The invention provides methods for making porous devices from substantially monodisperse populations of substantially spherical particles of polyarylketone polymers or of thio-analogues of such polymers, of selected sizes. The porous devices allow greater control of porosity than previously available porous devices. In some embodiments, the porous devices are frits, filters, membranes or monoliths.

The invention provides methods for making porous devices from substantially monodisperse populations of substantially spherical particles of polyarylketone polymers or of thio-analogues of such polymers, of selected sizes. The porous devices allow greater control of porosity than previously available porous devices. In some embodiments, the porous devices are frits, filters, membranes or monoliths.

The invention provides methods for making substantially monodisperse populations of substantially spherical particles of polyarylketone polymers or of thio-analogues of such polymers, of selected sizes. Populations of such particles can be used, for example, to form porous devices with greater control of porosity than previously available. In some embodiments, the porous devices are frits, filters, membranes or monoliths.

The invention provides methods for making substantially monodisperse populations of substantially spherical particles of polyarylketone polymers or of thio-analogues of such polymers, of selected sizes. Populations of such particles can be used, for example, to form porous devices with greater control of porosity than previously available. In some embodiments, the porous devices are frits, filters, membranes or monoliths.

A manufacturing method for porous resin microparticles comprising steps of: heating a polyester thermoplastic resin having biodegradability to a temperature of 80° C. or higher and 200° C. or lower in a glycol ether solvent to obtain a solution, and cooling the solution to precipitate the polyester thermoplastic resin as porous resin microparticles.

A manufacturing method for porous resin microparticles comprising steps of: heating a polyester thermoplastic resin having biodegradability to a temperature of 80° C. or higher and 200° C. or lower in a glycol ether solvent to obtain a solution, and cooling the solution to precipitate the polyester thermoplastic resin as porous resin microparticles.

Disclosed herein compositions of polysaccharides chemically cross-linked by aromatic dialdehydes. The compositions may be in form of polymeric sheets for a variety of applications. Disclosed also nano-sized particles comprising the polysaccharide chemically cross-linked by aromatic dialdehydes. The nano-sized particles may further comprise lipids and surfactants. Intranasal delivery of the nano-sized particles enables delivery of biologically active agents into the brain. Topical and transdermal delivery of the nano-sized particles enables delivery of biologically active agents for treatment of systemic or dermatological disorders. Methods of manufacturing and uses of the compositions are also disclosed.

Disclosed herein compositions of polysaccharides chemically cross-linked by aromatic dialdehydes. The compositions may be in form of polymeric sheets for a variety of applications. Disclosed also nano-sized particles comprising the polysaccharide chemically cross-linked by aromatic dialdehydes. The nano-sized particles may further comprise lipids and surfactants. Intranasal delivery of the nano-sized particles enables delivery of biologically active agents into the brain. Topical and transdermal delivery of the nano-sized particles enables delivery of biologically active agents for treatment of systemic or dermatological disorders. Methods of manufacturing and uses of the compositions are also disclosed.

The present invention relates to a method of manufacturing an ionomer resin, comprising the steps of: (i) adding a poor solvent to a crude ionomer resin solution comprising a (meth)acrylic acid unit (A), a neutralized (meth)acrylic acid unit (B) and an ethylene unit (C) to allow a granular resin with a peak top particle size of from 50 to 700 μm to be precipitated; and (ii) washing the precipitated granular resin with a washing solution; wherein the total amount of the unit (A) and the unit (B) is from 6 to 10 mol % based on the entire monomeric units constituting the crude ionomer resin.

The present invention relates to a method of manufacturing an ionomer resin, comprising the steps of: (i) adding a poor solvent to a crude ionomer resin solution comprising a (meth)acrylic acid unit (A), a neutralized (meth)acrylic acid unit (B) and an ethylene unit (C) to allow a granular resin with a peak top particle size of from 50 to 700 μm to be precipitated; and (ii) washing the precipitated granular resin with a washing solution; wherein the total amount of the unit (A) and the unit (B) is from 6 to 10 mol % based on the entire monomeric units constituting the crude ionomer resin.