JP-2022532353-A5 -

Dates

Publication Date

20230518

Application Date

20200512

Description

Descriptions of elements in the figures should be understood to apply equally to corresponding elements in other figures unless otherwise indicated. While specific embodiments are illustrated and described herein, it will be understood by those skilled in the art that these specific embodiments can be replaced by various alternative and/or equivalent embodiments without departing the scope of this disclosure. This application is intended to encompass any adaptation or modification of any specific embodiment discussed herein. Therefore, this disclosure is intended to be limited only by the claims and their equivalents. The present invention encompasses the following embodiments. (1) A film comprising a polymer material and a plurality of particles dispersed therein, The polymer material comprises a plurality of elongated polymer elements oriented substantially along the same first direction and interconnecting the particles, The elongated end portion of at least one first elongated polymer element among the plurality of elongated polymer elements is fitted and bonded to the first particle among the plurality of particles along the entire length of the elongated end portion. The elongated middle portion of at least one second elongated polymer element among the plurality of elongated polymer elements is fitted and bonded to the second particle among the plurality of particles along the entire length of the elongated middle portion. The second elongated polymer element is a film in which the second elongated polymer element extends from both ends of the elongated middle portion in a direction away from the second particle. (2) The film according to item 1, wherein the particles among the plurality of particles are dispersed in the polymer material in a volume volume of more than 50 percent. (3) The film according to item 1 or 2, wherein the particles among the plurality of particles are hollow and have an average size of more than about 1 micron. (4) A film comprising a polymer material and a plurality of particles dispersed therein in a volume exceeding approximately 50 percent, The polymer material includes a plurality of elongated polymer elements that interconnect the particles, In some of the elongated polymer elements, each elongated polymer element includes a plurality of spaced elongated portions. Each of the plurality of spaced elongated portions fits and connects to one of the plurality of particles along the entire length of the elongated portion, The polymer element is a film that extends from both ends of the elongated portion in a direction away from the particles. (5) The film according to item 4, wherein the plurality of spaced elongated portions include at least three elongated portions. (6) The film according to item 4 or 5, wherein the ratio of the volume of the plurality of particles to the volume of the polymer material is at least 5. (7) A multilayer film comprising a porous intermediate layer disposed between and bonded to opposing non-porous first and second protective layers, wherein the porous intermediate layer is Multiple elongated polymer elements interconnecting multiple hollow particles, Multiple interconnected voids defined by the aforementioned multiple elongated polymer elements and hollow particles, A multilayer film comprising the above, wherein the real part of the dielectric constant of the film at a frequency of about 2.5 GHz is less than about 1.4. (8) The multilayer film according to item 7, wherein the ratio of the imaginary part of the dielectric constant of the film to the real part at a frequency of approximately 2.5 GHz is less than approximately 0.004. (9) The multilayer film according to item 7 or 8, wherein the particles among the plurality of particles are dispersed in the porous intermediate layer in a volume volume of more than 50 percent. (10) A multilayer film comprising an intermediate layer disposed between and bonded to opposing first and second protective layers, The intermediate layer includes a plurality of elongated polymer elements that interconnect a plurality of particles, A multilayer film in which, for at least one pair of first and second particles among the plurality of particles, and for each elongated polymer element in some of the plurality of elongated polymer elements, the first end of the element terminates with the first particle, and the second end on the opposite side of the element terminates with the second particle. (11) The multilayer film according to item 10, wherein the elongated polymer elements in some of the elongated polymer elements are substantially parallel to one another. (12) A multilayer film comprising an intermediate layer disposed between and bonded to opposing first and second layers, The aforementioned intermediate layer contains multiple hollow particles dispersed therein with a volume exceeding approximately 50 percent, The multilayer film has at least 15% elongation at the breaking point at a tensile load rate