Provided herein are compositions comprising: a scaffold polymer having one or more acryloyl groups or one or more methacryloyl groups; optionally a porogen and a crosslinking agent, compositions that upon crosslinking form a hydrogel for use in cell encapsulation and methods for immunocytochemistry of encapsulated cells. Scaffold polymers used are selected from: Poly(ethylene glycol) diacrylate (PEGDA); Poly(ethylene glycol) dimethylacrylate (PEGDMA); Poly(ethylene glycol) methyl ether acrylate (PEGMEA); Poly(ethylene glycol) methacrylate (PEGMA); and Poly(ethylene glycol) methyl ether methacrylate (PEGMEMA), and porogens selected from: Poly(ethylene glycol) (PEG); Chitosan; Agarose; Dextran; Hyaluronic acid; Poly(methyl methacrylate) (PMMA); Cellulose and derivatives thereof; Gelatin and derivatives thereof; and Acrylamide and derivatives thereof. The invention also provides, at least in part, compositions for forming a porous hydrogel around a cell suitable for immunostaining of cells within the hydrogel.

The present invention provides a film for a liquid crystal device that is a film (15 or 16) used for a liquid crystal device (10) and contains a thermoplastic resin, in which the NI point change of liquid crystal upon contacting the film with the liquid crystal is −2° C. to +2° C.

A reactive composition is disclosed for making a polyisocyanurate-polyurethane comprising rigid foam (PIR-PUR), said reactive composition comprising a polyisocyanate composition, an isocyanate-reactive composition, at least one catalyst compound suitable for making the PIR-PUR comprising foam, at least one blowing agent; and optionally one or more surfactants, one or more flame retardants, one or more antioxidants, or combinations thereof characterized in that the reactive composition further comprises a reactive viscosity reducer selected from at least one acrylate and/or methacrylate compound having no isocyanate-reactive groups and having a viscosity at 25° C. below 100 mPa.Math.s.

Provided is a heat-curable resin composition capable of yielding a cured product that has a superior dielectric property and heat resistance and is thus useful for high-frequency purposes. Particularly, there are provided a composition containing the following components (A), (C) and (D); and a composition containing the following components (A) and (B). The components (A), (B), (C) and (D) are: (A) a cyclopentadiene compound represented by the following formula (1) and/or an oligomer(s) of the cyclopentadiene compound

##STR00001##

wherein R represents a group selected from an alkyl group, an alkenyl group and an aryl group, n represents an integer of 1 to 4, each of x1 and x2 independently represents 0, 1 or 2, provided that when R represents an alkyl group or an aryl group, x1 represents 1 or 2, and x1 and x2 satisfy 1≤x1+x2≤4; (B) a cyclic imide compound; (C) a curing accelerator; and (D) an inorganic filler.

A circuit board includes an insulating made by a low dielectric resin composition includes a low dielectric resin containing acid anhydride, an epoxy resin, polyphenylene ether resin with vinyl and active esters, maleic acid liquid polybutadiene, and an accelerator. Such low dielectric resin can be dissolved in organic solvent more easily than a low dielectric resin without acid anhydride, and the low dielectric resin containing acid anhydride has a better compatibility with other organic components than a low dielectric resin without acid anhydride. A low dielectric resin composition with lower dielectric constant and better properties can thus be obtained.

A protective layer to be used in a foldable device having a cover window containing glass, contains: at least one of the following (A), (B), or (C), wherein (A) is a polymerized substance of a polymerizable compound which has one or more hydrogen bonding group and three or more (meth)acryloyl groups in a molecule of the polymerizable compound, in which a hydrogen-bonding proton value is 3.5 mol/kg or more and a (meth)acryloyl value is 4.8 mol/kg or more, (B) is a compound including a metal coordinate bond, and (C) is a compound including a host-guest binding.

The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group with

(b) at least one polyether of the general structural formula (I)

##STR00001##

in which

R is a C.sub.3 to C.sub.6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.

A method for manufacturing a crosslinked polyolefin separator and the crosslinked polyolefin separator obtained therefrom are provided. The method includes non-grafted polyolefin having a weight average molecular weight of 300,000 or more and silane-grafted polyolefin having a weight average molecular weight of 300,000 or more. The method minimizes gel formation, a side reaction occurring in an extruder during the manufacture of a-the separator, and provides a-the separator having a uniform surface.

A low dielectric resin composition comprises a low dielectric resin containing acid anhydride, an epoxy resin, a rigid cross-linking agent, a soft cross-linking agent, and an accelerator. Such low dielectric resin can be dissolved in organic solvent more easily than a low dielectric resin without acid anhydride, and the low dielectric resin containing acid anhydride has a better compatibility with other organic components than a low dielectric resin without acid anhydride. A low dielectric resin composition with lower dielectric constant and better properties can thus be obtained. A film and a circuit board using such resin composition are also provided.

The present invention relates to a pigmented aqueous basecoat material comprising a polyether-based reaction product which is preparable by reaction of (a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or the halide of a carboxylic acid group with (b) at least one polyether of the general structural formula (I) ##STR00001##
in which
R is a C.sub.3 to C.sub.6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of 800 to 4000 g/mol, the components (a) and (b) being used in the reaction in a molar ratio of 0.7/2.3 to 1.6/1.7 and the resulting reaction product possessing an acid number of 10 to 50 mg KOH/g.