12 Sep 2023 --- Solvay, a global supplier of specialty materials, has partnered with Hegen to create the “first” baby bottle made from recycled content. Solvay’s Duradex material is made from polyphenyl sulfone (PPSU) and is used to manufacture a Press-to-Close, Twist-to-Open (PCTO) baby feeding bottle. The non-fossil feedstock content of the PPSU grade is third-party mass balance (MB) certified under the International Sustainability & Carbon Certification PLUS MB accounting regime.