| Patent Number |
Title Of Patent |
Date Issued |
| 4299935 |
Process for bulk polymerization |
November 10, 1981 |
| The bulk polymerization of monomers which produce polymer insoluble in the monomers, in which the polymerization is carried out in an autoclave mounted on a horizontal axis and provided with stirring means formed of at least two half-frames arranged symmetrically of the axis of the autoc |
| 4277585 |
Vertical autoclave for bulk polymerization of vinyl chloride |
July 7, 1981 |
| A vertical autoclave suitable for the bulk polymerization of vinyl chloride based polymers and copolymers embodying agitation means comprising at least one agitator (A) in the form of helicoidal ribbon about a rotatable shaft in the upper portion of the autoclave and an agitator (B) havi |
| 4198376 |
Vertical autoclave for bulk polymerization of vinyl chloride based polymers and copolymers |
April 15, 1980 |
| A vertical autoclave suitable for the bulk polymerization of vinyl chloride based polymers and copolymers embodying agitation means comprising at least one agitator (A) in the form of helicoidal ribbon about a rotatable shaft in the upper portion of the autoclave and an agitator (B) havi |
| 4124699 |
Alumina-based bodies with large pores, produced by agglomeration |
November 7, 1978 |
| The invention is addressed to very light alumina-based agglomerated bodies, the porosity of which comprises pores of large dimensions. These bodies are produced from alumina gels which are dehydrated in hot gas streams so that the amount of water remaining, which can be measured by calci |
| 4121978 |
Method of separating chlorinated aliphatic hydrocarbons from mixtures thereof, by extractive dis |
October 24, 1978 |
| A method for the partial or total separation by extractive distillation of C.sub.1 to C.sub.3 clorinated aliphatic hydrocarbons from mixtures of at least two such chlorinated hydrocarbons. The mixture of the chlorinated hydrocarbons is distilled in the presence of one or more other organ |
| 4119645 |
Method of preparing phthalic anhydride |
October 10, 1978 |
| A method for preparing phthalic anhydride by oxidation of o-xylene with air in which the reaction is self-sufficient in terms of energy and involves only low investment costs while providing a pure product in high yield in which the oxidation reaction is carried out in short tubes for mi |
| 4110284 |
Polyurethane latexes from sulfonate prepolymer, aqueous chain extension process, and coated supp |
August 29, 1978 |
| Process of preparing anionic polyurethane latexes without the addition of a foreign emulsifying surface active agent comprising rendering the basic polyester or polyether constituent of the latex intrinsically emulsifiable or dispersible in water by incorporating an anionic functional gr |
| 4104457 |
Bulk polymerization of vinyl chloride to control grain size |
August 1, 1978 |
| Polymers and copolymers of vinyl chloride having a narrow grain size distribution and a large average mean diameter and a process for the preparation of same in which the polymerization of vinyl chloride is carried out in the presence of a prepolymer composition obtained by polymeriz |
| 4096150 |
Process for manufacture of tertiary amines |
June 20, 1978 |
| Substituted amines are prepared with high selectivity by reacting olefin, hydrogen, CO and secondary amine in the presence of a coordination complex catalyst of a Group VIII metal and a ligand, the donor atom of which is oxygen, nitrogen or sulfur. |
| 4078018 |
Graft polymers and compositions of high impact strength |
March 7, 1978 |
| Graft polymers based upon butadiene, alkyl acrylate, methyl methacrylate and styrene, for the improvement of the impact strength of homo- or co-polymers of vinyl chloride. Use is made of a backbone polymer formed of a butadiene-alkyl acrylate copolymer which is agglomerated and grafted |
| 4061581 |
Trimethylolpropane esters useful as base lubricants for motor oils |
December 6, 1977 |
| A trimethylolpropane ester composition useful as lubricant base for motor-car engines is prepared by total esterification of trimethylolpropane by means of a mixture of saturated aliphatic carboxylic acids comprising 6-33% by mole of dicarboxylic acids having 4-19 carbon atoms and 94 |
| 4058574 |
Process for the oxychlorination of hydrocarbons with ammonium chloride |
November 15, 1977 |
| The invention is addressed to the manufacture of chlorinated hydrocarbons by catalytic oxychlorination, in which the chlorine is derived, at least in part, from ammonium chloride, and in which a suitable catalyst comprises a support formed of silica and magnesium with a catalytic active |
| 4057579 |
Adducts of olefins and trichloromethane phosphonic dichloride |
November 8, 1977 |
| Adducts of trichloromethane phosphonic dichloride and olefinically unsaturated compounds having the general formula ##STR1## WHEREIN Q designates: A. (C R"R'"--C R R').sub.n wherein R and R', which may be the same or different, each designatesH, alkyl or flourine;R" designates H, alkyl, |
| 4057578 |
Adducts of olefins and trichloromethane phosphonic dichloride |
November 8, 1977 |
| Adducts of trichloromethane phosphonic dichloride and olefinically unsaturated compounds having the general ##STR1## WHEREIN Q designates: A. (C R"R'" -- C R R').sub.n wherein R and R', which may be the same or different, each designatesH, alkyl or flourine;R" designates H, alkyl, aryl, |
| 4049691 |
Aromatic amino silanes and their polymers |
September 20, 1977 |
| Aromatic amino silanes having 1, 2 and 3 hydrolyzable groups and polymers thereof in which corresponding nitrophenols are hydrogenated in the presence of a catalyst at a temperature below 30.degree. C in which compounds having 2 to 3 hydrolyzable groups produce polymers suitable for |
| 4042483 |
Electrolysis cell electrode and method of preparation |
August 16, 1977 |
| An improved electrode for an electrolysis cell, and the process for producing the same, are provided whereby there is deposited on a film-forming or barrier metal substrate, a compound of perovskite structure whereby the compound of perovskite structure is suspended in a solution of |
| 4036935 |
Cobalt oxide-based catalytic substances for the oxidation of ammonia |
July 19, 1977 |
| The invention concerns catalytic substances for the oxidation of ammonia, for the production of nitric acid, comprising cobalt oxide as the main component. Such substances, besides cobalt oxide, also contain additives formed of aluminum oxide and possibly oxides of thorium, cerium, zinc |
| 4022812 |
Fire resistive plasticizer and method |
May 10, 1977 |
| A fire resistive primary plasticizer having 15-70% chlorine, 1-8% sulphur, with the remainder formed principally of carbon, hydrogen and oxygen prepared by the reaction of a substantially straight chain paraffin by the reactions of sulphochlorination, chlorination and condensation with o |
| 4018880 |
Method of purifying hydrogen chloride gas |
April 19, 1977 |
| The invention concerns a method of purifying hydrogen chloride gas containing small quantities of chlorine. The purifying method comprises passing impure hydrogen chloride over carbon, at a temperature from 30.degree. to 200.degree. C, in the presence of at least one olefin, possibly |
| 4010307 |
Coating of paper, cardboard and the like and composition |
March 1, 1977 |
| A paper or cardboard coating composition comprising an aqueous dispersion containing binder and pigment in which 5-30 percent by weight of the pigment are particles dimensioned within the range of 0.05-0.3 microns of a non-film forming synthetic polymer and in which 70-95 percent by weig |
| 3996273 |
Manufacture of phosgene from chlorine obtained by oxidation of hydrochloric gas and fixed on rea |
December 7, 1976 |
| The manufacture of phosgene from carbon monoxide and chlorine obtained by oxidation of hydrochloric acid gas in which the chlorine is fixed in the form of a copper chloride on an exchange mass formed of a granular support of silica gel having a specific surface of 10 m.sup.2 /g and a por |
| 3994833 |
Oxidation catalyst and process for its preparation |
November 30, 1976 |
| The object of the invention is a catalyst for oxidizing organic compounds. The catalyst is characterized by the fact that the active material consists of molybdenum oxide deposited on anatase type titanium dioxide. The catalyst can be used for the oxidation of organic compounds in order |
| 3993734 |
Process for the manufacture of alkali metal polyphosphates |
November 23, 1976 |
| A process for the manufacture of alkali metal polyphosphates having a predetermined crystalline form, in which a mixture of alkali metal orthophosphates having a molar ratio of alkali metal oxide to phosphoric anhydride between 1 and 2 is first granulated, the resulting granules are |
| 3980613 |
Method of manufacturing electrolysis cell diaphragms |
September 14, 1976 |
| A uniform, porous, homogeneous diaphragm for use in electrolysis cells is provided by bringing together a homogeneous, stable suspension of asbestos fibers in water and a fluorinated polymeric resin latex with a pore-forming agent in the presence of a sulfonated anionic surfactant, the |
| 3980545 |
Bipolar electrodes with incorporated frames |
September 14, 1976 |
| Bipolar electrodes are provided for electrolysis cells of the filter-press type with incorporated cathode and/or anode frames. These frames are integrated in the bimetallic base plate of the electrode serving as reference plane, perpendicularity with respect to said plane being assured |
| 3979502 |
Method of eliminating chloroacetylenes present in hydrogen chloride gas |
September 7, 1976 |
| A method of eliminating chloroacetylenes present in small quantities in hydrogen chloride gas. The method comprises passing hydrogen chloride contaminated with chloroacetylenes over active carbon at a temperature from 50.degree. to 250.degree.C. The method of the invention can plainly |
| 3978262 |
Method of sizing textile fibers using water-soluble sulfonated polyesters and products so made |
August 31, 1976 |
| Water soluble sulfonated polyesters, made by polycondensation of an aromatic diacid or its anhydride or diester, an unsaturated aliphatic diacid or its anhydride or diester and a saturated glycol and sulfonating, are applied to textile fibers in sufficient amounts to act as sizing ag |
| 3978004 |
Catalysts for the treatment of gases containing various derivatives of sulphur |
August 31, 1976 |
| Catalysts for Claus reaction treatment of industrial gases containing hydrogen sulphide and sulphur dioxide in which the catalyst has a specific surface area of at least 80 sq.m./g and is composed of activated alumina and a compound of lanthanum, a lanthanide series metal of atomic numbe |
| 3974227 |
Acid extracted-alkalized/carbon catalyst support with coordination complex catalyst and method o |
August 10, 1976 |
| A catalyst for hydrogenation, hydroformylation, olefin oxidation and similar reactions is prepared by treating activated carbon first with a volatile acid and then with a basic substance to provide a suitable support for the catalyst, and then adsorbing onto such support a coordinati |
| 3969424 |
Process for oxychlorination of hydrocarbons |
July 13, 1976 |
| A catalyst support composed of silica and magnesia prepared by calcining particles of a silica hydrogel containing magnesium cations and an anion containing chlorine and/or bromine. The supports of this invention can be impregnated with catalytically active components to produce catalyst |
| 3969261 |
Porous substances having ion exchange properties |
July 13, 1976 |
| An ion exchange substance formed of a porous mineral support having a specific surface area greater than 10 sq.m/g and an organo silicon compound containing at least one amine group in an organic group attached to the silicon atom grafted onto the porous mineral support via the silic |
| 3968179 |
Selective preparation of 1,2-dichloroethane |
July 6, 1976 |
| A process for the continuous chlorination of ethylene in the liquid phase in the absence of light and in the presence of 1,2-dichloroethane and dissolved ferric chloride wherein the reaction is carried out in a homogeneous reaction zone in which the reaction medium contains dissolved |
| 3965158 |
Process for preparing halophenol sulfonic compounds and halophenols from halobenzene sulfonates |
June 22, 1976 |
| Process for the selective ortho substitution of a halobenzene sulfonic acid compound with a hydroxyl group or a group convertible to same to prepare the corresponding halophenol sulfonic acid compound which process comprises reacting a halobenzene sulfonic acid compound having at least |
| 3962138 |
Cobalt-oxide-based catalytic substances for the oxidation of ammonia |
June 8, 1976 |
| The invention concerns catalytic substances for the oxidation of ammonia, for the production of nitric acid, comprising cobalt oxide as the main component. Such substances, besides cobalt oxide, also contain additives formed of aluminum oxide and possibly oxides of thorium, cerium, zinc |
| 3960772 |
Agglomerated alumina-based spherical grains |
June 1, 1976 |
| The invention concerns alumina-based spherically shaped grains produced from pastes of moistened particles. These grains are produced by subjecting the pastes, in the form of grains of any shape whatever, to the action of mechanical vibrations of frequencies within the range of from a |
| 3959347 |
Manufacture of alkyl esters of polycarboxylic acids |
May 25, 1976 |
| A method of making alkyl esters of polycarboxylic acids by reacting an alkaline salt of the acid and at least one halo-alkane so that the rate of conversion is limited to 35- 85% whereby no partial esters are formed. |
| 3953381 |
Composition containing diamide and halocarbon for treatment of surfaces |
April 27, 1976 |
| A homogeneous liquid composition for use in the treatment of surfaces to remove water and other materials in which the composition is formulated of 90 to 99.95% by weight of a solvent, at least 50% by weight of which is trichloro-1,1,2-trifluoro-1,2,2-ethane and 0.05% to 10% by weight of |
| 3952022 |
Method of condensing phthalic anhydride |
April 20, 1976 |
| A method of condensing and recovering phthalic anhydride in dilute concentration in gases discharged from reactors. The method comprises condensing the anhydride on a solid granular carrier moving in a pneumatic conveyor, separating the condensate from its carrier and cooling the said |
| 3948843 |
Additives for oils |
April 6, 1976 |
| Additives for oils prepared by polymerizing by an anionic process at least one vinyl aromatic compound and at least one conjugated diene in the presence of a solvent, followed by hydrogenation of the formed copolymer in the presence of the solvent, in which the solvent is a support oil |
| 3947508 |
Removal of HCl by distilling a vinyl chloride feed in solution with an alcohol |
March 30, 1976 |
| Process for removing hydrochloric acid and other impurities which are contained in vinyl chloride monomer, by treatment in a distillation zone, comprising the addition to crude vinyl chloride, in the course of distillation thereof, of at least one alcohol selected from the group of C |
| 3947476 |
Process for the continuous preparation of propylene oxide |
March 30, 1976 |
| A liquid phase continuous process for producing propylene oxide comprising oxidizing propylene with a molecular oxygen-containing gas in a solvent which is (a) water-insoluble and (b) as immiscible with organic carboxylic acids as possible; condensing the gaseous reaction products; addin |
| 3936480 |
Additives for improving the dispersing properties of lubricating oil |
February 3, 1976 |
| New lubricating oil additives are provided comprising the reaction product of a hydroxy compound, such as an alcohol or hydroxyaromatic compound, with an aliphatic chain substituted-carboxylic anhydride, acid, chloride, or ester, which aliphatic chain substituent is substantially saturat |
| 3935286 |
Process for reducing the amount of trichloroethylene in 1,2-dichloroethane |
January 27, 1976 |
| A process for converting trichloroethylene present in 1,2-dichloroethane by chlorination of the trichloroethylene in the liquid phase in the absence of light and in the presence of a Lewis acid catalyst wherein chlorine, 1,2-dichloroethane containing trichloroethylene and ethylene are |
| 3933776 |
Bulk polymerization of vinyl chloride |
January 20, 1976 |
| A process for preparing polymers and copolymers containing vinyl chloride by bulk polymerization which includes feeding to a reaction zone of a vessel maintained at polymerization temperature (t.sub.1) a solution (A) comprising monomeric material to be polymerized and at least one po |
| 3933630 |
Purification of waste water containing phthalic esters |
January 20, 1976 |
| A process for the treatment of waste waters from the preparation of phthalic esters of alcohols to reduce the BOD and recover alcohols comprising treating the waste water with a strong acid and then extracting the acidified waste water with an alcohol, preferably the same as the alco |
| 3933124 |
Artificial habitats |
January 20, 1976 |
| Artificial habitats for rearing aquatic fauna and the like. The habitats comprise a plurality of structures deposited on the bed of a body of water. Each structure comprises longitudinal members of thermoplastic material characterized by a helicoidal shape and a density from 1.2 to 2.0 |
| 3932595 |
Process of manufacturing carbon bisulfide |
January 13, 1976 |
| Carbon disulfide is made by contacting hydrocarbons with sulfur vapor and sulfur dioxide at temperatures between 500.degree. - 1000.degree.C. for 0.3 - 10 seconds in the absence of a catalyst. The total sulfur introduced as sulfur vapor and sulfur dioxide is between 2.1 and 3.5 atoms per |
| 3931290 |
Preparation of carboxylic acid alkyl esters |
January 6, 1976 |
| Carboxylic acid alkyl esters are prepared by reacting an halo-alkane with an aqueous solution of an alkali metal salt of a carboxylic acid, using ammonia, a primary amine, a secondary amine, a heavy tertiary amine or a heavy quaternary ammonium salt as the catalyst. |
