The present invention relates to coated polymer particles comprising a water-swellable polymer core and an essentially continuous coating encapsulating the core. The coating comprises an oxide, hydroxide or oxide hydrate of silicon, aluminum, zirconium, tin or titanium. The polymer particles do not show instantaneous swelling, when contacted with water or a water-containing liquid, but show delayed water absorption after an appropriate period of time. The coated polymer particles may be used in oil fields, in mining, for construction chemical compositions or as carrier for active substances. The coated polymer particles are prepared by a suspension coating process or a fluidized bed coating process.

A preparation method of a polyacrylonitrile-based three-dimensional macroporous carbon monolith. The process route of the method includes the following steps: completely dissolving polyacrylonitrile in an organic solvent, then carrying out drying, cutting, hot-pressing and punching to obtain a foam precursor, next, preparing a polyacrylonitrile foam with a controllable pore structure by a supercritical carbon dioxide batch foaming method, and finally carrying out pre-oxidation and carbonization treatment to obtain the polyacrylonitrile-based three-dimensional macroporous carbon monolith. The preparation method of the polyacrylonitrile-based three-dimensional macroporous carbon monolith of the present invention is simple, easy to control, environmentally friendly and low in cost, thus, the present invention is conducive to large-scale production of the carbon monolith. The prepared polyacrylonitrile-based three-dimensional macroporous carbon monolith has the characteristics of uniform and controllable pore structure and good conductivity, and has a broad application prospect. The method has simple steps, convenient operation and high practicability.

A preparation method of a polyacrylonitrile-based three-dimensional macroporous carbon monolith. The process route of the method includes the following steps: completely dissolving polyacrylonitrile in an organic solvent, then carrying out drying, cutting, hot-pressing and punching to obtain a foam precursor, next, preparing a polyacrylonitrile foam with a controllable pore structure by a supercritical carbon dioxide batch foaming method, and finally carrying out pre-oxidation and carbonization treatment to obtain the polyacrylonitrile-based three-dimensional macroporous carbon monolith. The preparation method of the polyacrylonitrile-based three-dimensional macroporous carbon monolith of the present invention is simple, easy to control, environmentally friendly and low in cost, thus, the present invention is conducive to large-scale production of the carbon monolith. The prepared polyacrylonitrile-based three-dimensional macroporous carbon monolith has the characteristics of uniform and controllable pore structure and good conductivity, and has a broad application prospect. The method has simple steps, convenient operation and high practicability.

A manufacturing method for manufacturing a recorded product having a three-dimensional image, the manufacturing method including applying a foaming promotion liquid to a recording medium having a base material and a foaming layer provided on the base material and containing a foaming particle having a shell layer including polyacrylonitrile copolymer, and heating the recording medium to which the foaming promotion liquid is applied. The foaming promotion liquid includes a good solvent for the polyacrylonitrile copolymer and a poor solvent for the polyacrylonitrile copolymer.

The present invention provides a white pigment comprising a ZIF-based (zeolitic imidazolate framework) powder having a structure in which zinc (Zn) and an imidazole-based organic substance are bonded, a polymer resin film comprising the white pigment and a method for changing a color of a medium using the white pigment.

Provided are a carboxylic acid-modified nitrile-based copolymer latex composition, a preparation method thereof, a latex composition for dip-molding including the same, and an article molded by the same, the carboxylic acid-modified nitrile-based copolymer latex composition including: a carboxylic acid-modified nitrile-based copolymer, wherein the carboxylic acid-modified nitrile-based copolymer includes a 2-hydroxyethyl methacrylate monomer-derived repeating unit in an amount of more than 0.1 wt % to less than 12 wt %, and a coagulum in the carboxylic acid-modified nitrile-based copolymer latex composition has an amount of less than 1 wt %.

The invention relates to a thermoplastic formulation having a thermoplastic matrix and 1-40 percent by weight of a high molecular weight acrylic processing aid, with a weight average molecular weight of greater than 100,000 g/mol. The formulation has a high melt strength, yet is processable under typical melt processing conditions. The formulation is useful for melt-processed products, including extruded products such as extruded sheet, foam, co-extruded profiles, blown films, and other objects typically formed by a heat processing operation.

The present invention aims to provide a masterbatch for foam molding which can be suitably used in molding involving high shear force or molding requiring low molding temperature and which can provide a foam molded article having a high expansion ratio and good appearance quality. The present invention also aims to provide a foam molded article formed from the masterbatch for foam molding. Provided is a masterbatch for foam molding, containing: a base resin; and a thermally expandable microcapsule, the masterbatch having a true specific gravity of 0.80 g/cm.sup.3 or more and a Mooney viscosity ML 1+4 (100 C.) of 20 to 90, the base resin containing an EPDM resin, the masterbatch containing the thermally expandable microcapsule in an amount of 40 to 300 parts by weight relative to 100 parts by weight of the base resin.

The invention relates to the use of a fibre-reinforced composite (K) in a thermoforming process. Moreover, a process for thermoforming a fibre-reinforced composite (K) to a molded body (M) is disclosed, the process comprising at least the following steps: (i) Providing a fibre-reinforced composite (K) as described herein; (ii) Heating the fibre-reinforced composite (K) to a temperature (T3) at which the at least one substantially amorphous matrix polymer composition (B) is substantially softened; (iii) Thermoforming the fibre-reinforced composition (K) in a mold at a mold surface temperature (T4) in order to obtain a molded body (M); (iv) Releasing the molded body (M) from the mold; wherein the mold surface temperature (T4) is 50 C.

The disclosed latex system comprises a one-component, closed-cell, semi-foam, mastic sealant using gas-filled, flexible, organic microspheres to create a product that is elastic and compressible under pressure without protruding in an outward direction when compressed, thereby allowing the applied sealant to compress in an enclosed, maximum-filled channel unlike typical mastic sealants (while retaining the ability to rebound). This allows the sealant to function as a gasket, and, once fully cured, to have properties including vibration damping, insulating, and condensation resistance. The sealant can be formulated as an air barrier or a vapor barrier and at various degrees of moisture resistance. It may be applied by different packaging variations including aerosol can (bag in can or bag on valve), airless sprayer, cartridge tubes, foil tubes, squeeze tubes, and buckets to be applied using a brush, trowel, spatula, etc. The disclosed mastic sealant can also be formulated to be smoke-resistant and flame-resistant.