A composition, process, and device are disclosed. The composition includes a polymer formed by reacting an epoxy compound with an amine curing agent. The epoxy compound comprises a Diels-Alder dimer and an ester moiety. The process includes providing a polymer formed by reacting the epoxy compound with the amine curing agent. The device includes a material that includes the polymer.

A composition, including at least one silane group-containing polymer that is liquid at room temperature, at least one epoxide liquid resin, and at least one aliphatic polyamine having a molecular weight of at least 115 g/mol and having at least three amine hydrogens reactive toward epoxide groups. The composition is a liquid that is configured to form a sealing membrane after curing. The sealing film applied in liquid form is isocyanate-free, low-odor, and easy to process because of the low viscosity and the long open time. The sealing film cures quickly and forms a high-quality elastic material having good mechanical properties and good weather resistance.

A curing agent for a water-based epoxy resin, including a reaction composition (A) containing a reaction product of styrene and an amine compound represented by the following formula (1), a water-based epoxy resin composition containing the same, and a cured product thereof.
H.sub.2N—CH.sub.2-A-CH.sub.2—NH.sub.2  (1)
wherein A is a 1,2-phenylene group, a 1,3-phenylene group, or a 1,4-phenylene group.

This coating composition for an electrical steel sheet contains an epoxy resin, a phenolic curing agent (A) and one or more amine-based curing agents (B) selected from the group consisting of an aromatic amine and dicyandiamide, the amount of the phenolic curing agent (A) is 1 to 40 parts by mass with respect to 100 parts by mass of the epoxy resin, and the amount of the amine-based curing agents (B) is 0.5 to 5 parts by mass with respect to 100 parts by mass of the epoxy resin.

The present invention relates to a coating composition which is an anticorrosive paint for ship structures and can be coated by a regular airless painting machine, and is solvent-free or contains a low solvent content. The coating composition according to an embodiment of the present invention may exhibit excellent pot life, atomization and drying time, and is eco-friendly due to having a high solid content and thus lower VOC emissions.

Embodiments disclosed relate to a composition and a method of treating a formation. The method includes introducing a loss circulation material system through a wellbore into a formation, where the loss circulation material system is comprised of an esterified derivative of an epoxidized organic material and a curing agent. The esterified derivative of an epoxidized organic material has a formula of:

##STR00001##

where R′ comprises H, a substituted or an unsubstituted (C1-C12) hydrocarbyl group; and where R″ comprises a substituted or an unsubstituted (C2-C30) hydrocarbyl group, including where at least one oxygen atom is attached to two different adjacent carbon atoms of the (C2-C30) hydrocarbyl group. The method also includes maintaining wellbore conditions such that the loss circulation material system cures into a loss circulation material in the formation. The cured loss circulation material may withstand a pressure differential up to about 20,000 psid.

To provide a resin composition that is suitable for use as a matrix resin for a fiber-reinforced composite material, the resin composition exhibiting excellent impregnation properties into reinforcing fibers and rapid curing properties, giving a molded product having high heat resistance when cured, and exhibiting excellent productivity in a short time. A two-pack curable resin composition for a fiber-reinforced composite material, including a main agent that includes an epoxy resin (A) and an ester compound (B) represented by general formula (1) below, and a curing agent that includes an amine compound (C):

##STR00001##

(R.sub.1 and R.sub.2 each denote an alkyl group or an aryl group, and R.sub.1 and R.sub.2 may bond together to form a cyclic structure; or R.sub.1 may be an ester-containing group).

The present invention relates to compositions (self-thermally) curable on demand under the triggering action of UV-visible to near-infrared irradiation of moderate intensity, method of using same for accelerated photopolyaddition of cyclic ether-amine resins or ultrafast dark curing of cyclic ether-amine resins, and articles obtained by such method. The invention also relates to a resin casting, film or coated substrate, and an adhesive layer or bonding agent, comprising acyclic ether-amine resin obtained by an accelerated curing process according to the invention. The invention additionally relates to the use of a composition of the invention for increasing the delamination strength of laminated composite materials.

A process for preparing a curing agent for epoxy resins, in which an amine mixture including at least one parent amine of the formula (I) and at least one alkylated amine of the formula (II) is reacted or adducted with at least one glycidyl ether of the formula (III). The amine mixture is especially a reaction mixture from the partial alkylation of the amine of the formula (I). The process described enables, with low energy expenditure and high space-time yield, curing agents of low odor, low toxicity, low viscosity and high reactivity for epoxy resins and epoxy resin products that cure rapidly at ambient temperatures and especially also under cold conditions and at the same time enable high-quality coatings having an even, shiny surface.

A latent curable, single component, epoxy resin with a viscosity at 25° C. of between 50 and 100 poise may include, by weight: i) 60-90% of epichlorohydrin and bisphenol F; ii) 10-40% of epichlorohydrin and bisphenol A; and iii) 2-10% of a reactive catalyst, which is an encapsulated aliphatic polyamine, which cures above 80° C.