Patent Alert 2025-04

Phthalic acid diesters, commonly known as phthalates, are widely used as plasticizers in PVC.  These phthalates have been recently under scrutiny for the potential health risks associated with their use such as their interference with human (especially children) hormonal systems. In particular, bis(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), benzyl butyl phthalate (BBP) and diisobutyl phthalate (DIBP) are classified in REACH  as toxic substances for reproduction. 

This month’s selection highlights phthalate-free plasticizers starting with an example showing that replacing phthalate plasticizers might require a mixture of different plasticizers to meet the performance requirements dictated by the targeted application. 

1. Blood storage containers made of polyvinyl chloride and mixed plasticizers
2. Blends of dibenzoate plasticizers
3. Acetylated polyglycerine fatty acid ester and a pvc insulator plasticised therewith
4. Method for the preparation of 1,4-cyclohexane dicarboxylic acid dialkyl esters
5. Undercoating and articles of manufacture coated therewith
6. Vinyl chloride resin plasticizing agent, vinyl chloride resin composition, and molded article thereof
7. Plasticizer composition comprising cyclohexane 1,4-diester-based compound, and resin composition comprising same
8. Plasticizer for vinyl chloride resin containing non-phthalate ester and vinyl chloride resin composition containing such plasticizer