent with other ingredients, Teknor Apex says it not only improves dispersion but enhances the overall property profile of the resin, while shortening cooling time from nearly 300 seconds to less than 40.

Teknor Apex has entered into a strategic alliance with Takemoto Oil & Fat in developing the new masterbatches and will showcase it at NPE2015.

“While PLA has typically been used in single-service food service products, Terraloy 90017A and 90017B masterbatches open the way for Ingeo HP PLA polymers to be used in semi-durable and durable markets due to improved heat resistance, impact properties, and cycle time,” said Edwin Tam, manager of new strategic initiatives.

Takemoto Oil & Fat offers chemicals for plastics including release agents, adhesive binders (primary coating), hydrophilic agent and flame retardants.

Biopolymer maker NatureWorks is jointly owned by Thailand’s largest chemical producer, PTT Global Chemical, and Cargill, which provides food, agriculture, financial and industrial products and services to the world.


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