C08G59/4085

Salts of diaminoacetals and diaminoketals and their synthesis, and their transformations to diaminoacetals and diaminoketals

This application relates, in part, to novel salts represented by the following structure of Formula (1): ##STR00001## wherein R.sup.1a is selected from the group consisting of hydrogen and optionally substituted alkyl (e.g., unsubstituted C.sub.1-6 alkyl, e.g., CH.sub.3); R.sup.1b is optionally substituted alkyl (e.g., unsubstituted C.sub.1-6 alkyl, e.g., CH.sub.3); each occurrence of R.sup.2 and R.sup.3 is independently selected from the group consisting of hydrogen, optionally substituted alkyl, optionally substituted cycloalkyl, and optionally substituted aryl; R.sup.2 and R.sup.3 can combine with each other to form optionally substituted cycloalkyl; each m and n is independently an integer ranging from 1 to 20 (e.g., m and n is independently an integer ranging from 1 to 5); and each of Q.sup.1 and Q.sup.2 is independently a counterion (e.g., each of Q.sup.1 and Q.sup.2 is independently a counterion selected from the group consisting of chloride, bromide, fluoride, iodide, acetate, carboxylate, hydrogen sulfate, nitrate, and phenolate, and sulfonate, e.g., chloride), and methods of making the same.

Heat-Curable Hybrid Epoxy Functional Composition and Transparent Heat-Cured Caustic-Resistant Coatings Prepared Therefrom
20190345286 · 2019-11-14 ·

The present invention relates to a heat-curable composition comprising at least one epoxy monomer comprising two or three epoxy groups, which is not a hydrolysis-polymerizable silicon compound, at least one epoxy compound bearing at least one silicon atom having at least one hydrolyzable group directly linked to the silicon atom and at least one epoxy group, and at least one epoxy ring-opening catalyst. The composition comprises at least 50% by weight of compounds having at least one epoxy group, relative to the total weight of polymerizable compounds present in the composition and provides upon pre-curing a tack-free coating that can be removed by treatment with a solution of sodium hydroxide, and upon post-curing a coating that cannot be removed by treatment with a solution of sodium hydroxide.

BASE GENERATOR, REAGENT, ORGANIC SALT, COMPOSITION, METHOD FOR MANUFACTURING DEVICE, CURED FILM AND DEVICE
20190330247 · 2019-10-31 · ·

A curing agent or a curing accelerator which is easy to synthesize and may cure an epoxy resin and the like, or may accelerate the curing is provided. A curing agent or a curing accelerator according to some embodiments of the present invention has a highly-coordinated silicon structure.

PROCESS FOR FRONTAL POLYMERIZATION OF CATIONICALLY POLYMERIZABLE MONOMERS

The invention relates to a process for free radical-induced cationic frontal polymerization of cationically polymerizable monomers using a combination of at least one cationic polymerization initiator and at least one activator for said at least one initiator, characterized in that benzopinacol is used as said activator.

Thermosetting alkoxysilyl compound having two or more alkoxysilyl groups, composition and cured product comprising same, use thereof, and method for preparing alkoxysilyl compound

The present invention relates to: a thermosetting alkoxysilyl compound (hereinafter, referred to as alkoxysilyl compound) having two or more alkoxysilyl groups showing excellent heat-resistance characteristics in a composite; a composition and a cured product comprising the same; a use thereof; and a method for preparing an alkoxysilyl compound. The composition of an alkoxysilyl compound, comprising a novel alkoxysilyl compound according to the present invention shows, in a composite, improved heat-resistance characteristics, i.e., an effect of decreasing the CTE of the composition of an alkoxysilyl compound and not showing a glass transition temperature (hereinafter, referred to as Tg-less). Further, the cured product comprising an alkoxysilyl compound according to the present invention shows excellent flame retardant properties due to the alkoxysilyl groups.

Resin composition, backing material for ultrasonic vibrator, ultrasonic vibrator, and ultrasonic endoscope

A resin composition of the present invention contains: an epoxy resin (A); a hardener (B); and an ion exchanger (C). At least one of the epoxy resin (A) and the hardener (B) contains a modified silicone (S), and the epoxy resin (A) is at least one type selected from the group consisting of a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, a phenol novolac type epoxy resin, and an epoxy-modified silicone.

Chromate free pretreatment primer

A coating comprising epoxy functional resin, corrosion resistant particles, and a multi-functional crosslinker are disclosed as are methods of using such a coating to coat at least a portion of a substrate and a substrate coated thereby.

LIQUID EPOXY RESIN COMPOSITION FOR SEALING, AND ELECTRONIC COMPONENT DEVICE
20190127571 · 2019-05-02 ·

A liquid epoxy resin composition for sealing includes an epoxy resin, a curing agent, and a particle having a core-shell structure. In the composition, the particle having a core-shell structure includes a core including a cross-linked polysiloxane and a shell including a polymer in which the content of a structural unit having an epoxy group is 10% by mass or more.

APCHA as a building block in curing agent formulations for structural adhesives

The invention relates to structural adhesive compositions and more particularly to two-component (2K) structural adhesive compositions. The two components chemically react to bond structural surfaces. N-(3-Aminopropyl)cyclohexylamine (APCHA) has been found to be an improved curing agent for use with epoxy resins in 2K adhesive compositions. APHCA exhibits favorable features including viscosity, pot life and reactivity, and adhesive and thermal performance after curing with epoxy resin. These features and its unique chemistry allow the use of APCHA in curing agent formulations for structural adhesives, in particular wind turbine blade adhesives. APCHA solves issues with viscosity build-up, working time, through-cure, compatibility and adhesive performance that cannot be addressed with the commonly used amine formulations.

Self-healing epoxy resin composition

A self-healing hydrophobic epoxy resin composition is provided. The self-healing epoxy resin composition comprises an epoxy resin component and a hardener component, the hardener component comprises at least 0.1 weight % of a modified epoxy resin hardener. The modified epoxy resin hardener is a reaction product of an amino modified oligomericsiloxane and a carboxylic acid anhydride. A process for preparing the modified epoxy resin hardener is also disclosed.