Solvent-linked porous covalent organic polymers (COPs) and a method of preparing the same are described. The porous covalent organic polymers are linked by a solvent and are thus suitable for the transportation and storage of natural gas. A method of preparing the porous covalent organic polymers by conducting alkylation polymerization between an aromatic monomer and a chlorine-based solvent in the presence of a Lewis acid catalyst is described. Porous stretchable covalent organic polymers having pores with various sizes can be synthesized simply and quickly at room temperature and atmospheric pressure without a heating or purification step. The covalent organic polymers have very high natural gas storage capacity due to the flexible porous network structure thereof and thus are suitable for storage and transportation of natural gas and useful as a natural gas adsorbent.

A process for manufacturing an aromatic diether, including the reaction of a compound A including at least two halogenated aromatic groups with a compound B, B being an aromatic alkoxide, optionally in the presence of a compound C acting as reaction solvent, the molar proportion of compound B to compound A being at least 2:1 and the molar amount of compound C to compound A being, where appropriate, not more than 10:1. Also, a process for manufacturing a polyaryl ether ketone.

A polyaromatic electrolyte for a fuel cell electrode includes a structure represented by Formula 1, wherein in Formula 1, Ar is a neutral unit represented by one of Formula 2A and Formula 2B: ##STR00001##
The fuel cell electrode may include a catalyst suspended in the polyaromatic electrolyte.

Embodiments of the invention relate to a novel class of polymers with superior mechanical properties and chemical stability, as compared to known polymers. These polymers are particularly well suited for use in anion exchange membranes (AEMs), including those employed in fuel cells. Novel methods for the manufacture of these polymers are also described.

A method for producing polyether ketone ketone at a high yield is disclosed. According to the method, a catalyst injection rate is controlled during production to suppress scale formation, whereby the yield can be improved. A polyether ketone ketone produced by the method is disclosed. The method makes it possible to maintain an intrinsic viscosity (IV) of the polymer without a significant change and adjust a particle size of polyether ketone ketone by preventing an aggregation between resin particles, thereby suppressing scale formation.

A method for forming a polyaryletherketone is described. More particularly, a reaction mixture is initially supplied to the reactor vessel that contains one or more precursor monomers. A heteroaryl compound is also added to the reaction mixture. The reaction can be carried out according to, e.g., an electrophilic aromatic substitution reaction or a nucleophilic aromatic substitution reaction. The heteroaryl compound can serve as a dispersant to the polymer as it is formed. This minimizes the likelihood of gelling of the product polymer within the reactor vessel and limits the impact of process disruptions on the production of the polyaryletherketone.

Provided are a rubber composition containing from 1 to 30 parts by mass of an acid-modified polyolefin and from 0.3 to 20 parts by mass of at least one type selected from the group consisting of terpene resins and petroleum resins per 100 parts by mass of a diene rubber; and a pneumatic tire using the same.

Aspects of the present disclosure generally describe polyarylether ketones and methods of use. In some aspects, a composition includes one or more polymers of formulae (I), (II), or (III):

##STR00001##

Aspects of the present disclosure generally describe polyarylether ketones and methods of use. In some aspects, a composition includes one or more polymers of formula (IV):

##STR00001##

The present disclosure provides a process for producing a polymer, said process comprising polymerising a monomer system comprising a compound of formula: Ar—O—Ar—C(═O)—X—C(═O)—Ar—O—Ar in a reaction medium comprising a Lewis acid where: X is an aliphatic moiety and Ar is an aromatic moiety.