Lego, the Danish toy maker, says it will spend $150 million and hire more than 100 staffers to research, develop, and introduce “sustainable raw materials” to replace the petrochemical-based polymers it uses to produce its famous building-block toys. The company aims to make the switch by 2030.

The firm says it currently manufactures its toys from a wide range of materials, but industry sources say the key raw material for its blocks is acrylonitrile-butadiene-styrene (ABS), a copolymer of styrene and acrylonitrile synthesized in the presence of polybutadiene rubber.

Lego’s desire to change plastics stems from its environmental goals. “Finding alternatives to the materials used to make these bricks would significantly reduce the Lego Group’s impact on the planet,” says Lego owner Kjeld Kirk Kristiansen. The firm also plans to make its packaging from sustainable raw materials.

In 2014, the company used 77,000 metric tons of raw materials to create more than 60 billion Lego pieces. Styrolution, a styrenic polymers maker that counts Lego as one of its important ABS customers, declined to comment on Lego’s plans.

Lego wouldn’t say whether it seeks a biobased version of ABS or whether it plans to switch to a new polymer altogether. The company tells C&EN that it “is looking at all options.” Selection will be based on material source, chemical composition, how the material can be managed at the end of its life, and its societal impact, Lego says.

The project will be challenging. In a 2012 briefing, Styrolution told C&EN that the building-block raw material has to be made to an exact specification so that the blocks lock together and then come apart with just the right amount of force. “It is not your run-of-the-mill ABS,” a company executive said.

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