Patents on Additive Compositions

On Demand Hydrolysis Accelerator for Condensation Polymers

Patent profile:

The invention relates to an additive composition comprising at least one hydroxycarboxylic acid salt and at least one organic phosphorus compound, said composition being capable of accelerating the hydrolytic decomposition of a thermoplastic condensation polymer. The invention additionally relates to a condensation polymer composition, a method for accelerated hydrolytic decomposition and mouldings.

Benefits for potential applications:

  • Dual-function behavior: stabilizes during melt processing (aprotic, low moisture), accelerates hydrolytic decomposition post-use (protic, e.g., water or humidity exposure).
  • Tunable end-of-life: adjust hydroxycarboxylic ester salt-to-phosphorus ratio to set decomposition rate without compromising processing.
  • Faster composting/biodegradation of biopolyesters (e.g., PLA, PBS, PBA); supports circular packaging, agricultural films, and hygiene products.
  • Cost-effective, scalable additives; compatible with standard extrusion and masterbatch routes.

Addivite composition and use therof, condensation polymer composition, modling compound and molding compounds produced therefrom, and molded parts and use thereof

Patent profile:

The invention relates to an additive composition with inorganic sulfites, organic derivatives of sulfurous acid and/or thiosulfates, and organic phosphorus compounds, said composition being capable of accelerating the hydrolytic decomposition of a thermoplastic condensation polymer. The invention additionally relates to a condensation polymer composition, a process for accelerated hydrolytic decomposition and mouldings with an additive composition according to the invention.

Benefits for potential applications:

  • Dual-function behavior: stabilizes during melt processing (aprotic, low moisture), accelerates hydrolytic decomposition post-use (protic, e.g., water or humidity  exposure).
  • Tunable end-of-life: adjust sulfite-to-phosphorus ratio to set decomposition rate without compromising processing.
  • Faster composting/biodegradation of biopolyesters (e.g., PLA, PBS, PBA); supports circular packaging, agricultural films, and hygiene products.
  • Cost-effective, scalable additives; compatible with standard extrusion and masterbatch routes.