C08G59/184

Coatings
11279834 · 2022-03-22 · ·

An ultra-high solids content primer coating composition comprising: (i) 5.0 to 50 wt % of at least one bisphenol F epoxy resin; (ii) 1.5 to 12 wt % of at least one silane; (iii) 0 to 20 wt % of at least one hydrocarbon resin; (iv) 0 to 15 wt % of at least one reactive diluent; (v) at least one curing agent; wherein said composition has a solids content of at least 90 wt % according to ASTM D5201-05; wherein said composition has a viscosity of 200 to 800 cps at 23° C. and 50% RH (ASTM D4287); and wherein the ratio between hydrogen equivalents in the curing agent and epoxy equivalents of the coating composition is in the range 50:100 to 120:100.

LOW-EMISSION EPOXY RESIN COMPOSITION

An epoxy resin composition, the curing components of which contain at least one amine of formula (I) and optionally at least one amine A which is, in particular, an adduct of a polyamine and an epoxide. The amine for formula (I) is used in particular in the form of a reaction product of the reductive alkylation of 1,2-ethylenediamine and an aldehyde or ketone. The epoxy resin composition is used in particular as a low-emission, room-temperature-curing epoxy-resin coating. It is characterised by good processibility, quick curing, high hardness, a nice surface and a low tendency to yellowing.

AMINE FOR LOW-EMISSION EPOXY RESIN COMPOSITIONS

The use of an amine of formula (I) as a component of a hardener for epoxy resins, hardeners for epoxy resins containing the amine of formula (I), and resultant epoxy resin compositions which can particularly be used as low-emission room-temperature-curing epoxy-resin coatings with high hardness and surface quality. The amine of formula (I) is low-odour and a very successful diluent for epoxy resin compositions. It is particularly obtained by reductive alkylation from 1,2-ethylenediamine or 1,2-propylenediamine and an aldehyde or ketone.

ADHESION PROMOTERS FOR CURABLE COMPOSITIONS
20210238461 · 2021-08-05 ·

Adhesion promoters, Curable compositions containing the adhesion promoters, cured compositions that are formed from the curable compositions, and articles containing the cured compositions are provided. The adhesion promoter has at least one epoxide group and a plurality of hydrolyzable silyl groups. The curable compositions include an adhesion promoter, an epoxy resin, and a curing agent for the epoxy resin that has at least two amino groups that are primary and/or secondary amino groups.

THERMOSETTING POWDER COATING MATERIAL, COATING FILM USING THE COATING MATERIAL, AND COATED BODY COMPRISING THE COATING FILM
20210292596 · 2021-09-23 ·

There is provided a thermosetting powder coating material capable of forming a cured product having excellent workability at coating and high plasticity as well as heat resistance, resulting in heat resistance and crack resistance at bending processing. (A) denotes a bisphenol type epoxy resin having epoxy equivalent weight of 600 to 800 g/eq (not including 800 g/eq), (B) a rubber-modified epoxy resin, (C) a bisphenol type phenyl resin curing agent (D) a compound for activating (C), (D1) an imidazole compound and (D2) an amine-epoxy adduct type compound. The thermosetting powder coating material is composed of a finely pulverized composition. The composition comprises (A), (C) and (D) but does not comprise (B). (D) comprises (D1) and (D2), and a weight ratio of (D2) with respect to (D1) is 1.0 or more and 3.7 or less when (D1) is 1.

STRUCTURAL ADHESIVE COMPOSITIONS

Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.

Amine for low-emission epoxy resin compositions

The use of an amine of formula (I) as a component of a hardener for epoxy resins, hardeners for epoxy resins containing the amine of formula (I), and resultant epoxy resin compositions which can particularly be used as low-emission room-temperature-curing epoxy-resin coatings with high hardness and surface quality. The amine of formula (I) is low-odour and a very successful diluent for epoxy resin compositions. It is particularly obtained by reductive alkylation from 1,2-ethylenediamine or 1,2-propylenediamine and an aldehyde or ketone.

Electrodeposition coating composition and electrodeposition coating method

It is an object of the present invention is to provide an electrodeposition coating composition and an electrodeposition coating method that enable the formation of a cured electrodeposition coating film that develops excellent throwing power and exhibits a good appearance. An electrodeposition coating composition of the present invention comprising: at least one compound (A) selected from the group consisting of a zinc compound (A-1) and a bismuth compound (A-2); an aminated resin (B); and a curing agent (C), wherein a milligram equivalent (MEQ (A)) of an acid per 100 g of a resin solid content in the composition is 27 or more; a coulombic efficiency of the composition is 30 mg/C or less; a film resistance of a 15-μm-thick uncured electrodeposition coating film formed using the composition is 400 kΩ.Math.cm.sup.2 or more; and a coating film viscosity of an electrodeposition coating film obtained from the composition is 3000 Pa.Math.s or less at 50° C.

ONE COMPONENT THERMOSETTING EPOXY RESIN COMPOSITIONS
20210163665 · 2021-06-03 · ·

A one-component thermosetting epoxy resin includes compositions that are particularly suitable for the bonding of substrates having different coefficients of thermal expansion, especially in the shell construction of modes of transport or white goods. The one-component thermosetting epoxy resin composition includes a) at least one epoxy resin A having an average of more than one epoxy group per molecule; b) at least one 2,4-diamino-1,3,5-triazine GU containing, in the 6 position, —an alkyl radical having 1 to 20 carbon atoms, in which one hydrogen atom in the α position has been replaced by a 2,4-diamino-1,3,5-triazin-6-yl radical, a cycloalkyl radical having 5 to 12 carbon atoms or -an aryl radical having 6 to 12 carbon atoms; and c) at least one toughness improver D, which is a terminally blocked polyurethane polymer D1.

METHODS FOR MANUFACTURING A POUCH-TYPE BATTERY CELL HAVING POLYMERIC CONFORMAL EDGE COATINGS
20210151720 · 2021-05-20 ·

Methods for manufacturing a pouch-type battery cell include disposing one or more electrode pairs between a first aluminum pouch layer and a second aluminum pouch layer, sealing the first pouch layer and the second pouch layer to form a peripheral seal joining the first pouch layer and the second pouch layer to form a pouch with an outer edge encasing the anode and the cathode, applying a photocatalytic polymer coating precursor to the outer edge of the pouch, and photo-curing the photocatalytic polymer coating precursor to form a conformal edge coating. The photocatalytic polymer coating precursor includes one or more photo-initiators, one or more acrylates, and one or more polyamines. The polyamines can include tertiary amines including α-CH functional groups, diamines represented by the formula H2N—R—NH2, wherein R represents saturated and unsaturated aliphatic moieties, and N,N′-(2,2-dimethylpropylidene) hexamethylenediamine. The photo-initiators can include Diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide, 2,2-Dimethoxy-2-phenylacetophenone, and p-tert-butylphenyl 1-(2,3)-epoxy)propyl ether.