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Kuraray Co., Ltd. Patents
Assignee:
Kuraray Co., Ltd.
Address:
Kurashiki, JP
No. of patents:
878
Patents:


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Patent Number Title Of Patent Date Issued
4046504 Process for preparation of colored suede sheet materials September 6, 1977
In a process for preparing suede sheet materials having desirable tactile characteristics and good coloring, fibers are colored with a dope dye before being formed into a fibrous mat. The mat is impregnated with a binder and subsequently treated to produce a sheet material having a n
4033933 Rubber compositions and methods for production thereof stabilized July 5, 1977
Synthetic diene rubber stock for the production of vulcanized articles can be improved with respect to thermal discoloration at relatively high temperature by mixing therewith a high molecular weight alkylene oxide compound. The high molecular weight alkylene oxide compound also is e
4028385 Process for preparing stereospecific farnesylacetic acid and ester thereof June 7, 1977
A process for preparing stereospecific farnesylacetic acid and ester thereof by rectifying a mixture of .DELTA..sup.4,8 -trans- and .DELTA..sup.4 -cis-.DELTA..sup.8 -trans-farnesylacetic acids or esters thereof or .DELTA..sup.4,8 -trans- and .DELTA..sup.4 -cis-.DELTA..sup.8 -trans-fa
4028161 Method of making sheet material June 7, 1977
A sheet material having leather-like grain, excellent scuffing and abrasion resistance and superior dyeability comprising in combination, a substrate, and intermediate layer of 0.05 to 2.5 mm thickness consisting of a finely napped porous polymer bonded to said substrate and an upper lay
4026960 2,7,10,15,18,23-Hexamethyltetra-cosane May 31, 1977
2,7,10,15,18,23-Hexamethyltetracosane is a novel compound. This compound is prepared [1] by hydrogenating 2,7,10,15,18,23-hexamethyltetracosa-1,6,18,23-tetraene-11,13-diyne-10,15-d iol [itself a novel compound] or 2,7,10,15,18,23-hexamethyltetracosa-11,13-diyne-10,15-diol, dehydrating
4025539 Process for preparing 2-substituted or unsubstituted geranyl acetic acids and esters thereof May 24, 1977
2-Substituted or unsubstituted geranyl actic acid esters represented by the general formula [I], ##STR1## wherein R.sub.1 represents a hydrogen atom or a hydrocarbon and R.sub.5 is the same as R.sub.2, R.sub.3 or R.sub.4 hereinafter defined, are prepared by reacting linalool (II)
4018954 Sheet material April 19, 1977
A sheet material having leather-like grain, excellent scuffing and abrasion resistance and superior dyeability comprising in combination, a substrate, an intermediate layer of 0.05 to 2.5 mm thickness consisting of a finely napped porous polymer bonded to said substrate and an upper laye
4011277 Preparation of squalane by hydrogenolysis March 8, 1977
Novel 2,6,10,15,19,23-hexamethyltetracosane-10,15-diol derivatives. Such derivatives are prepared by hydrogenation of 2,6,10,15,19,23-hexamethyltetracosa-11,13-diyne-10,15-diol derivatives and used as starting materials for preparing squalane.
4006193 Isomerization of the unsaturated alcohols February 1, 1977
Unsaturated alcohols represented by the general formulas (I) and (II) below ##STR1## wherein R is a substituted or unsubstituted hydrocarbon radical, R.sub.2 and R.sub.3 are hydrogen or lower alkyl groups, and R and R.sub.2 may be linked together are mutually isomerized in the presen
4003920 Method for producing maleic anhydride using a promoted tungsten, phosphorous oxide catalyst January 18, 1977
Maleic anhydride is obtained by oxidizing an unsaturated hydrocarbon having at least 4 carbon atoms in the presence of a catalyst comprising the oxides of tungsten and phosphorus, and at least one catalyst promoter selected from the groups consisting of a compound of a metallic element
3998585 Package dyeing method December 21, 1976
A batchwise packaging dyeing method is disclosed wherein a loose stock of fiber is charged into a basket carrier of a high temperature, high pressure package dyeing machine. The loose stock of fiber is charged in such a manner that the change rate (a) is 10% or less and is defined as
3996303 Organic halide December 7, 1976
An organic halide (1) having the general formula: ##STR1## wherein X is a halogen atom, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is a hydrogen atom, a hydrocarbon group or a halogenated hydrocarbon group, R.sup.1 may be a group having the formula: ##STR2## wherein R is an alipha
3987140 Method of preparing polyvinyl alcohol fibers having improved properties October 19, 1976
Disclosed is a method for preparing polyvinyl alcohol fibers which comprises spinning an aqueous solution of polyvinyl alcohol containing boric acid or a borate and from about 0.01-5 weight per cent based on said polyvinyl alcohol of an additive comprising an amino acid, an amine, sa
3986530 Cloth having antistatic properties October 19, 1976
A knitted or woven cloth having antistatic properties which is suitable for use in the preparation of filter bags and garments, which is characterized in that said cloth contains an electrically conductive thread composed of 10 to 90 weight % of electroless metal plated staple fibers, an
3984475 Process for the production of substituted ketones October 5, 1976
Process for producing substituted ketones from the reaction between organic halides and ketones having replaceable active hydrogen atoms on the carbon atom(s) alpha to the carbonyl group, in the presence of an alkali metal hydroxide unitilizing phosphonium salts as the catalyst, which sa
3983175 Process for the production of a substituted ketone September 28, 1976
A process for producing substituted ketones is disclosed comprising reacting an organic halide with a ketone which has a replaceable hydrogen atom on the carbon atom in the .alpha.-position to the carbonyl group, in the presence of an aqueous alkali metal hydroxide and at least one basic
3981930 Diacetylene diol derivatives and process for preparing the same September 21, 1976
Novel 2,6,10,15,19,23-hexamethyltetracosa-11,13-diin-10,15-diol derivatives. Such derivatives are prepared by oxydative coupling of 3,7,11-trimethyldodeca-1-in-3-ol derivatives or by ethynylation of 6,10-dimethylundecan-2-on derivatives with diacetylene and used as starting materials
3978100 Allenic esters, process for preparation thereof and process for rearrangement thereof August 31, 1976
Allenic esters of the formula: ##EQU1## (specific examples of R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are given) and a process for the preparation thereof which comprises reacting propargyl alcohol derivatives with 2-substituted ortho-acetic acid esters in the presence of an aci
3975451 Diols and process for preparation thereof August 17, 1976
An alkyne-10,15-diol is synthesized by coupling a 3-alkynol containing methyl groups by using as a catalyst a complex comprised of a halide of a metal of Group VII of the Periodic Table coordinated with an organic phosphorus compound.The so-obtained diol can be formed into squalane [
3975407 Method for producing maleic anhydride August 17, 1976
Maleic anhydride is obtained by oxidizing an unsaturated hydrocarbon having at least 4 carbon atoms in the presence of a catalyst consisting essentially of the oxides of phosphorus and tungsten, with small amounts of a catalyst promoter selected from compounds of alkali metals, alkaline
3971746 Synthetic polyisoprene rubber latex July 27, 1976
A synthetic polyisoprene rubber latex produced by emulsifying a solution of polyisoprene rubber in an organic solvent with water and removing the solvent from the resulting oil-in-water emulsion is significantly improved with respect to mechanical stability, wet gel strength and dry film
3967010 Process for the production of metal-plated staple fibers June 29, 1976
A process for the production of metal-plated staple fibers comprising providing staple fibers having an areal weight of 0.5 to 5.0 kg/m.sup.2, activating said fibers by conventional means, and spraying an electroless metal-plating solution onto the activated fibers at a space velocity of
3965076 Process for the production of modified cis-14,-polyisoprene June 22, 1976
A modified cis-1,4-polyisoprene rubber having enhanced green strength is produced by reacting said rubber with maleic anhydride in a solvent including an aliphatic hydrocarbon or an alicyclic hydrocarbon or an alicyclic hydrocarbon; the efficiency of the reaction of the maleic anhydr
3958057 Leather-like sheet material having excellent pearl-like tint and process for preparation thereof May 18, 1976
A leather-like sheet material is provided having a good pearl-like tint, said sheet material comprising a substrate comprising a fibrous mat and a porous coating layer of a polymer composed mainly of a polyurethane elastomer, a pearl layer having a thickness of 0.2 to 10.mu. and comp
3956222 Polyvinyl chloride paste compositions May 11, 1976
A polyvinyl chloride paste composition exhibits enhanced characteristics of fluidity, pot life, adhesiveness to substrate materials and workability, by incorporating therein a low molecular weight N-substituted acrylamide polymer comprising the acrylamide recurring unit having the struct
3947504 Separation and recovery of 3-methyl-3-butene-1-ol March 30, 1976
The 3-methyl-3-butene-1-ol contained in the oily mixture obtained in the production of isoprene by the reaction of isobutene and formaldehyde through the intermediate 4,4-dimethyl-1,3-dioxane can be isolated by adding boric acid to said mixture to form the boric acid ester of 3-methy
3932574 Process for preparing fibrous polyvinyl alcohol January 13, 1976
Shaped articles of polyvinyl alcohol are prepared by saponifying a liquid feed of polyvinyl ester as it cascades downwardly along the walls of a cylindrical reactor, and by taking-up from the reactor outlet the fibrous, shaped article of oriented, solid polyvinyl alcohol thus formed at a
3931088 Adhesive composition consisting of polyvinylalcohol solution or polyvinylacetate latex modified January 6, 1976
An adhesive composition is provided comprising (1) a member selected from the group consisting of an aqueous solution of polyvinylalcohol, an aqueous emulsion of vinyl acetate polymer and an aqueous latex of butadiene polymer and (2) a hydrophobic solution of an isocyanate compound o
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