569 results about "Iodine value" patented technology

A solid fuel candle which is highly adapted for use both in a container and also as a free-standing candle includes at least 85 percent hydrogenated soybean oil, approximately 0 to 4 percent synthetic wax composition, approximately 0 to 4 percent of a second hydrogenated vegetable or petroleum oil, approximately 0 to 10 percent fragrance or scent, and approximately 0 to 3 percent dye. The hydrogenated vegetable oil most preferably has an iodine value of approximately 50 and a melting point of approximately 125 degrees Fahrenheit, with a free fatty acid content of less than one-tenth of one percent. The synthetic wax composition is most preferably formed from alpha olefin monomers and oligomers under free radical conditions at relatively low pressures to yield a highly branched polymer wax having congealing and melting points lower than the starting alpha olefin material and a higher molecular weight.

Waxes prepared from hydrogenated plant oils, such as palm and soybean, are used as substitutes for petroleum derived waxes in hot-melt adhesive compositions. Unlike petroleum-derived or synthetic waxes, adhesive compositions comprising these waxes, which are obtained from naturally derived, renewable resources, achieve adhesion performance similar to conventional adhesives containing petroleum-derived waxes. The inventive waxes have a low iodine value (between 2-5), and melting points between approximately 120-165 degrees F. (Mettler Drop Point). These waxes comprise a triglyceride whose fatty acids are predominantly stearic acid (C₁₈). The naturally derived waxes are used as an alternative to petroleum and synthetically derived waxes in the manufacture of adhesives used to bond paper, wood, glass, plastic and metal in a variety of manufacturing operations.

A maximum hydrogen catalyst of diesel oil and its production are disclosed. The catalyst consists of amorphous silica aluminum, modified beta molecular sieve, aluminum oxide, VIB family and VIII family metals. Modified beta molecular sieve has high silicon and crystallinity, small crystal grain and acidity. It has good cyclanes selective loop open and alkane isomerization. Its advantages include higher heavy oil hydrogen crack activity and middle oil selectivity, better diesel oil absorption and lower filtering point, and it improves density, colloidal matter, iodine value and color.

A composition comprising at least one active chosen from at least one antiperspirant active and at least one deodorant active; a first gellant chosen from at least one fatty alcohol and at least one hydrocarbon of the formula C_nH_2n+2, wherein n is about 20 to about 100, and the hydrocarbon is at least 90% linear; at least one soybean oil having an iodine value of greater than 0 to about 20; and at least one silicone.

A low soot, low smoke candle that in one embodiment is made of renewable resource material such as plant source material. The candle may include plant source triglycerides and free fatty acids. The free fatty acids may be plant source or other source. Lower iodine value source materials provide highly saturated triglycerides and free fatty acids that in turn are low soot, low smoke. Iodine values of 10 or less down to 1 and 0.5 or less are taught. Use of agricultural “waste” material provides economically priced source material.

A partially hydrogenated fatty substance produced by partial hydrogenation of a substrate, such as vegetable, animal or marine oil, said partially hydrogenated substance having a low content of trans fatty acids. When the hydrogenation degree is below 30% the trans-fatty acid concentration can be expressed in the following way: trans<=0.3x(initial IV-IV) in %. of the total amount of fatty acids, wherein IV refers to iodine value. When the hydrogenation degree is between 30 and 70% the trans-fatty acid concentration can be expressed with: trans<=0.09xinitial IV in % of the total amount of fatty acids. The partial hydrogenation is performed by a process in which the substrate, hydrogen gas and a solvent are mixed, and the whole mixture is brought into a supercritical or near-critical state. This substantially homogeneous super-critical or near-critical solution is led over the catalyst, whereby the reaction products formed, i.e. the hydrogenated substrates, will also be a part of the substantially homogeneous super-critical or near-critical solution.

A process for the production of a composition comprising 1,3-dioleoyl-2-palmitoyl glyceride (OPO) comprises: providing one or more palm oil stearin fractions comprising tripalmitoyl glyceride and having an iodine value between about 18 and about 40; interesterifying the one or more palm oil stearin fractions to form a randomly interesterified palm oil stearin; subjecting the randomly interesterified palm oil stearin to enzymic transesterification with oleic acid or a non-glyceride ester thereof using an enzyme having selectivity for the 1- and 3- positions of a glyceride; and separating palmitic acid or palmitic non-glyceride esters from the product obtained in (iii) to form a composition comprising OPO glyceride.

The invention relates to a method for producing epoxy fatty acid methyl ester by using illegal cooking oil, which comprises: subjecting illegal cooking oil and methanol to esterification to obtain fatty acid methyl ester; purifying the fatty acid methyl ester by molecular distillation and performing epoxidation; and subjecting the obtained crude fatty acid methyl ester to three-stage rectification to obtain three models of epoxy fatty acid methyl ester. In the invention, illegal cooking oil is used as a raw material, and esterification is performed under normal pressure; as the reaction temperature is higher than the boiling point of methanol, the methanol is gasified immediately upon contact with fat; and the methanol is uniformly, quickly and fully contacted with the fat, so the esterification speed is further improved. When the method is used, the illegal cooking oil waste is utilized, cost is saved, environment is protected, energy consumption is low, process is simple, operation is safe and product quality is high. Therefore, the method is a resource-saving and environment-friendly production method. The epoxide number of the obtained No.1 epoxy fatty acid methyl ester is 4.0to 5.0, the plasticizing effect of the epoxy fatty acid methyl ester is desirable, the acid value is smaller than 1, the saponification of plasticized products is avoided, a flashing point is above 180 DEG C, an iodine value is smaller than 3, and the epoxy fatty acid methyl ester passed the verification of quality supervision and inspection departments and are approved to be qualified.

The invention discloses a preparation method of isopentenol polyoxyethylene ether. Isopentenol and ethylene oxide are served as raw materials; in the presence of catalyst, the raw materials react for 5-40 hours to obtain the isopentenol polyoxyethylene ether at the reaction temperature of 70-160 DEG C. The isopentenol polyoxyethylene ether has the molecular weight of 200-6000 and the iodine value of 3.9-123; the mass ratio of isopentenol to ethylene oxide in the raw materials is 1:0.0143-0.754; and the mass of the catalyst is 0.03-0.5% of total mass of the raw materials of isopentenol and ethylene oxide. The invention has simple and reasonable technology. Because the invention has the structural particularity of branched chain methyl, molecular space steric hindrance is increased, and the composite polycarboxylic acid high-efficiency water reducer has strong cement particle dispersibility holding capacity. Thus, the product has the advantages of low dosage, high water-reducing ratio, good strengthening effects, good durability and the like, does not erode reinforcing steel bars and protects environment.

The invention discloses an ultralow-mercury catalyst. The ultralow-mercury catalyst is prepared by taking the wooden activated carbon with carbon tetrachloride adsorption rate of being greater than or equal to 70 percent, an iodine value of being greater than or equal to 1,000 mg/g, moisture of being less than or equal to 5 percent, ash content of being less than or equal to 7 percent, mechanical strength of being greater than or equal to 95 percent, stacking density of being 360-420 g/l, particle size of being 2.5-4.0 mm and specific surface area of being 1,000-1,800 m<2>/g as a carrier and adsorbing mercury chloride and collaborative promoters of zinc chloride, barium chloride, potassium chloride and bismuth chloride at a central position, wherein the content of the mercury chloride is only 0.5-4.0 percent; but since the mercury chloride occupies the central position with stronger activated carbon adsorption capacity and reaction activity and the added active ingredient bismuth chloride and the adopted activated carbon are the wooden activated carbon with ultrahigh voidage, and meanwhile the collaborative promoters are also added to realize great collaborative effect of the activated carbon and the mercury chloride, the catalyst has longer service life and higher activity.

A crosslinkable rubber composition comprising 0.2 to 10 parts by weight of an aromatic secondary amine-based anti-aging agent and 0.5 to 20 parts by weight of a polyamine-based crosslinking agent with respect to 100 parts by weight of a nitrile rubber including an α,β-ethylenically unsaturated nitrile unit and an α,β-ethylenically unsaturated dicarboxylic acid monoester unit, and with iodine value of 120 or less. The present invention can provide a crosslinkable rubber composition, providable of a cross-linked rubber excellent in a variety of properties such as mechanical strength and small in compression set, and a cross-linked rubber obtained by cross-linking the rubber composition.

A method is disclosed for making a polyol comprising: fully-epoxidizing a partially hydrogenated vegetable oil to obtain a fully-epoxidized vegetable oil derivative having an iodine value less than 4 g I₂/100 gram, an EOC of from 4.0 to 5.7% and a Gardner color value of 2 or less; and then reacting the fully-epoxidized vegetable oil derivative with a ring opener to form a polyol having a hydroxyl number from 40 to 80 mg KOH/gram, a number average molecular weight of at least 1500 Daltons, a dynamic viscosity less than 10 pascal-seconds, and an EOC below 3.0 wt %.

The invention discloses a process for preparing furfural by using agricultural by-products of high and crude fiber plants. The process includes the steps of 1) conducting pretreatment of raw materials; 2) hydrolyzing pretreated raw materials in a hydrolyzing tank, and using an acid catalyst formed by mixing sulfuric acid and phosphoric acid during the hydrolytic process; 3) introducing high-temperature steam into the hydrolyzing tank, heating up the hydrolyzing tank, and conducting gap stripping for hydrolysis products of furfural; and 4) feeding gas stripped furfural to into a furfural phase splitter to obtain coarse furfural and furfural residues. According to the process, the acid catalyst combining the sulfuric acid and the phosphoric acid is used for hydrolyzing the raw materials, and the hydrolytic process is assisted by ultrasonic treatment simultaneously, so that the productivity of the furfural is improved, the residue amount of the sulfuric acid is a little, the production of sulfur oxides in the subsequent activating process of furfural residues is reduced, and the environmental pollution is reduced. Besides, the invention also provides a process for producing activated carbon adsorbents by using the furfural residues. The process includes the steps of drying the furfural residues, screening, roasting, hardening activating and steam curing, the obtained activated carbon specific surface is large, the iodine value is high and the adsorption capacity is high.

A cross-linkable nitrile rubber composition comprising a nitrile rubber (A1) including an α,β-ethylenically unsaturated nitrile monomer unit and having iodine value of 120 or less, silica (B1) having CaO value determined by X-ray fluorescence composition analysis of 0.5 wt % or more, and a crosslinking agent (C1). According to the present invention, a cross-linkable nitrile rubber composition, capable of giving a highly-saturated cross-linked nitrile rubber having excellent mechanical properties such as elongation and small compression set, and excellent in workability, and a cross-linked rubber obtained by crosslinking the rubber composition can be provided.