| Patent Number |
Title Of Patent |
Date Issued |
| 4269729 |
Microencapsulation process and resulting microcapsules |
May 26, 1981 |
| Microcapsules having walls formed from polyvinyl alcohol are prepared by dispersing a substantially water insoluble nuclear material in an aqueous solution of a polyvinyl alcohol polymer, which solution has a cloud point, phase separating and depositing a concentrated aqueous solution of |
| 4269713 |
Ethylene-vinyl alcohol copolymer membrane and a method for producing the same |
May 26, 1981 |
| There is described an ethylene-vinyl alcohol copolymer membrane comprising at least a skin layer on its surface and a porous layer supporting the skin layer. The porous layer, when the membrane is observed in the dry state with an electron microscope, contains vacuoles or voids, which |
| 4269682 |
Reference electrode of insulated gate field effect transistor |
May 26, 1981 |
| A reference electrode of an insulated gate field effect transistor having the surface of the gate region thereof coated with a hydrophobic organic polymer membrane. Since this reference electrode is much smaller in size than conventional reference electrodes, an integrated measurement sy |
| 4259303 |
Method of and system for treating waste anesthetic gas |
March 31, 1981 |
| The present invention provides a method of treating a waste anesthetic gas by contacting the laughing gas contained in the waste anesthetic gas with a catalyst comprising one or more metal oxides selected from the group consisting of ferric oxide, cobalt oxide, cupric oxide, chromium oxi |
| 4259117 |
Dental filling material |
March 31, 1981 |
| A dental filling agent is provided, which contains a phosphoric or phosphonic acid ester compound containing at least one polymerizable functional group and either a group of the formula ##STR1## or a group of the formula ##STR2## or a high molecular weight compound obtainabl |
| 4259075 |
Method of filling a tooth cavity |
March 31, 1981 |
| A tooth cavity is filled by applying to the walls of the tooth cavity a lining composition comprising a phosphoric or phosphonic acid ester compound containing at least one radical polymizerable vinyl group and at least one ##STR1## group, wherein said lining composition contains |
| 4254182 |
Polyester synthetic fiber containing particulate material and a method for producing an irregula |
March 3, 1981 |
| A polyester fiber having an irregularly uneven random surface, having nonuniform recesses and projections forming said surface satisfying the requirement 0.2 micron<X<0.7 micron where X is the planar distance from the deepest point of a recess to the deepest point of another recess |
| 4251643 |
Absorbents with improved water absorbing power |
February 17, 1981 |
| Absorbent materials for aqueous fluids, which absorb fluid rapidly and swell uniformly, comprise modified polyvinyl alcohol polymers obtained by reacting in an anhydrous condition a polyvinyl alcohol polymer with a cyclic acid anhydride and causing partial crosslinking of said polymer. |
| 4251567 |
Process for producing a fibrous milk protein product |
February 17, 1981 |
| A fibrous milk protein product having a high tensile elongation (115 to 380%) and an excellent stability to hot water cooking (tolerant to treatment in hot water of 135.degree. C. for 4 minutes) which is produced by forming the starting milk protein into a fibrous composition and then |
| 4248736 |
Fibrous adsorbent for hemoperfusion |
February 3, 1981 |
| A hemoperfusion adsorbent is provided comprising a woven or knitted fibrous carbon adsorbent material having at least one coating thereon of a hydrophilic polymer. The adsorbent carbon fabric is preferably derived from a novolak-type phenolic resin. The hydrophilic polymer will prefe |
| 4238419 |
Hydroformylation of olefinic compounds |
December 9, 1980 |
| Rhodium catalyzed hydroformylation of olefinic compounds is essentially effected in the presence of a secondary phosphine oxide of the general formula (I) in an amount of at least one mole per gram atom of rhodium, which supresses the thermal degradation of the rhodium catalyst in the |
| 4231877 |
Blood dialyzer |
November 4, 1980 |
| The invention relates to a blood dialyzing apparatus comprising at least one bundle of semi-permeable hollow filaments and a cylindrical housing positioning said bundle of filaments and having a large length to inside diameter ratio of 7 to 10. |
| 4224252 |
Production of pinacolone |
September 23, 1980 |
| Disclosed are improved procedures for preparing pinacolone from compounds of general formula (I) ##STR1## wherein, either adjacent two of A, B, C and D form a single bond between them and the remaining two are hydrogen atoms, or both A and D are hydrogen atoms and one of B and C |
| 4222963 |
Substituted propargyl alcohols, allylic alcohols and unsaturated ketones, and methods for the pr |
September 16, 1980 |
| Novel substituted propargyl alcohols of the formula: ##STR1## novel allylic alcohols of the formula: ##STR2## and; .delta.,.epsilon.-unsaturated ketones of the formula: ##STR3## are provided. In the above formulas, R represents a group of the formula: ##STR4## wherein |
| 4222780 |
Adhesive composition with improved bonding affinity for hard human tissues |
September 16, 1980 |
| An adhesive composition is provided for hard human tissues which contains 0.1 to 10 weight percent as phosphorus of a phosphinic acid compound having the ##STR1## structure. This adhesive composition provides an intimate bond with hard human tissues such as tooth, bone, etc. and |
| 4220543 |
Ethylene-vinyl alcohol membranes having improved properties and a method of producing the same |
September 2, 1980 |
| A membrane made of a composition containing essentially two kinds of ethylene-vinyl alcohol copolymers with different ethylene unit contents and the membrane has such a microstructure that there are at least one active layer and a porous layer thereunder, the porous layer comprises m |
| 4218349 |
Rubber composition |
August 19, 1980 |
| A rubber composition with improved processability and capable of affording a vulcanizate with improved properties including improved adhesion to a metal surface is disclosed. The composition comprises a modified liquid polyisoprene rubber and a natural rubber. The modified liquid polyiso |
| 4218298 |
Selective chemical sensitive FET transducer |
August 19, 1980 |
| A selective chemical sensitive field-effect transistor device for use in detection and measurement of chemical properties of substances to which the device is exposed is disclosed. The chemical sensitive FET device comprises a semiconductor substrate, at least one pair of spaced apart |
| 4216251 |
Method of producing a leather-like sheet material having a high-quality feeling |
August 5, 1980 |
| A leather-like sheet material bearing a remarkable resemblance to high-quality leathers of natural origin, especially in respect of flatness, bending crimp, grain and feeling, is produced by providing a substrate consisting of a fibrous base material and a porous coating layer with a |
| 4215230 |
Production of ionones and irones by thermal rearrangement of propargylic alcohols |
July 29, 1980 |
| Ionones and irones are produced by thermal rearrangement of novel propargylic alcohols, as follows: ##STR1## wherein R.sup.1 is a lower alkyl group, R.sup.2 is hydrogen or methyl and the dotted lines in the product formula reflect the existence of a double bond at either one or t |
| 4215077 |
Hydroformylation of olefins |
July 29, 1980 |
| Hydroformylation of olefins is effected in an organic solvent in the presence of a rhodium complex and a trisubstituted phosphine to give the corresponding aldehydes. Addition of a diphosphinoalkane of the general formula ##STR1## wherein, in the formula, A.sup.1 and A.sup.2 are |
| 4214909 |
Aquatic antifouling method |
July 29, 1980 |
| Method for controlling fouling to structures caused by aquatic fouling organisms such as barnacles, slime, sea moss, algae, etc. which comprises applying to said structures sesquiterpene alcohols such as farnesol, nerolidol, and dehydronerolidol, and the organic carboxylic acid esters |
| 4214111 |
Method of producing olefin oligomers and hydrogenation products thereof |
July 22, 1980 |
| A method of producing liquid hydrocarbons useful e.g. as lubricants or base oils for cosmetics is disclosed. The method comprises copolymerizing in the presence of an aluminum halide catalyst (i) at least one alpha-olefin having a terminal vinyl group and containing 6 to 14 carbon atoms, |
| 4206257 |
Napped sheet material bearing the characteristics of a suede-leather and method of producing the |
June 3, 1980 |
| A suede-like sheet material closely resembling natural leathers in feel and nap is produced by temporarily fixing a fibrous mat consisting of "oceano-insular" composite fibers, impregnating said fibrous mat with elastomer (A), smoothing the surface, impregnating the resulting mat with |
| 4190730 |
Preparation of 1,1,1-trihalogeno-4-methyl-3-penten-2-ol |
February 26, 1980 |
| A 1,1,1-trihalogeno-4-methyl-3-penten-2-ol is prepared by thermally isomerizing 1,1,1-trihalogeno-4-methyl-4-penten-2-ol. The isomerization reaction may be catalyzed by an acid or a transition metal of Group 6B, 7B or 8 of the Periodic Table of Elements, or a compound thereof. The 1, |
| 4190572 |
Method of producing a leather-like sheet with a delicate appearance and a deluxe hand |
February 26, 1980 |
| A method of producing a leather-like sheet having a deluxe feeling is provided comprising preparing and fully curing a leather-like sheet comprising a porous substrate consisting of a porous layer of elastomer and/or a porous layer of fibrous material and a nonporous coating layer of |
| 4190411 |
Centrifugal potting apparatus |
February 26, 1980 |
| A centrifugal potting apparatus has one or more rotators for holding housings filled with hollow semi-permeable filaments. Potting agent containers with radially-directed outlets are mounted on the rotators. Tubing connects the container outlets to potting case inlets at the ends of |
| 4188117 |
Method and apparatus for detecting leaks in hollow fiber membrane modules |
February 12, 1980 |
| Leaks from a hollow fiber membrane module comprising a housing having one or more hollow fiber bundles positioned therein with at least one end of each bundle being sealed by a cementing layer includes the step of applying a pressurized gas to the external surfaces of the hollow fibers. |
| 4181635 |
Pressure sensitive adhesive compositions |
January 1, 1980 |
| A pressure-sensitive adhesive composition having excellent tackiness and improved thermal resistance comprises (A) a low molecular weight polyisoprene, which may be obtained by polymerizing isoprene monomer with the aid of a lithium-type catalyst, said polyisoprene having a cis-1,4 c |
| 4181228 |
Apparatus for conveying cops and bobbins for directly connecting ring frame with winder |
January 1, 1980 |
| This invention relates to an apparatus for conveying cops and bobbins for directly connecting a ring frame with a winder wherein one operation to feed those cops which are doffed onto the transport-bands on both the right and left sides of the ring frame to the subsequent process from on |
| 4179579 |
Substituted propargyl alcohols, allylic alcohols and unsaturated ketones, and methods for the pr |
December 18, 1979 |
| Novel substituted propargyl alcohols of the formula: ##STR1## novel allylic alcohols of the formula: ##STR2## .delta.,.epsilon.-unsaturated ketones of the formula: ##STR3## are provided. In the above formulas, R represents a group of the formula: ##STR4## wherein X.su |
| 4176070 |
Semi-permeable membranes of regenerated cuprammonium cellulose and method for heat sterilization |
November 27, 1979 |
| Semi-permeable membranes of regenerated cellulose are subjected to wet-heat sterilization at a temperature of 105.degree. to 140.degree. C. During the treatment, the membranes are maintained in contact with an aqueous medium such as water or physiological saline. For the dialysis of body |
| 4172930 |
Sizes for textile fibers |
October 30, 1979 |
| A size for textile fiber which comprises a modified polyvinyl alcohol type resin obtainable by the alkali saponification of a copolymer comprising a vinyl ester and an ethylenically unsaturated dicarboxylic acid substantially free from the monoester, diester and anhydride as essential |
| 4171283 |
Hemoperfusion adsorbents |
October 16, 1979 |
| A hemoperfusion adsorbent is provided comprising an adsorbent material containing at least one coating thereon of a hydrophilic polymer prepared by the polymerization of at least one monomeric acrylate or methacrylate with a copolymerizable monomer containing an epoxy moiety therein.In a |
| 4165392 |
Process for producing fibrous high-protein food |
August 21, 1979 |
| A process for producing a meat-simulating, fibrous high-protein food from a starting milk material such as a milk, a skim milk, a casein or the like, which comprises the steps of (1) converting the starting milk material into a fibrous composition by a known method such as gelling the st |
| 4148781 |
Flexible building sheet materials |
April 10, 1979 |
| A flexible building sheet product is prepared by dry molding a slurry comprising predominantly at least one binder component selected from the group consisting of thermoplastic resin emulsions and aqueous solutions of water-soluble polymers, said solutions containing cross-linking agents |
| 4134837 |
Ethylene-vinyl alcohol copolymer membranes having improved permeability characteristics and a me |
January 16, 1979 |
| Ethylene-vinyl alcohol copolymer membranes characterized by constituent particles having an average diameter within the range of from 100 to 10,000 Angstrom units, determined under an electron microscope for the dry membrane, bonded to each other, wherein the membrane is substantially fr |
| 4122291 |
Method for the production of alken-2-ol-1 or of alken-2-ol-1 and alkanol-1 |
October 24, 1978 |
| Production of an alken-2-ol-1, or of an alken-2-ol-1 and an alkanol-1 from the corresponding alken-3-ol-1 is described. The above compound or compounds can be produced with good selectivity by converting an alken-3-ol-1 to the boric acid ester, and, then, contacting the ester with a |
| 4122132 |
Dispersion stabilizer |
October 24, 1978 |
| A comb-like copolymer comprising an alkenyl aromatic polymer by way of trunk and a saturated polyester by way of branch is incorporated in an unsaturated polyester resin to which an alkenyl aromatic polymer is added for reducing the cure shrinkage of the resin so as to impart dispersion |
| 4122119 |
Process for the production of unsaturated ketones |
October 24, 1978 |
| There is disclosed a process for preparing unsaturated ketones especially terpenoid ketones, by subjecting a substituted propargyl alcohol of formula (II) ##STR1## wherein R is a group containing 1 or 2 substituted or unsubstituted alkyl- or alkylene units containing 4 carbon ato |
| 4117247 |
Preparation of 1,1,1-trihalogeno-4-methyl-3-penten-2-ol |
September 26, 1978 |
| A 1,1,1-trihalogeno-4-methyl-3-penten-2-ol is prepared by thermally isomerizing 1,1,1-trihalogeno-4-methyl-4-penten-2-ol. The isomerization reaction may be catalyzed by an acid or a transition metal of Group 6B, 7B or 8 of the Periodic Table of Elements, or a compound thereof. The 1, |
| 4113968 |
Process for preparation of substituted cyclopropane carboxylic acids and esters thereof and inte |
September 12, 1978 |
| When 1-halogeno-3-alkene-2-ol is reacted with an ortho-carboxylic ester and/or a ketene acetal, a .gamma.-halogeno-.delta.-unsaturated-carboxylic ester is obtained as a main reaction product. When this intermediate is treated with a basic substance, a substituted cyclopropane-carboxylic |
| 4088620 |
Melamine resin flame-retardant fibers |
May 9, 1978 |
| Flame-retardant and infusible fibers having a water-swelling degree lower than 2.0, obtained by spinning precondensates of melamine-aldehyde resins and thereafter curing the resulting fibers. |
| 4088616 |
Method of production of a sheet material having a superior durability and a sponge structure |
May 9, 1978 |
| In accordance with the present invention, it has now been found that the coagulation property of polyurethane elastomers can be considerably improved without spoiling any desirable chemical property of the original elastomer, if polyurethane elastomers which are different only in N%, are |
| 4079036 |
Flame-retardant fiber |
March 14, 1978 |
| Shaped articles comprised of PVA and PVC having improved flame-retardancy and resistance to discoloration resulting from heat treatment are provided by the incorporation therein of calcined stannic acid, characterized by a specific crystal size. |
| 4073733 |
PVA membrane and method for preparing the same |
February 14, 1978 |
| A polyvinyl alcohol semi-permeable membrane is prepared which has micropores with an average diameter of 0.02 to 2 microns as defined by the interpore partition walls having thicknesses in the range of 50 to 5000 A and which is characterized by substantial cross-sectional uniformity. The |
| 4072773 |
Porous sheet material and its production |
February 7, 1978 |
| A porous sheet material made of a polymeric material comprising mainly a polyurethane elastomer, which comprises a base layer of vertically penetrating vesicular structure and a surface layer of microporous structure integrally provided on at least one of the surfaces of the said bas |
| 4071454 |
Hollow polyvinyl alcohol fibers |
January 31, 1978 |
| A dialysis membrane comprising a plurality of polyvinyl alcohol hollow fibers of substantially homogeneous structure having a degree of orientation (.pi.) in the range of 60% .ltoreq. .pi. .ltoreq. 98% and a degree of swelling (.zeta.) in the range of 1.05 .ltoreq. .pi. .ltoreq. 1.80 |
| 4069261 |
Process for the production of polyhydric alcohols |
January 17, 1978 |
| Polyhydric alcohols can be produced in high selectivity from substituted 1,3-dioxanes containing at least one hydroxyalkyl group by heating, in the presence of water, said 1,3-dioxane or mixtures thereof in contact with boric acid, boric acid anhydride or a boron-containing compound capa |
| 4053546 |
Method of making a leather-like sheet material by coagulating two polymers |
October 11, 1977 |
| Method of making a leather-like sheet material having a low bounce impact elasticity, which comprises: (a) mixing (i) a solvent solution of a polymer (A) consisting mainly of an elastomer and (ii) a dispersion in a liquid of a polymer (B) consisting mainly of an elastomer, thereby ob |
