摘要:
Heat curable epoxy resin compositions comprising a resin-forming polyepoxide and an amine curing agent are fortified (i. e. given increased strength and modulus but without consequent brittleness) by incorporating into the resin mix prior to curing up to 40 parts by weight per hundred parts of resin of a fortifying agent which is the reaction product of an aromatic amine, e. g. aniline, with a mono- or di-epoxide, the fortifier thus obtained optionally further being reacted with an isocyanate or nitrile prior to incorporation into the resin mix.
摘要:
A novel epoxy compound represented by the following formula and a method for producing the same are provided: wherein R 1 and R 2 are members selected from the group consisting of hydrogen, aliphatic hydrocarbon group having 1 to 4 carbon atoms, alicyclic hydrocarbon group having 3 to 6 carbon atoms, aromatic hydrocarbon group having 6 to 10 carbon atoms, halogen atom, ether group, ester group, acyl group and nitro group, n is an integer of 1 to 4, and m is an integer of 1 to 5. A high-performance cured epoxy resin that is high in strength, elastic modulus, adhesiveness, toughness, heat resistance, weather resistance, solvent resistance, impact resistance, and so on can be obtained by curing the epoxy compound of the present invention with a curing agent.
摘要:
The invention relates to an epichlorohydrin amine polymer in which the ratio of amine units to epichlorohydrin units ranges between 0.8:1.2 and 1.0:1.0, dimethylaminopropylamine and benzylamine being preferably used as amine units and/or ammonium units. The inventive epichlorohydrin amine polymer is used for treating the surface of semifinished leather products and textile materials, for example.
摘要:
This invention provides a novel phosphatized polymeric product which is formed by: (a) forming an amine-extended resinous composition having unreacted epoxy groups by mixing, under free-radical initiated polymerization conditions, a polymerizable, ethylenically unsaturated monomeric component and a polyepoxide component; and (b) phosphatizing at least a portion of the unreacted epoxy groups of the resinous composition. The present invention also provides novel coating compositions containing the aforedescribed polymeric product. While these novel coating compositions have a number of different uses, they are particularly useful for application to metal substrates such as can end stock since they result in a cured film which has excellent performance properties such as flexibility and extensibility, adhesion, resistance to boiling liquid pack tests and boiling water taste test results.
摘要:
The invention relates to hardenable resins which are self-dispersible in water and to a method for producing them. The inventive epoxide resins are special compounds which can be obtained by reacting the following: (a) 1.0 equivalent of epoxide resin, (b) 0.01-1.0 equivalent of a polyfunctional phenol and (c) 0.005-0.5 equivalent of an amine-epoxide adduct, the amine-epoxide adduct (c) representing a reaction product of an aromatic polyepoxide with a polyoxyalkyleneamine. The invention is characterised in that the compounds used to produce the amine-epoxide adduct (c), i.e. the aromatic polyepoxide and the polyoxyalkyleneamine, are used according to an equivalent ratio of 1:0.10 to 1:0.28.
摘要:
The invention relates to a process for the preparation of an advanced resin by reaction of a compound having on average more than one epoxy group per molecule and a compound having on average one or more than one nucleophile bearing active hydrogen such as aromatic hydroxyl group, carboxyl group or amino group, per molecule, in the presence of a catalyst at elevated temperature, the process comprising (1) mixing the epoxy compound, the aromatic hydroxyl compound or the carboxyl compound and the catalyst, and (2) transferring the mixture, as a feedstream to a surface which is at least intermittently moving with respect to the feedstream. In a preferred embodiment an endless conveyer belt with additional heating means and optional cooling means are used.
摘要:
Imidazolidinone compounds of formula (I) where R is a C3-C5 alkylene group, R?1 and R2¿ are independently H or C(=O)R4, R3 is an aliphatic hydrocarbon group optionally substituted with one or more alkoxy groups or interrupted by one or more ether oxygen atoms, and R4 is a hydrocarbon group substituted with an active hydrogen functional group are useful as chain extending monomers providing pendant imidazolidinone functionality to polyurethane/urea and epoxy polymers. The subject imidazolidinone compounds may also be incorporated into polyester/polyamide polyols or reacted to prepare radically polymerizable ethylenically unsaturated monomer and prepolymer compounds used in the synthesis of emulsion polymers.
摘要:
A self-dispersing curable epoxy composition is prepared upon contacting: (a) 1.0 reactive equivalents of an epoxy resin, (b) from about 0.65 to 0.95 reactive equivalents of a polyhydric phenol, and (c) between 0.005 and 0.5 reactive equivalents of an amine-epoxy adduct, wherein the amine-epoxy adduct is formed upon contacting 1.0 equivalents of an aliphatic polyepoxide and between 0.3 and 0.9 reactive equivalents of a polyoxyalkyleneamine. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.
摘要:
Compounds having formula (II) where R1 is H or an alkyl group of up to 17 carbon atoms, R2 is alkylene of up to 20 carbon atoms, optionally interrupted with one or more ether oxygen atoms, and A is a residue of an active hydrogen reactive compound, provided that when R1 is H, A is a residue of an active hydrogen reactive compound which is an unsaturated isocyanate, an unsaturated anhydride, or an active hydrogen reactive compound which does not contain ethylenic unsaturation are useful for incorporating ureido and optionally nitrile functionality into polymers and as precursors to amino compounds prepared by reduction of the nitrile group thereof. Compounds having formula (III) where R1 is H or a C¿1?-C17 alkyl group and R?2 is C¿1-C20 alkylene optionally interrupted with one or more ether oxygen atoms, A and B are different groups and one of A and B is H or a group having ethylenic unsaturation and the other of A and B is a residue of an active hydrogen reactive compound, provided that said residue of said active hydrogen reactive compound does not include an active hydrogen group or ethylenic unsaturation are also disclosed. The disclosed compounds have use as chain extending or terminating monomers for polyurethane dispersions and as wet adhesion monomers in dispersions of free radically polymerized polymers of unsaturated monomers. The disclosed compounds may take the form of monomers, prepolymer and polymer compounds.