An aqueous dispersion contains pigment colorant particles that are present in an amount of at least 5 weight % and up to and including 80 weight %; a dispersing polymer that is a hexyloxy benzoic acid polymer; and an aqueous medium. The weight ratio of the pigment colorant particles to the dispersing polymer is from 19:1 to and including 2:1. Such aqueous dispersions can be incorporated into aqueous inkjet ink compositions that can be used for forming opaque images such as white images using inkjet printing methods.

A method of inkjet printing includes ink jetting an aqueous inkjet ink composition to form a white printed image on a substrate. The aqueous inkjet ink composition comprises particles of titanium dioxide that are present in an amount of at least 4 to 15 weight % and the particles have a 95.sup.th percentile particle size of less than 200 nm and a 50.sup.th percentile particle size of less than 130 nm. The titanium dioxide particles are dispersed within the aqueous inkjet ink composition using a dispersing polymer that is a styrene-(meth)acrylic acid polymer, styrene-maleic anhydride polymer, or styrene-maleic acid polymer and the weight ratio of the titanium dioxide particles to the dispersing polymer is from 19:1 to and including 2:1.

A resin composition is provided. The resin composition includes a thermosetting resin component and a filler, wherein the thermosetting resin component has a dissipation factor (Df) of no more than 0.006 at 1 GHz, the filler is a ceramic powder obtained through a sintering process at a temperature ranging from 1300 C. to less than 1400 C., and the amount of the filler is 10 parts by weight to 600 parts by weight per 100 parts by weight of the thermosetting resin component.

Among the various aspects of the present disclosure are the provision of conductive granular hydrogel compositions, bioelectric devices comprising the conductive granular hydrogel compositions such as wearable electrodes, conductive filaments, bioink compositions comprising living cells encapsulated in the conducting polymer composition, bioelectronic hydrogel-based devices, and methods of use thereof. The conducting 3D hydrogel is characterized by a void fraction value and high conductivity for in vitro cell applications. In addition, methods of producing the conducting 3D hydrogels and bioinks, methods of fabricating the bioelectronic hydrogel-based devices, and methods of performing bioelectronic measurements using the bioelectronic hydrogel-based devices are disclosed.

Aspects herein relate to biocompatible polyisobutylene-fiber composite materials and related methods. In one aspect a biocompatible composite material is included. The biocompatible composite material can include a network of fibers comprising one or more polymers to form a substrate and a continuous polyisobutylene matrix that is non-porous and completely surrounds the electrospun fibers. Other aspects are included herein.

A fluororesin including a residue unit of formula (1) and having a haze value equal to 2% or less of a heat-press molded product (thickness 1 mm) with a small haze value of a melt-molded product and a method for producing the same. ##STR00001##
Rf.sub.1, Rf.sub.2, Rf.sub.3 and Rf.sub.4 each independently represent one of the groups consisting of a fluorine atom, a linear perfluoroalkyl group having 1 to 7 carbon atoms, a branched perfluoroalkyl group having 3 to 7 carbon atoms, and a cyclic perfluoroalkyl group having 3 to 7 carbon atoms, the perfluoroalkyl group may have an ethereal oxygen atom, Rf.sub.1, Rf.sub.2, Rf.sub.3 and Rf.sub.4 may be linked to each other to form a ring having 4 or more and 8 or less carbon atoms, and the ring may include an ethereal oxygen atom.

A production method capable of producing a hollow fine particulate containing a perfluororesin, having a large average particle size, and having a monoporous structure. A method for producing a hollow fine particulate including: a step A of dispersing a solution containing a perfluoromonomer and a non-polymerizable solvent capable of dissolving the perfluoromonomer and having an SP value of 9.00 to 9.80 (cal/cm.sup.3).sup.1/2 into water to provide a dispersion; a step B of polymerizing the perfluoromonomer to provide a phase-separated fine particulate containing a perfluororesin and having a monoporous structure; and a step C of removing the non-polymerizable solvent in the phase-separated fine particulate to provide a hollow fine particulate having a monoporous structure.