There is provided an epoxy resin composition containing an epoxy compound, which has a low viscosity and a low dielectric constant, and when added to a general-purpose epoxy resin composition, can lower a viscosity of the composition and can sufficiently lower a dielectric constant of an epoxy resin cured product obtained from the composition. An epoxy resin composition comprising: (a) an epoxy component containing at least an epoxy compound of formula [1]; and (b) a curing agent:

##STR00001##

wherein R.sup.1 to R.sup.3 each independently are a hydrogen atom or methyl group, and L.sup.1 to L.sup.3 each independently are pentamethylene group, hexamethylene group or heptamethylene group.

Provided herein are surface treating compositions for imparting beneficial surface properties to substrates. The compositions can be prepared by reacting a bio-based polyol with an isocyanate and an ionogenic molecule. The compositions can be used to treat a variety of substrates to provide enhanced properties to a surface of the substrate. Also provided are methods for the chemical modification of triglycerides and fatty acids and use thereof in creating beneficial surface treating compositions.

An aspect of the present invention is a resin composition containing a polybutadiene compound having an epoxy group in a molecule, a polyphenylene ether compound having at least one of a group represented by the following Formula (1) and a group represented by the following Formula (2) in a molecule, a styrene-based block copolymer, and a curing agent. ##STR00001## In Formula (1), p represents 0 to 10, Z represents an arylene group, and R.sub.1 to R.sub.3 each independently represent a hydrogen atom or an alkyl group. ##STR00002## In Formula (2), R.sub.4 represents a hydrogen atom or an alkyl group.

A process for preparing hydrogenated polyether-modified amino-functional polybutadienes includes: reacting at least one polybutadiene with at least one epoxidizing reagent to give at least one epoxy-functional polybutadiene; reacting the at least one epoxy-functional polybutadiene with at least one amino-functional compound to give at least one hydroxy- and amino-functional polybutadiene; reacting the at least one hydroxy- and amino-functional polybutadiene with at least one epoxy-functional compound to give at least one polyether-modified amino-functional polybutadiene; and hydrogenating the at least one polyether-modified amino-functional polybutadiene to give at least one hydrogenated polyether-modified amino-functional polybutadiene.

The invention relates to a resin having a plurality of cyclic carbonate groups comprising the reaction product of: a) an epoxidized sucrose fatty acid ester resin, and b) carbon dioxide where a) and b) are reacted under conditions sufficient to carbonylate a plurality of the oxirane groups of the epoxidized sucrose fatty acid ester resin, and optionally in the presence of a catalyst or of a solvent. In one embodiment the epoxidized sucrose fatty acid ester resin is epoxidized sucrose soyate. The invention also relates to methods for producing a resin having a plurality of cyclic carbonate groups. In a method of the invention, an epoxidized sucrose fatty acid ester resin is contacted with carbon dioxide under conditions sufficient to carbonylate a plurality of the oxirane groups of the epoxidized sucrose fatty acid ester resin, and optionally in the presence of a catalyst or of a solvent. Other embodiments of the invention relate to curable composition containing a) a resin having a plurality of cyclic carbonate groups; b) an alkyl amine curing agent having two or more reactive amine groups; and c) optionally, a catalyst; and cured compositions and articles.

The present invention provides methods, processes, and systems for the manufacture of three-dimensional articles made of polymers using 3D printing. A layer of prepolymer is deposited on a build plate to form a powder bed. The deposited powder bed is heated to about 50 C. to about 170 C. Then, a solution of activating agent is printed on the powder bed in a predetermined pattern, and a stimulus is applied converting the prepolymer to the final polymer. After a predetermined period of time, sequential layers are printed to provide the three-dimensional article. The three-dimensional object can be cured to produce the three-dimensional article composed of the final polymers.

The purpose of the present invention is to provide a silicone-modified epoxy resin which produces a cured product having excellent low gas permeability and strength; a composition of the resin; and an epoxy resin cured product obtainable by curing the composition. Disclosed is an epoxy resin represented by the following Formula (1): ##STR00001## wherein R.sup.1 independently represents a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms; R.sup.2 independently represents a monovalent aliphatic hydrocarbon group having 1 to 12 carbon atoms; R.sup.3 independently represents a monovalent aliphatic hydrocarbon group having 1 to 12 carbon atoms or a monovalent aromatic hydrocarbon group having 6 to 12 carbon atoms; R.sup.4 represents an oxygen atom or a divalent hydrocarbon group having an aliphatic cyclic structure; R.sup.5 represents silicone chain having a norbornane epoxy structure at either end; and X represents an organic group having a norbornane epoxy group.

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).

Provided is a curable composition capable of giving a lens that has excellent transfer accuracy from a mold and offers heat resistance and optical properties at excellent levels. The curable composition according to the present invention for lens formation contains a cycloaliphatic epoxide (A) represented by Formula (a), a cationic-polymerization initiator (B), and a polysiloxane (C) represented by Formula (c). The curable composition contains the polysiloxane (C) in an amount of 0.01% to 5% by weight based on the total amount of the curable composition. The curable composition according to the present invention for lens formation may further contain a siloxane compound (D) containing two or more epoxy groups per molecule.

##STR00001##

Disclosed herein are coatings and methods of making and use thereof. For example, disclosed herein are epoxy coatings comprising a (co)polymer derived from an epoxide and an epoxide curing agent; wherein the epoxide comprises an epoxidized biomass oil. Also disclosed herein are non-isocyanate polyurethane coatings comprising a (co)polymer derived from an cyclocarbonate and an amine curing agent; wherein the cyclocarbonate is derived from an epoxidized biomass oil. In the coatings described herein, the epoxidized biomass oil comprises an oil extracted from a biomass, which is an extracted biomass oil, and wherein said extracted biomass oil has been epoxidized; wherein the biomass comprises food waste, coffee beans, or a combination thereof.