Polycarbonate polyols are made by copolymerizing carbon dioxide and an alkylene oxide in the presence of a starter compound and a carbonate catalyst. The process is operated in semi-batch mode by combining starter, catalyst and a small amount of alkylene oxide in a reaction vessel, pressurizing the vessel with carbon dioxide, initiating polymerization, and then feeding both carbon dioxide and alkylene oxide to the vessel under polymerization conditions without removal of product until the feeds are completed.

An etheramine mixture comprising one or more polyether diamines, methods for its production, and its use as a curing agent for epoxy resins. The etheramine mixture may also be used in the preparation of polyamides and polyurea compounds.

The invention relates to epoxide-amine adducts obtainable by reaction of one or more primary amines (A) of general formula (I)
Q-NH.sub.2  (I)
with one or more monoepoxides (B) of general formula (II) ##STR00001##
wherein Q is a radical R.sup.t-[OEt].sub.n[OPr].sub.m[OBu].sub.s-, in which R.sup.t is a radical selected from alkyl radicals having 1 to 6 carbon atoms, OEt is an ethylene oxide radical, OPr is a propylene oxide radical and OBu is a butylene oxide radical, n is a number from 0 to 100, m is a number from 3 to 50 and s is a number from 0 to 20 and n+m+s=3 to 170, R is an organic radical selected from aliphatic radicals having 4 to 24 carbon atoms, aromatic radicals having 6 to 18 carbon atoms and araliphatic radicals having 7 to 34 carbon atoms, and p is 0 or 1, wherein (i) the primary amine(s) (A) and the monoepoxide(s) (B) are reacted in an equivalents ratio (A):(B) of from 1:2 to 1:1.35; and (ii) at least 40 mol % of the radicals R are selected from aromatic radicals having 6 to 18 carbon atoms and araliphatic radicals having 7 to 24 carbon atoms; and optionally subsequent salification and/or quaternization and/or modification of the reaction product. The invention furthermore relates to wetting agents and dispersants comprising or consisting of the epoxide-amine adducts and also to the production of the wetting agents and dispersants and to the use of the epoxide-amine adducts and the wetting agents and dispersants for the production of dispersions. The invention also relates to dispersions and particle formulations comprising the epoxide-amine adducts and wetting agents and dispersants.

The present invention relates to an ultraviolet curable ink composition including a colorant, an epoxy monomer, an oxetane monomer, a cationic photopolymerization initiator, and a polymerization inhibitor, wherein the weight ratio of epoxy monomer:oxetane monomer is 1:0.5 to 1:6, to a method for forming a bezel pattern by using the same, to a bezel pattern manufactured thereby, and to a display substrate having the same.

The present invention relates to an ultraviolet curable ink composition including a colorant, an epoxy monomer, an oxetane monomer, a cationic photopolymerization initiator, and a polymerization inhibitor, wherein the weight ratio of epoxy monomer:oxetane monomer is 1:0.5 to 1:6, to a method for forming a bezel pattern by using the same, to a bezel pattern manufactured thereby, and to a display substrate having the same.

A process can be used for preparing polyether-modified polybutadienes. The process involves reacting at least one polybutadiene (A) with at least one epoxidizing reagent (B) to give at least one epoxy-functional polybutadiene (C). The at least one epoxy-functional polybutadiene (C) is then reacted with at least one hydroxy-functional compound (D) to give at least one hydroxy-functional polybutadiene (E). The at least one hydroxy-functional polybutadiene (E) is finally reacted with at least one epoxy-functional compound (F) to give at least one polyether-modified polybutadiene (G).

The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.

The invention provides a method for sequence controllable block copolymerization of a cyclic ester monomer and an epoxy monomer, including: in an inert atmosphere, adding the epoxy monomer and/or the cyclic ester monomer into a catalytic initiating system including an organic base and an alkyl borane for reaction, so as to obtain a sequence controllable polyether-polyester block copolymer of the cyclic ester monomer and the epoxy monomer, i.e. a polyester-b-polyether or a polyether-b-polyester. The invention can prepare various polyether-polyester block copolymers of which the molecular weights, block sequences, block ratios and pendant group combinations can be flexibly adjusted. The invention provides a method for continuously preparing an aliphatic polyester-polyether block copolymer by a one-pot method utilizing a catalytic system of a metal-free Lewis acid-base pair.

A process for producing a polyoxymethylene-polyoxyalkylene copolymer is provided. The process comprises reacting a polymer formaldehyde compound of an alkylene oxide and a specific component (X) in the presence of a double metal cyanide (DMC) catalyst. A polyoxymethylene-polyoxyalkylene copolymer can be obtained by means of such a process and to the use of same for producing a polyurethane polymer.

A glycidyl amine epoxy resin(s) and a process for production of glycidyl amine epoxy resin(s) are disclosed. The glycidyl amine epoxy resin(s) is/are free from Bisphenol A (BPA) and Bisphenol F (BPF) and are based on AMES negative amine precursors.