The invention provides a composition that can provide a film exhibiting excellent adhesion to a substrate and having excellent non-stickiness. The composition contains a fluororesin, a heat-resistant resin, water, and a solvent having a boiling point of 205° C. or higher.

A preparation method of a fluoropolymer processing aid. The preparation method comprises the following steps: simultaneously adding ε-caprolactone and a fluoropolymer elastomer into a reactor, and heating to completely dissolve the fluoropolymer elastomer; and then cooling, adding polyol, mixing thoroughly, and adding an organotin catalyst to carry out a polymerization reaction; and after the reaction is finished, carrying out cooling, pulverizing or spray granulation so as to obtain the fluoropolymer processing aid. The processing aid prepared by using the method can reduce the extrusion pressure of a polymer during extrusion, improve the processing efficiency, improve the phenomena of melt rupture and “sharkskin” during polymer extrusion, and effectively enhance the surface quality of a product. Compared with the prior art, the processing aid of the invention has the characteristics of uniform dispersed particle size during polymer processing, no coking at a die head during long-time polymer extrusion processing, etc.

A preparation method of a fluoropolymer processing aid. The preparation method comprises the following steps: simultaneously adding ε-caprolactone and a fluoropolymer elastomer into a reactor, and heating to completely dissolve the fluoropolymer elastomer; and then cooling, adding polyol, mixing thoroughly, and adding an organotin catalyst to carry out a polymerization reaction; and after the reaction is finished, carrying out cooling, pulverizing or spray granulation so as to obtain the fluoropolymer processing aid. The processing aid prepared by using the method can reduce the extrusion pressure of a polymer during extrusion, improve the processing efficiency, improve the phenomena of melt rupture and “sharkskin” during polymer extrusion, and effectively enhance the surface quality of a product. Compared with the prior art, the processing aid of the invention has the characteristics of uniform dispersed particle size during polymer processing, no coking at a die head during long-time polymer extrusion processing, etc.

The present invention includes a method for producing a filler-resin composite including (a) preparing a filler assembly in which a plurality of fillers are assembled, (b) impregnating at least one end in the thickness direction of the filler assembly with a first polymer soluble in liquid to produce a first polymer layer, (c) impregnating a portion of the filler assembly other than the one end in the thickness direction with a second polymer insoluble to the liquid to produce a second polymer layer, and (d) dissolving the first polymer layer impregnated at at least an end in the thickness direction of the filler assembly in the liquid to remove the first polymer layer.

The present invention includes a method for producing a filler-resin composite including (a) preparing a filler assembly in which a plurality of fillers are assembled, (b) impregnating at least one end in the thickness direction of the filler assembly with a first polymer soluble in liquid to produce a first polymer layer, (c) impregnating a portion of the filler assembly other than the one end in the thickness direction with a second polymer insoluble to the liquid to produce a second polymer layer, and (d) dissolving the first polymer layer impregnated at at least an end in the thickness direction of the filler assembly in the liquid to remove the first polymer layer.

The present invention includes a method for producing a filler-resin composite including (a) preparing a filler assembly in which a plurality of fillers are assembled, (b) impregnating at least one end in the thickness direction of the filler assembly with a first polymer soluble in liquid to produce a first polymer layer, (c) impregnating a portion of the filler assembly other than the one end in the thickness direction with a second polymer insoluble to the liquid to produce a second polymer layer, and (d) dissolving the first polymer layer impregnated at at least an end in the thickness direction of the filler assembly in the liquid to remove the first polymer layer.

The instant disclosure relates to a fluorine-containing ethylene-vinyl alcohol copolymer (EVOH) resin composition as well as mixture and blend thereof. The fluorine-containing EVOH resin composition comprises EVOH and fluorine-containing particles, wherein the fluorine-containing EVOH resin composition has a total fluoride ion content ranging from 45 to 41000 ppm. The invention can reduce the adhesion of EVOH to the inside of the extruder, and effectively reduce the appearance of gel or gelled substance in subsequent finished products.

A fluorinated polymer suitable for deposition is provided. A film containing such a fluorinated polymer as a material is provided. A method for producing a film, by which such a film can readily be produced, is provided. Further, an organic photoelectronic element having such a film in its structure is provided.

A fluorinated polymer which satisfies the following requirements (1) to (3): (1) the melting point is 200° C. or higher, (2) the thermogravimetric loss rate when the temperature is increased at a temperature-increasing rate of 2° C./min under a pressure of 1×10.sup.−3 Pa, substantially reaches 100% at 400° C. or lower, (3) when the temperature is increased at a temperature-increasing rate of 2° C./min under a pressure of 1×10.sup.−3 Pa, the temperature width from a temperature at which the thermogravimetric loss rate is 10% to a temperature at which it is 90%, is within 100° C.

The invention is an improved biocompatible surface for a variety of medical purposes. The biocompatible surface employs a unique tight microstructure that demonstrates enhanced cellular response in the body, particularly when placed in contact with blood. As a blood contact surface, the present invention can be beneficially employed in a wide variety of implantable devices and in many other devices and equipment that come in contact with blood.

The invention is an improved biocompatible surface for a variety of medical purposes. The biocompatible surface employs a unique tight microstructure that demonstrates enhanced cellular response in the body, particularly when placed in contact with blood. As a blood contact surface, the present invention can be beneficially employed in a wide variety of implantable devices and in many other devices and equipment that come in contact with blood.