摘要:
A composition useful in the manufacture of cable comprising: (i) a crosslinkable thermoplastic resin; (ii) a metal hydrate flame retardant compound; (iii) an organic peroxide crosslinking compound, which decomposes at a temperature of at least about 140°C, but below the decomposition temperature of the polymer; and (iv) an unsaturated silicone fluid.
摘要:
A process for producing a 1,3-diol, e.g., 1,3-propanediol, and/or a 3-hydroxyaldehyde, e.g., 3-hydroxypropionaldehyde is disclosed which comprises contacting a combination of an epoxide, carbon monoxide and hydrogen in the presence of a rhodium-containing catalyst composition effective to promote the hydroformylation of the epoxide at conditions effective to form at least one of a 1,3-diol and a 3-hydroxyaldehyde. The rhodium-containing catalyst composition comprises an anionic rhodium-containing complex. A promoter component is preferably provided to enhance at least one of the rate and selectivity of the epoxide hydroformylation reaction. Rhodium-containing compositions and a processes for producing rhodium-containing compositions are also disclosed.
摘要:
A vanadium catalyst composition comprising: (i) the reaction product of a vanadium compound and an electron donor, which is a liquid, organic Lewis base in which the vanadium compound is soluble; (ii) a hydrocarbyl aluminum cocatalyst; and (iii) a promoter having the following formula: C₃(X) a (F) b (H) c wherein X is chlorine, bromine, or iodine, and each X can be alike or different a = an integer from 6 to 8 b = an integer from 0 to 2 c = an integer from 0 to 2 a + b + c = 8
摘要翻译:一种钒催化剂组合物,它包含:(ⅰ)钒化合物和电子给体的反应产物,它是钒化合物可溶于其中的液体有机路易斯碱; (ii)烃基铝助催化剂; 和(ⅲ)具有下式的助催化剂:C 3(X)a(F)b(H)c其中X是氯,溴或碘,每个X可以相同或不同,a = 6至8的整数 b = 0至2的整数c = 0至2的整数a + b + c = 8
摘要:
The present invention relates to olefin polymers stabilized with polysiloxanes containing sterically hindered heterocyclic moieties, said polysiloxanes being represented by the general formula M* v D x D* y T z Q w M* v .
摘要:
Resin compositions from selected unsaturated polyester resin and shrinkage control materials containing single and multifunctional monomers produce fiber reinforced composites with superior properties.
摘要:
Ethylene oxide (EO) adducts of di- ard tri-functional starters, such as, trimethylolpropane and glycerine, provide unexpected improvements in the "wet compression set" properties of high resilience (HR) urethane foams. Heretofore, wet set improvements have been achieved through the use of EO adducts of tetrols because of the high degree of crosslink density which these materials impart to a urethane polymeric composition. One commercial wet set additive, which is an EO adduct of pentaerythritol and diglycerine, is an effective wet set improver. Surprisingly, EO adducts of di- and tri-functional starters provide improvements in foam wet set properties, which are comparable to those obtained with such commercial wet set additive. Specifically, EO adducts of glycerine in the 500 to 10,000 molecular weight range yield foam wet set improvements equal to those of such commercial wet set additive at as low as 20 percent of the use level on an equivalent weight basis. Moreover, the EO adducts of glycerine yield foams having improved elongation properties and improved processing (stability) characteristics as compared to those observed with such commercial wet set additives. An EO adduct of glycerine having a number average MW of 1,000 is particularly useful in the invention.
摘要:
This invention relates to the use of calcium sulfate as a catalyst in the preparation of alkoxylation products, i.e., condensation reaction products of alkylene oxides and organic compounds having at least one active hydrogen, that have beneficial, narrow molecular weight ranges.
摘要:
This invention relates to modified Group IIIB metal-containing bimetallic or polymetallic catalysts and the use thereof in the preparation of alkoxylation products, i.e., condensation reaction products of alkylene oxides and organic compounds having at least one active hydrogen. In another aspect of this invention, processes are provided for preparing the modified Group IIIB metal-containing bimetallic or polymetallic catalysts for alkoxylation using a Group IIIB metal or a Group IIIB metal-containing compound as sources for the catalytically-active group IIIB metal. In a further aspect of this invention, processes are provided for preparing alkoxylation products that have beneficial, narrow molecular weight ranges using the modified Group IIIB metal-containing bimetallic or polymetallic catalysts.
摘要:
This invention relates to modified calcium-containing bimetallic or polymetallic catalysts and the use thereof in the preparation of alkoxylation products, i.e., condensation reaction products of alkylene oxides and organic compounds having at least one active hydrogen. In another aspect of this invention, processes are provided for preparing modified calcium-containing bimetallic or polymetallic catalysts for alkoxylation using calcium metal or a calcium-containing compound as sources for the catalytically-active calcium. In a further aspect of this invention, processes are provided for preparing alkoxylation products that have beneficial, narrow molecular weight ranges using the modified calcium-containing bimetallic or polymetallic catalysts.
摘要:
A method for recovering a transition metal such as rhodium from a polar or non-polar liquid by contacting said transition metal-containing liquid with an ion-exchange resin having bonded ionically thereto an organophosphorus ligand; the transition metal can be eluted from the bed using a liquid containing a sufficient concentration of organophosphorus ligand.