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Study: Chemical and biological recycling methods generate most patents
Source:Adsale Plastics Network    Editor:JK    Date:06.Jan.2022

From a global perspective, Europe and the U.S. are leading innovation in plastic recycling and alternative plastics technologies, stated a new study titled "Patents for tomorrow's plastics: Global innovation trends in recycling, circular design and alternative sources" published by the European Patent Office (EPO).

 

The study presents a comprehensive analysis of the innovation trends for the period 2010 to 2019 that are driving the transition to a circular economy for plastics. Europe and the U.S. each accounted for 30% of patenting activity worldwide in these sectors between 2010 and 2019, or 60% combined.

 

Within Europe, Germany posted the highest share of patent activity in both plastic recycling and bioplastic technologies (8% of global total), while France, the UK, Italy, the Netherlands and Belgium stand out for their higher specialization in these fields.


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The report looks at the number of international patent families (IPFs), each of which represents an invention for which patent applications have been filed at two or more patent offices worldwide (so-called high-value inventions).

 

It aims to provide a guide for business leaders and policymakers to direct resources towards promising technologies, to assess their comparative advantage at different stages of the value chain, and to highlight innovative companies and institutions that could contribute to long-term sustainable growth.

 

The study highlights that of all recycling technologies, the fields of chemical and biological recycling methods generated the highest level of patenting activity in the period under review. These methods accounted for 9000 IPFs in 2010-19, double the number filed for mechanical recycling (4500 IPFs), which is currently the most commonly used solution to transform plastic waste into new products.

 

While the patenting of standard chemical methods reached a peak in 2014, emerging technologies such as biological methods using living organisms (1500 IPFs) or plastic-to-monomer recycling (2300 IPFs) now offer new possibilities to degrade polymers and produce virgin-like plastics.

 

Untapped potential to commercialize European university research

 

The report also finds that in the chemical and biological recycling fields, fundamental research plays a much more significant role than in other plastic recycling technologies, with nearly 20% of inventions originating from universities and public research organizations.


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In terms of geographic location of these universities and public research organizations, Europe and the U.S. have a clear lead, each with 29% of those IPFs stemming from research institutions. The report shows that Europe is the only major innovation hub to contribute a larger share of the chemical and biological recycling inventions from fundamental "upstream" research (29%) than overall in the field (26%).

 

By contrast, the U.S. and Japan's contributions to upstream IPFs (29% and 11%) are lower than their respective shares in all IPFs (36% and 17%). Meanwhile, U.S. start-ups and scale-ups generated four times as many IPFs in chemical and biological recycling as their European counterparts (338 v. 84). This suggests that Europe, despite being particularly active in fundamental research, is not exploiting its full potential when it comes to transferring these technologies to industry.

 

Healthcare and cosmetics & detergent industries lead in bioplastic innovation

 

In the area of bioplastic inventions, the study finds that the healthcare sector has by far the most patenting activity in total (more than 19 000 IPFs in 2010-19), despite accounting for less than 3% of the total demand for plastics in Europe.


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However, the cosmetics and detergents sector has the largest share of its patenting activity in bioplastics, with the ratio of bioplastics IPFs to conventional plastics IPFs being 1:3, compared to 1:5 in the healthcare sector. Packaging, electronics and textiles are also significant contributors to innovation in bioplastics.

 

Rapid rise in innovation in plastics which are easier to recycle

 

Looking ahead, the study highlights significant potential in new plastic designs for easier recycling, an area of alternative plastics which has developed exponentially in recent years, with an average annual growth rate of 10% since 2010. These technologies have potential applications in aerospace, construction, transportation, wind turbines and microelectronics.


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The rapid growth of patenting in these fields is almost entirely driven by innovation in dynamic covalent bonding - an approach allowing for novel designs of durable plastic materials capable of self-repairing. While Japan has a strong lead in this field, most of the inventions coming from universities and public research organizations in this field originate from European and U.S. research institutions.

 

Read the full study here.

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