Patent
Products of acid anhydrides and polyamines used as latent hardeners for epoxy resins
TLDR
In this paper, the reaction products of APPROXIMATELY EQUIMOLECULAR PROPORTIONS of ACID ANHYDRIDE, SUCH AS PHTHALIC ANHY DRIDE, and a POLYAMINE, as well as DIETHYLENETRIAMINE are LATENE HARDENERS for EPOXY RESINS.Abstract:
THE REACTION PRODUCTS OF APPROXIMATELY EQUIMOLECULAR PROPORTIONS OF AN ACID ANHYDRIDE, SUCH AS PHTHALIC ANHYDRIDE, AND A POLYAMINE, SUCH AS DIETHYLENETRIAMINE, ARE LATENE HARDENERS FOR EPOXY RESINS HAVING MORE THAN ONE 1,2-EPOXY GROUPS PER MOLECULE AND, WHEN COMBINED WITH AN EPOXY RESIN, PROVIDE SYSTEMS WHICH ARE STABLE FOR LONG PERIODS WHEN STORES AT AMBIENT OR MODERATELY ELEVATED TEMPERATURES WHILE PROVIDING ON CURING FOR RELATIVELY SHORT PERIODS AT ELEVATED TEMPERATURES, ON THE ORDER OF 100150*C., HARDENED PRODUCTS OF GOOD PROPERTIES.read more
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Patent
Heat curable one package polyurethane resin composition
Rizk Sidky D,Hsieh Harry W S +1 more
TL;DR: A heat curable one package polyurethane resin composition adaptable to use for automotive seam sealing, particularly under high solids acrylic enamel paints, was proposed in this paper.
Patent
Co-curing agents for epoxy resins
TL;DR: In this paper, a N-substituted piperazine or homopiperazine adduct with a polyepoxide is used as a co-curing agent in epoxy resin systems containing a polyoxide and a known curing agent such as dicyandiamide, a carboxylic acid anhydride, or a dihydrazide.
Patent
Cathodic electrocoat having a carbamate functional resin
TL;DR: In this article, the authors provided a cathodic electrocoat coating composition comprising an aqueous dispersion of a polymer and a compound having a plurality of functional groups that are reactive with said carbamate groups, wherein the repeat units A of polymer having a pendant cationic salting group are salted with an acid.
Patent
Resin-sealed semiconductor device
TL;DR: In this article, a semiconductor device sealed in a resin composition, wherein the resin composition contains the prescribed percentages of inorganic fillers having extremely small amounts of impurities, epoxy resin having an epoxy equivalent of 250 or less and a softening point of 120° C.
Patent
Cathodic electrocoat having a carbamate functional resin and a carbamate functional reactive additive
December Timothy,Ohrbom Walter +1 more
TL;DR: In this paper, a cathodic electrocoat coating composition with a primary carbamate group and at least one cationic salting site was proposed. But the composition was limited to a polymeric compound having a molecular weight of from 131 to 2000 and comprising at most one primary carbamate group and one alkyl group.