This disclosure is related to a class of metal-ion induced hydrophobic polymers and method of producing such class of compounds by a one-step solution immersion process. Specifically, a metal-ion Induced hydrophobic polymer or melamine sponge (MII-HMS) is disclosed. Such polymer or sponge is demonstrated to be highly hydrophobic and oleophilic and exhibits excellent oil absorption capabilities, being able to absorb a wide range of oils and organic solvents up to 71 to 157 times of its own weight.

The current disclosure provides reinforced aerogel compositions that are durable and easy to handle, have favorable performance in aqueous environments, have favorable insulation properties, and have favorable, reaction to fire, combustion and flame-resistance properties. Also provided are methods of preparing or manufacturing such reinforced aerogel compositions. In certain embodiments, the composition has a silica-based aerogel framework, reinforced with an open-cell macroporous framework, and includes one or more fire-class additives, where the silica-based aerogel framework comprises at least one hydrophobic-bound silicon and the composition or each of its components has desired properties.

Disclosed are a method for preparing a sound-absorbing member and a sound-absorbing member. The method for preparing a sound-absorbing member includes: providing non-foaming sound-absorbing material powder and a foaming material; uniformly mixing the non-foaming sound-absorbing material powder with the foaming material and adding an auxiliary to form a sound-absorbing mixture; and foaming the sound-absorbing mixture to form foam with cells, wherein the non-foaming sound-absorbing material powder adheres to a surface and the cells of the foam. The foamed sound-absorbing material powder and the foam constitute a sound-absorbing member.

Provided herein is a composite material that includes at least one thermoresponsive polymer and at least one organic foam material. Further provided herein is a method for producing the composite material and also to the use of the composite material for cooling and for regulating temperature.

A foamed skeleton reinforced composite, comprising a foamed skeleton and a matrix material. The foamed skeleton is selected from at least one of a metal foamed skeleton, an inorganic non-metal foamed skeleton, and an organic foamed skeleton. The matrix material is selected from a metal or a polymer.

Melamine Formaldehyde (MF) photonic cooling bulk is disclosed for covering outer surfaces of a building. The MF photonic cooling bulk comprises a mass of hydraulically pressed MF microparticles that has been thermally annealed to form a fire and corrosion-resistant, cross-linked photonic cooling bulk configured to reflect incident solar irradiation and radiate heat from the building to the outer space.

A resin composition is provided having a high permittivity and a low dissipation factor, and having excellent moisture absorption and heat resistance, a high glass transition temperature, a low coefficient of thermal expansion, and good coatability and appearance, and used for producing an insulation layer of a printed wiring board; and a prepreg, a resin sheet, a laminate, a metal foil-clad laminate, and a printed wiring board. The resin composition contains: (A) a cyanate ester compound, (B) a maleimide compound, and (C) a surface-coated titanium oxide, wherein a content of the cyanate ester compound (A) is 1 to 65 parts by mass, based on 100 parts by mass of a total resin solid content in the resin composition, and a content of the maleimide compound (B) is 15 to 85 parts by mass, based on 100 parts by mass of a total resin solid content in the resin composition.

The present invention generally relates to a process for reducing formaldehyde content from cationic melamine-formaldehyde resin solution. Said process comprises the steps consisting of charging a starting solution to an ultrafiltration membrane system, separating said starting solution into a concentrate solution which mainly comprises cationic melamine-formaldehyde resin of high molecular weight, formaldehyde and water, and a permeate solution which mainly comprises cationic melamine-formaldehyde resin molecules of low molecular weight, formaldehyde, acid compounds and water and treating the permeate solution to reduce the free formaldehyde content of the permeate.

A method for cleaning medical equipment by scrubbing the equipment with an open-cell melamine-formaldehyde foam comprising an antibacterial active composition, and wherein the open-cell melamine-formaldehyde foam is prepared from a melamine-formaldehyde precondensate, wherein the molar ratio melamine to formaldehyde of the melamine-formaldehyde precondensate is smaller than 0.5.

The present invention provides a process for producing a melamine resin foam comprising heating and foaming an aqueous mixture M using microwave radiation, said mixture M comprising melamine resin foam particles, at least one melamine-formaldehyde precondensate, at least one curative, at least one surfactant and at least one blowing agent as well as a process for recycling melamine resin foam scrap.