Various embodiments disclosed related to sealant tape. The sealant tape can include a cured product of a sealant composition including a curable liquid that includes a polysulfide, a polythioether, a copolymer thereof, or a combination thereof. The sealant composition also includes a curing agent for curing the curable liquid. Various embodiments provide cured products of the sealant composition, sealant tapes including the cured product, and sealant tapes including any suitable material with an adhesive pattern thereon.

Disclosed herein are methods and apparatuses for curing a polymerizable material capable of cure through a redox reaction by electrically contacting the polymerizable material with an anode and a cathode to create a voltage bias that promotes curing of the polymerizable material.

Polyolefin based vitrimers having at least one disulfmyl linking unit are described. Uses and methods of making the vitrimers are also described.

The present disclosure relates to a method of more efficiently separating and recovering a polyarylene sulfide exhibiting excellent strength, heat resistance, flame retardancy, and processability when processed into a molded product after polymerization.

Compositions that are curable by free radical redox reactions are disclosed. Free radical curing reactions between polythiols and polyalkyenyls are initiated by the reaction of metal complexes and organic peroxides. The compositions are useful as sealants.

The removal of mercaptans from polymer compositions is described, where removal occurs by at least one of: contacting the polymer composition with a radical initiator that reacts with the mercaptain compound to form a non-odorous compound; and contacting the polymer composition with a transition metal that immobilizes the mercaptan compound.

A bio-electrode composition includes (A) an ionic material and (B) a lithium titanate powder. The component (A) is a polymer compound containing a repeating unit-a having a structure selected from an ammonium salt, a sodium salt, a potassium salt, and a silver salt of any of fluorosulfonic acid, fluorosulfonimide, and N-carbonyl-fluorosulfonamide. Thus, the present invention provides a bio-electrode composition capable of forming a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, is light-weight, can be manufactured at low cost, and can control significant reduction in the electric conductivity even when the bio-electrode is wetted with water or dried; a bio-electrode including a living body contact layer formed of the bio-electrode composition; and a method for manufacturing the bio-electrode.

Compositions that are curable to polythioether polymers are provided, comprising: a) a dithiol monomer; b) a diene monomer; c) a radical cleaved photoinitiator; d) a peroxide; and e) an amine; where the peroxide and amine together are a peroxide-amine redox initiator. In some embodiments, the amine is a tertiary amine. In some embodiments, the amine is selected from the group consisting of dihydroxyethyl-p-toluidine, N,N-diisopropylethylamine, and N, N, N′, N″, N″-pentamethyl-diethylenetriamine. In some embodiments, the peroxide is selected from the group consisting of di-tert-butyl peroxide, methyl ethyl ketone peroxide, and benzoyl peroxide. In some embodiments, the composition may additionally comprise a polythiol monomer having three or more thiol groups.

The present invention relates to a method for the manufacture of a poly(aryl ether) such as a poly(aryl ethersulfone) or a poly(aryl ether ketone) including the use of an organic base having a pKa of at least 10.

Process for producing polyarylene ether beads from a polyarylene ether solution, comprising the steps of i) dividing the polyarylene ether solution into droplets, ii) transferring the droplets into a precipitation bath to form polyarylene ether beads in the precipitation bath which (A) comprises at least one aprotic solvent (component (1)) and at least one protic solvent (component (2)), (B) has a temperature of 0° C. to T.sub.c, where the critical temperature T.sub.c in [° C.] can be determined by the numerical equation T.sub.c=(77−c)/0.58 in which c is the concentration of component (1) in the precipitation bath in [% by weight] and (C) has component (1) in concentrations of 5% by weight to c.sub.c, where the critical concentration c.sub.c in [% by weight] can be determined by the numerical equation c.sub.c=77−0.58*T in which T is the temperature in the precipitation bath in [° C.], where
the percentages by weight are each based on the sum of the percentages by weight of component (1) and of component (2) in the precipitation bath.