摘要:
The precipitation of iron and aluminum from their solutions in strong acids, eg. 18% HCl and 25% H.sub.2 SO.sub.4, is accomplished by adding to the acid solution certain organic aminophosphonic acids in which at least 50% of the amine hydrogens have been substituted with methylenephosphonic acid groups. Particularly preferred compounds are the methylenephosphonic acid derivatives of ammonia and polyalkylenepolyaminepoly(methylenephosphonic acids). The completely phosphonomethylated derivatives are most preferred.
摘要翻译:铁和铝从强酸中的溶液中沉淀出来, 18%HCl和25%H 2 SO 4是通过向酸性溶液中加入某些有机氨基膦酸,其中至少50%的胺氢被亚甲基膦酸基取代。 特别优选的化合物是氨和聚亚烷基多氨基聚(亚甲基膦酸)的亚甲基膦酸衍生物。 完全膦酰基甲基化的衍生物是最优选的。
摘要:
A curable epoxy resin composite composition including a reinforcing material and an epoxy resin composition, and a process for preparing a composite from such composition; wherein a combination of at least one alkanolamine and at least one styrenated phenol are present in the epoxy resin composition in a sufficient amount to increase the rate of reaction of the at least one epoxy resin and the at least one alkanolamine curing agent while maintaining the thermal and mechanical properties of the composite upon curing of the epoxy resin composition.
摘要:
A curable composition including (a) at least one cyclic diamine, (b) at least one non-heterocyclic amine that has a pKa value of approximately 9.5 to about 12 at 25° C. for the most basic amine group in the non-heterocyclic amine molecule, (c) at least one epoxy resin, and (d) at least one alkylated phenol; (i) wherein the equivalents of the amine hydrogens from the cyclic diamine compared to the total amine hydrogens from both the cyclic diamine and the non-heterocyclic amine in the composition are greater than about 5%; (ii) wherein the ratio of the equivalents of the total amine hydrogens in the composition to the equivalents of the total epoxies in the composition is greater than or equal to about 1; and (iii) wherein the alkylated phenol is in an amount greater than about 10 wt % of the curable composition.
摘要:
Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain α-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain α,ω-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an α,ω-hydroxy acid or α,ω-hydroxy ester, which may be (trans)esterified with a polyol to form an α,ωpolyester polyol. Alternatively, the reduced chain unsaturated acid or ester may be hydroformylated with reductive amination to produce an α,ω-amino acid or α,ω-amino ester, which may be (trans)esterified to form an α,ω-polyester polyamine.
摘要:
A coating composition with a solids content of at least about 65% by weight comprises a polyanhydride having more than one non-cyclic anhydride moiety, a co-reactant resin such as a glycidyl (meth)acrylate-containing polymer and a latent catalyst wherein the equivalent ratio of epoxy to anhydride is from about 0.8:1 to 1.3:1.
摘要:
A polyanhydride having a molecular weight of no more than about 2000 is useful in a coating composition with a coreactant resin such as an epoxy resin and comprises:(a) a polyvalent organic moiety;(b) a plurality of ester linkages bonded to the polyvalent organic moiety;(c) divalent organic moieties bonded to the ester linkages; and(d) non-cyclic anhydride moleties bonded to the divalent organic moleties.
摘要:
A curable composition including (a) at least one cyclic diamine, (b) at least one non-heterocyclic amine that has a pKa value of approximately 9.5 to about 12 at 25° C. for the most basic amine group in the non-heterocyclic amine molecule, (c) at least one epoxy resin, and (d) at least one alkylated phenol; (i) wherein the equivalents of the amine hydrogens from the cyclic diamine compared to the total amine hydrogens from both the cyclic diamine and the non-heterocyclic amine in the composition are greater than about 5%; (ii) wherein the ratio of the equivalents of the total amine hydrogens in the composition to the equivalents of the total epoxies in the composition is greater than or equal to about 1; and (iii) wherein the alkylated phenol is in an amount greater than about 10 wt % of the curable composition.
摘要:
Embodiments of the present disclosure provide a curable composition having an epoxy resin component having an epoxide equivalent weight of 75 grams/equivalent to 210 grams/equivalent, an amine component having a hydrogen equivalent weight of 18 grams/equivalent to 70 grants/equivalent, and an acrylate component having an acrylate equivalent weight of 85 grams/equivalent to 160 grams/equivalent, wherein the acrylate component is 1 part per hundred parts epoxy resin to less than 5 parts per hundred parts epoxy resin.
摘要:
Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain α-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain α,ω-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an α,ω-hydroxy acid or α,ω-hydroxy ester, which may be (trans)esterified with a polyol to form an α,ω-polyester polyol. Alternatively, the reduced chain unsaturated acid or ester may be hydroformylated with reductive amination to produce an α,ω-amino acid or α,ω-amino ester, which may be (trans)esterified to form an α,ω-polyester polyamine.
摘要:
Epichlorohydrin is produced from acetone by (1) chlorinating acetone to form monochloroacetone; (2) disproportionating the monochloroacetone in the presence of a platinum catalyst, a strong acid and preferably a chloride source (for example, added as a salt or from hydrolysis of monochloroacetone) and some water to produce acetone and 1,3-dichloroacetone; (3) hydrogenating the 1,3-dichloroacetone in the presence of a catalyst to produce 1,3-dichlorohydrin; and (4) cyclizing the 1,3-dichlorohydrin with a base to produce epichlorohydrin.