C08F2438/02

Production of dispersants by nitroxide-mediated solution polymerization

The present invention relates to processes for preparing a copolymer, especially a dispersant for solid particles, in particular a dispersant for mineral binder compositions, wherein ionizable monomers m1 and side chain-bearing monomers m2 are polymerized by nitroxide-mediated solution polymerization to give a copolymer, wherein the polymerization is conducted in the presence of an agent comprising a carboxyl group-bearing and phosphated alkoxy amine.

Method for producing maleimide block copolymer

An object of the present invention is to provide a method for producing a maleimide block copolymer having an acrylic monomer-derived structural unit. Provided is a method for producing a block copolymer having a polymer block (A) containing an acrylate-derived structural unit and a polymer block (B) containing an N-substituted maleimide ring structure and a methacrylate-derived structural unit, the method comprising a polymerization step in which a nitroxide polymer (A1) having a polymer block (A) and an organophosphorus unit-containing nitroxide structure at an end of the polymer block (A) and a monomer (B1) containing a methacrylate and an N-substituted maleimide are polymerized in the presence of a thiol compound (C1).

HOMOGENEOUS ANAEROBICALLY STABLE QUANTUM DOT CONCENTRATES

The present disclosure provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise at least one population of nanostructures, at least one reactive diluent, at least one anaerobic stabilizer, and optionally at least one organic resin. The present disclosure also provides nanostructure films comprising a nanostructure layer and methods of making nanostructure films.

CONCRETE FLOW IMPROVERS AND WATER REDUCERS

The present invention relates to a process for preparing a poly(meth)acrylic acid, characterized in that a (meth)acrylic acid-containing process stream from (meth)acrolein synthesis is subjected to free-radical polymerization. The invention also relates to the esterification of the polymer obtained to give a homopolymer or copolymer ester, and to the use thereof as additive, flow improver and water reducer.

Thiocarbonylthio compounds as chain transfer agents suitable for raft polymerization

The present invention relates to a compound having the structure of formula (I), wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.7 are as described herein. The present invention also relates to a process for the preparation of a compound of formula (I) and to a process for the synthesis of a polymer using the compound of formula (I) through controlled free radical polymerization. ##STR00001##

COMPOSITION FOR HOLOGRAPHIC RECORDING MEDIUM, AND HOLOGRAPHIC RECORDING MEDIUM
20210116805 · 2021-04-22 · ·

A holographic recording medium composition comprising component (e): a compound having an isocyanate group or an isocyanate-reactive functional group and further having a nitroxyl radical group, wherein component (e) contains component (e-1) below: component (e-1): a compound having a heterobicyclic ring structure or a heterotricyclic ring structure, the heterobicyclic ring structure or the heterotricyclic ring structure being obtained by replacing a carbon atom in a bicyclic ring structure or a tricyclic ring structure by the nitroxyl radical group.

ION EXCHANGE MEMBRANE AND METHOD OF MANUFACTURING AN ION EXCHANGE MEMBRANE

A method of manufacturing an anion exchange membrane comprises the following steps: grafting side chains onto a TPE; purifying the grafted TPE; casting the purified grafted TPE; and functionalising the grafted TPE to obtain a cationic moiety. The anion exchange membrane may be used in electrochemical devices including electrolysers, fuel cells or compressors, and is particularly suited to anion exchange membrane electrolysers operating with a dry-cathode.

PROCESS FOR TRANSFER IMPRINTING

A process for transfer imprinting using a novel family of anti-sticking layers, such as for nanoimprint lithography processes, is described.

METHOD TO PRODUCE COLORLESS, HIGH POROSITY, TRANSPARENT POLYMER AEROGELS

A dried polymer aerogel has a Brunauer-Emmett Teller (BET) surface area over 100 m2/g, porosity of greater than 10%, visible transparency greater than 20%, color rendering index of over 20%, and average pore size of less than 100 nm.

Secondary amine, radical, and alkoxy amine compound

An alkoxy amine compound is provided, which has a chemical structure of: ##STR00001##
wherein each of R.sup.1 is independently H, C.sub.1-6 alkyl group, or C.sub.1-6 alkoxy group; R.sup.2 is C.sub.1-6 alkyl group, R.sup.3 is (C.sub.xH.sub.2x)OH or (C.sub.xH.sub.2x+1), and x is 1 to 8; R.sup.4 is H or C.sub.1-6 alkyl group; R.sup.5 is ##STR00002##
and R.sup.6 is H or C.sub.1-8 alkyl group; R.sup.7 is H or C.sub.1-6 alkyl group, R.sup.8 is ##STR00003##
Ini is a residual group of a radical initiator; and n is an integer of 1 to 10000.