US 9,040,604 B2 · Multifunctional hyperbranched organic intercalating agent, method for its manufacture and its use

Abstract

A facile synthesis of amphiphilic hyperbranched polymers consisting of poly(amic acid) and polyimide was developed via “A2+B3” approach from difunctional anhydride and trifunctional hydrophilic poly(oxyalkylene)triamine. Various amphiphilic hyperbranched poly(amic acid)s (HBPAAs) with terminal amine functionalities and amic acid structures were prepared through ring-opening polyaddition at room temperature, followed by thermal imidization process for the formation of hyperbranched polyimides (HBPIs), accordingly. The resulting HBPIs were analyzed by GPC, indicating the molecule weights of 5000˜7000 g/mol with a distribution of polydispersity between 2.0 and 3.8. The amine titration for HBPIs indicated the peripheral total-amine contents to be 8.32˜18.32 mequiv/g dependent on compositions.

Claims9

Dependent claims

A method for manufacturing a multi-functional, hyperbranched organic intercalating agent comprising synthesizing hydropholic triamine with polyoxyalkylene segmented chains and difunctional di-anhydride to form an A2B3 structure of hyperbranched polymeric intercalating agent with poly(amic acid) and polyimide,

wherein the hydropholic triamine and the difunctional di-anhydride are synthesized at a temperature below room temperature;
a total concentration of the hydropholic triamine and the difunctional di-anhydride in a solvent during synthesis is from 0.05 M to 0.09 M;
before being synthesized with the bydropholic triamine, the difunctional di-anhydride is pretreated for lowering degree of hydrolysis and the pretreatment included thermal cylization or chemical imidization, and
after the hydropholic triamine and the difunctional di-anhydride forming the intercalating agent, the intercalating agent being ionized and forming micelles in an aqueous phase.

1 more element

A method for modifying a 2D layered material by using a multifunctional hyperbranched organic intercalating agent synthesized by reacting hydropholic triamine having polyoxyalkylene segmented chains with difunctional di-anhydride to form an A2B3 structure of hyperbranched polymeric intercalating agent with poly(amic acid) and polyimide, comprising

neutralizing the intercalating agent with an inorganic acid or inorganic base leading to ionization to form an ionized amphiphilic hyperbranched organic polymer;
allowing the ionized amphiphilic hyperbranched organic polymer to form micelles in an aqueous phase;
and
mixing the ionized amphiphilic hyperbranched organic polymer and an untreated 2D layered material for intercalation to obtain a modified 2D layered material.

1 more element

Dependencies are inferred from the claim text.

Multifunctional hyperbranched organic intercalating agent, method for its manufacture and its use

Life of this patent

Multifunctional hyperbranched organic intercalating agent, method for its manufacture and its use

Life of this patent

Abstract

Claims9