Described is a thiol-ene composition that includes a resinous mixture of at least a first monomer and at least a second monomer, in which the first monomer is a polyfunctional allyl monomer and the second monomer is a polyfunctional thiol and the molar ratio of the first monomer to the second monomer is about 60:40 to about 80:20. Said composition further includes conductive colloidal particles in an amount between about 4 wt % and about 7 wt % of the total composition. When cured, a formed composition offers self-healing properties and resistance to abrasions and scratches that exceed the levels found in comparative thiol-enes that either lack the addition of the conductive colloidal particles and/or have a less effective ratio of first monomer to second monomer.

Dual cure compositions include a combination of an organoborane complex and a radical oxidizing agent as co-catalysts. The compositions are curable under dark conditions and can be used to catalyze thiol-ene reactions. The compositions are useful as sealants.

A resin composition capable of forming a cured film having a high refractive index, high transparency and high heat resistance, and a polymer which is used for the resin composition. A polymer having a structural unit of Formula (1): ##STR00001##
wherein A.sub.1 and A.sub.2 are each independently an O group or a C(O)O group; X is a divalent organic group having at least one aromatic ring or heterocyclic ring, wherein, when the X has two or more aromatic rings or heterocyclic rings, the rings are optionally bonded to each other via a single bond, are optionally bonded to each other via a heteroatom, or optionally form a condensed ring; and Y is a divalent organic group having at least one aromatic ring or condensed ring. A resin composition, includes: the polymer; a cross-linking agent; and a solvent.

A resin composition capable of forming a cured film having a high refractive index, high transparency and high heat resistance, and a polymer which is used for the resin composition. A polymer having a structural unit of Formula (1): ##STR00001##
wherein A.sub.1 and A.sub.2 are each independently an O group or a C(O)O group; X is a divalent organic group having at least one aromatic ring or heterocyclic ring, wherein, when the X has two or more aromatic rings or heterocyclic rings, the rings are optionally bonded to each other via a single bond, are optionally bonded to each other via a heteroatom, or optionally form a condensed ring; and Y is a divalent organic group having at least one aromatic ring or condensed ring. A resin composition, includes: the polymer; a cross-linking agent; and a solvent.

The present invention provides a method for producing granular polyarylene sulfide (PAS) with increased average particle size and enhanced particle strength, a method for increasing the average particle size of granular PAS, a method for enhancing the particle strength of granular PAS, and granular PAS. The method for producing PAS according to the present invention includes: step 1: a preparation step of preparing a mixture containing an organic amide solvent, a sulfur source, water, a dihalo aromatic compound, and an alkali metal hydroxide; step 2: a pre-stage polymerization step of initiating a polymerization reaction by heating the mixture to produce a prepolymer having a dihalo aromatic compound conversion ratio of not less than 50% in the presence of less than an equimolar amount of an alkali metal hydroxide per 1 mol of the sulfur source; step 3: a post-stage polymerization step of continuing the polymerization reaction in the presence of not less than an equimolar amount of an alkali metal hydroxide per 1 mol of the sulfur source to obtain a reaction product mixture; and step 4: a cooling step of cooling the reaction product mixture after the post-stage polymerization step; wherein step 4 is performed in the presence of at least one type of auxiliary agent such as a carboxylate.

A polymer is described herein that includes a plurality of N-J-N or NCS repeating units, wherein each J is independently a carbon atom, an alkyl group, or an aryl group; a plurality of hydrophilic groups bonded with the repeating units; and a plurality of hydrophobic groups bonded with the hydrophilic groups and the repeating units. Such polymers may be made into hydrogels by exposure to water, and the hydrogels may be used as delivery vehicles for various payloads.

A polymer is described herein that includes a plurality of N-J-N or NCS repeating units, wherein each J is independently a carbon atom, an alkyl group, or an aryl group; a plurality of hydrophilic groups bonded with the repeating units; and a plurality of hydrophobic groups bonded with the hydrophilic groups and the repeating units. Such polymers may be made into hydrogels by exposure to water, and the hydrogels may be used as delivery vehicles for various payloads.

In an embodiment is provided a polymer that includes a plurality of N-J-N or NCS repeating units, wherein each J is independently a carbon atom, an alkyl group, or an aryl group; a plurality of hydrophilic groups bonded with the repeating units; and a plurality of hydrophobic groups bonded with the hydrophilic groups and the repeating units. In another embodiment is provided hydrogels of such polymers. The hydrogels may be used as delivery vehicles for various payloads. In another embodiment is provided methods of forming such polymers.

In an embodiment is provided a polymer that includes a plurality of N-J-N or NCS repeating units, wherein each J is independently a carbon atom, an alkyl group, or an aryl group; a plurality of hydrophilic groups bonded with the repeating units; and a plurality of hydrophobic groups bonded with the hydrophilic groups and the repeating units. In another embodiment is provided hydrogels of such polymers. The hydrogels may be used as delivery vehicles for various payloads. In another embodiment is provided methods of forming such polymers.

A dual-curable sealant composition includes a polysulfide having an SH group, a metal oxide catalyst, and an alkylborane amine catalyst. A cured sealant is also formed from the dual-curable sealant composition. Moreover, a dual-cured sealant is formed that includes the polymerization product of the polysulfide reacted in the presence of the metal oxide catalyst and the alkylborane amine catalyst. Further, a dual-curable sealant system includes a first component including the polysulfide and the alkylborane amine catalyst and a second component including the metal oxide catalyst. An article is formed that includes a substrate and the cured sealant disposed on the substrate. Even further, a method of forming the dual-curable sealant composition includes the steps of providing the polysulfide, the alkylborane amine catalyst, and the metal oxide catalyst, and combining the polysulfide, the alkylborane amine catalyst, and the metal oxide catalyst to form the dual-curable composition.