| Patent Number |
Title Of Patent |
Date Issued |
| 4268650 |
Sulphonated polyaryletherketones |
May 19, 1981 |
| A polyaryletherketone polymer which is a hydrophilic sulphonated polymer derived by controllably sulphonating a polymer having the repeat unit of formula ##STR1## alone or in conjunction with the repeat unit of formula ##STR2## the latter units, if present, remaining substant |
| 4268635 |
Aromatic polymers |
May 19, 1981 |
| Block copolymers are prepared by heating at above 250.degree. C. (i) a halophenate, (ii) dihalobenzenoid compound plus bisphenate, and/or (iii) a polymer formed from (i) or (ii) having at least one phenate end group, said halophenate and/or dihalobenzenoid compound containing SO.sub.2 |
| 4268583 |
Antistatic films |
May 19, 1981 |
| The invention relates to an antistatic film having a polypropylene substrate and a polymeric heat-sealable surface layer on which is present an antistatic composition comprising (a) a quaternary ammonium compound, such as choline chloride, (b) an organic polyol containing at least two |
| 4268547 |
Coating process |
May 19, 1981 |
| Improved application characteristics of spray-applied coatings, particularly for automobile bodies, are obtained when the composition applied comprises (A) a film-forming polyester or alkyd resin, (B) a volatile liquid solvent for the resin and (C) polymer microparticles which are st |
| 4268514 |
1'-Substituted xanthene-9-spiro-4'-piperidine derivatives and analgesic compositions thereof |
May 19, 1981 |
| The disclosure relates to xanthene derivatives which possess analgesic activity, to processes for the manufacture of said derivatives and to pharmaceutical compositions containing them. Typical of the xanthene derivatives disclosed is 6-chloro-4-hydroxy-1'-methylxanthene-9-spiro-4'-p |
| 4268510 |
1,3-Benzoxazine trichloromethyl derivatives, compositions and use |
May 19, 1981 |
| The invention relates to novel heterocyclic trichloromethyl derivatives, particularly 2-trichloromethyl-substituted quinazoline, benzo[d]-[1,3]-oxazine and benzo[e]-[1,3]-oxazine derivatives, for example 1,2-dihydro-2-trichloromethylquinazolin-4-one. The compounds of the invention ar |
| 4268472 |
Valve |
May 19, 1981 |
| A valve especially suitable as a relatively cheaply manufactured means for controlling liquids in laboratory equipment, comprises a body having a valve seat with a flow passage passing through the seat, and a spindle located within the body; the spindle comprising a mandrel having an |
| 4268432 |
Polyamide compositions |
May 19, 1981 |
| A polyamide masterbatch composition containing at least 10% by weight of a polyamide with a melting point of 230.degree. C. or below and at least 60% by weight of fire-retardant materials comprising halogenated organic compounds and optionally a synergist for the halogenated compounds. |
| 4268407 |
Cleaning composition |
May 19, 1981 |
| A composition for cleaning printed circuit boards contains 92 to 95 weight percent 1,1,2-trichloro-1,2,2-trifluoroethane, 5 to 7 weight percent methanol and 0.05 to 1 weight percent methyl acetate. |
| 4267304 |
Aromatic copolyesters capable of forming an anisotropic melt |
May 12, 1981 |
| An aromatic copolyester capable of forming an anisotropic melt containing up to 75 mole % of recurring units of formula ##STR1## wherein R may be hydrogen, chlorine, bromine or alkyl groups containing from 1 to 4 carbon atoms. |
| 4267229 |
Decorative acrylic sheets and articles formed therefrom |
May 12, 1981 |
| A colored acrylic sheet having an attractive 3-dimensional depth of color resulting from the use of a mixture of pigments or a pigment and a dye wherein an inorganic pigment, distributed non-uniformly throughout the sheet and a colorant is distributed uniformly through the sheet, the |
| 4267215 |
Process for coating a web using reverse applicator roll |
May 12, 1981 |
| Process and apparatus for applying a flowable coating medium to a travelling web by a reverse applicator roll technique in which the peripheral velocity of the applicator roll (U) is maintained at less than 0.4 of the forward speed of the web, and the dynamic viscosity of the coating |
| 4267183 |
Tetrahydropyridine derivative |
May 12, 1981 |
| The invention concerns the novel amine 1-(2-chlorobenzyl)-1,2,3,6-tetrahydropyridine of the formula: ##STR1## and its pharmaceutically acceptable acid-addition salts, which have useful properties in inhibiting the aggregation of blood platelets, and are of application in the trea |
| 4266056 |
Phenyl uracils |
May 5, 1981 |
| Phenyl uracils, synthesis and intermediates therefor, and compositions for the control of pests, especially fungi and bacteria. |
| 4265406 |
Comminution process |
May 5, 1981 |
| A process is described for the comminution of a solid material in the presence of a saturated solution of the solid in a liquid in which the solid has a solubility greater than 1%, and also in the presence of an additive dissolved in the saturated solution which can at least partially |
| 4264567 |
Method for producing a hydrogen-containing gas |
April 28, 1981 |
| In a process for producing a hydrogen containing gas by reacting steam with a feedstock to give a gas at a temperature of at least 350.degree. C., generating high pressure steam by heat exchange with such a gas, letting down the steam in an expansion engine of the pass-out type and using |
| 4263458 |
Preparation of aromatic fluoro-compounds |
April 21, 1981 |
| 4,4'-difluoro-benzophenone is prepared from 4,4'-diamino-diphenylmethane by diazotization in anhydrous or concentrated aqueous hydrogen fluoride and decomposition of the diazonium fluoride thus produced in the presence of nitrous acid or nitrite as oxidizing agent. |
| 4263424 |
Anti-fungal and anti-bacterial polyurethanes |
April 21, 1981 |
| Polyurethane polymers having the general formula: ##STR1## wherein each Y is an --NH-- group, Z is an optionally substituted divalent hydrocarbon radical and n is an integer of at least 2; their preparation by reacting 2-bromo-2-nitropropane-1,3-diol and a diisocyanate Z(NCO).sub |
| 4263252 |
Method for producing an oriented tubular film |
April 21, 1981 |
| A method for coating an axially moving tubular form by depositing a coating medium on a surface of the form, and spreading the deposited medium around at least part of the surface in a direction transverse to the movement of the form. The technique is suitable for the deposition of a uni |
| 4263224 |
Acrylonitrile dimerization process |
April 21, 1981 |
| A process for the dimerization of acrylonitrile to predominantly straight-chain C.sub.6 dimers, in which the acrylonitrile is dissolved in an organic solvent capable of donating protons, the acrylonitrile and solvent being substantially dry, and the solution contacted with a catalyst |
| 4263206 |
Reactive dyestuffs containing chlorine or fluorine substituents and one or more 1,3-dicyanobenze |
April 21, 1981 |
| Dyestuffs are provided which contain one or more 1,3-dicyanobenzene radicals linked to the dyestuff at the 2-, 4- or 6-position, with halogen substituents in both of the remaining two of these positions and an electron-attracting substituent in the 5-position. These dyestuffs reactiv |
| 4263168 |
Olefine polymerization catalyst |
April 21, 1981 |
| A component of a polymerization catalyst is prepared by reacting an organo-magnesium halide with a solid, inorganic oxide, then reacting the product with a Lewis Base compound, particularly an ester and finally with titanium tetrachloride. After reacting the organo-magnesium halide with |
| 4262126 |
Guanidine derivatives of imidazoles and thiazoles |
April 14, 1981 |
| The invention relates to guanidine derivatives of imidazoles and thiazoles which are histamine H-2 antagonists and which inhibit the secretion of gastric acid, to methods for their manufacture, to pharmaceutical compositions containing them and to methods of using such guanidine deri |
| 4262109 |
New epoxy resin and use as build up suppressant coating in polymerization reactors and in vinyl |
April 14, 1981 |
| An epoxy resin, useful for coating the internal surface(s) of a reactor such as one used for vinyl halide, particularly vinyl chloride, polymerisation in aqueous dispersion for the purpose of suppressing build-up, is made by cross-linking (I) the uncross-linked polyether intermediate |
| 4261852 |
Liquid polyisocyanate compositions |
April 14, 1981 |
| Liquid polyisocyanate compositions comprising:(A) from 90 to 50% by weight of a reaction product of diphenylmethane diisocyanate and a polyoxyalkylene polyol having an average functionality of 2-3 comprising from 50-100% by weight of a polyoxypropylene diol or triol having a hydroxyl equ |
| 4260734 |
Modified fluidized bed |
April 7, 1981 |
| A process (and apparatus therefor) for carrying out thermally-initiated chemical reactions or physical changes by heating a particulate substrate in a fluidized bed having hotter zone(s) and cooler zone(s) between which the fluidized particles circulate, the dwell time in the hotter zone |
| 4260721 |
Modified fluidized bed |
April 7, 1981 |
| A process (and apparatus therefor) for carrying out thermally initiated chemical reactions or physical changes by heating a particulate substrate in a fluidized bed having hotter zone(s) and cooler zone(s) between which the fluidized particles circulate, the dwell time in the cooler zone |
| 4260632 |
Alkanolamine derivatives |
April 7, 1981 |
| Novel 1-heterocyclyloxy-or 1-aryloxy-3-amidoalkylamino-2-propanol derivatives, processes for their manufacture, pharmaceutical compositions containing them and methods of using them in the treatment of heart diseases. The compounds possess .beta.-adrenergic blocking activity. Represe |
| 4260510 |
Cleaning composition |
April 7, 1981 |
| A composition suitable for cleaning printed circuit boards consists of 89.5% to 96.9% 1,1,2-trichloro-1,2,2-trifluoroethane, 2.5% to 8% ethanol, 0.1% to 3% methyl acetate and preferably 0.01% to 0.5% nitromethane. |
| 4259496 |
Halogenation of pyridine compounds |
March 31, 1981 |
| Side-chain fluorination of 3-methylpyridine is carried out by reaction with hydrogen fluoride and chlorine in the liquid phase. The main products are 3-trifluoromethylpyridine, 3-chlorodifluoropyridine and 3-difluoromethylpyridine. |
| 4259263 |
Halogenated hydrocarbons and a method for their preparation |
March 31, 1981 |
| A halogenated hydrocarbon having the general formula: ##STR1## wherein Y represents fluorine, chlorine, bromine or --(CF.sub.2).sub.m W, R represents hydrogen or lower alkyl, R.sup.1 represents lower alkyl, X represents chlorine, bromine or iodine, W represents hydrogen, fluorine or |
| 4257977 |
2-Nitro-4'-aminodiphenylamine-2',4-disulfonic acid and process for its preparation |
March 24, 1981 |
| 2-Nitro-4'-aminodiphenylamine,2',4-disulphonic acid, a new intermediate for azo dyes, is prepared by the monosulphonation of 2-nitro-4'-aminodiphenylamine-4-sulphonic acid or 2-nitro-4'-acetylaminodiphenylamine-4-sulphonic acid. |
| 4257975 |
4-Halo-3,3-dimethyl-6,6,6-trihalohexanoate intermediates |
March 24, 1981 |
| A compound of the formula: ##STR1## wherein X and Y are independently selected from cyano and alkoxycarbonyl containing from 1 to 4 carbon atoms in the alkoxy group, and Q, R and Z are independently selected from chlorine and bromine provided that Q is always bromine when either |
| 4257944 |
Process for the manufacture of cyano azo dyes |
March 24, 1981 |
| Process for disperse azo dyes having a cyano radical ortho to the azo group by reacting the corresponding halogeno dye with a covalent non-metallic nitrile in the presence of a copper catalyst and an acid acceptor. Previous processes have used a metal cyanide as the cyanide source. The |
| 4257857 |
Liquid phase preparation of 2-chloro-5-trifluoromethylpyridine and 2-chloro-5-perchlorofluoromet |
March 24, 1981 |
| 2-Chloro-5-trifluoromethylpyridine or a 2-Chloro-5-perchlorofluoromethylpyridine is prepared by chlorination of 3-trifluoromethylpyridine or a 3-perchlorofluoromethylpyridine respectively in the liquid phase in the presence of ultra-violet radiation and/or in the presence of a free-r |
| 4257801 |
Cotton desiccation with phenoxyalkanoic acids |
March 24, 1981 |
| A method of dessicating growing cotton plants employing 2, 5-dichlorophenoxy propionic acid and derivatives thereof. |
| 4257437 |
Liquid flow control |
March 24, 1981 |
| A method and apparatus to control the flow of liquid through a valve, especially at very low levels down to about 0.5 ml/hour, by monitoring the liquid level in a column of liquid using a sensor, for example a photo-electric cell, which is moved along the column at a predetermined ra |
| 4257140 |
Painting device |
March 24, 1981 |
| A conventional roller-type paint applicator, having a head surfaced with a paint-retentive material, is modified for use with a thickened paint to produce a textured pattern on a substrate by a sleeve which fits over the existing head. The sleeve, optionally in conjunction with the exist |
| 4256988 |
Incandescent halogen lamp with protective envelope coating |
March 17, 1981 |
| The invention relates to electric incandescent lamps having a gas fill containing halogen. The internal surface of the lamp envelope and optionally also the exposed surface of internal components of the lamp are protected from attack by halogens including fluorine by a continuous imp |
| 4256863 |
Vinyl halide polymerization process, reactor therefor and coating product for use in process and |
March 17, 1981 |
| Build-up during vinyl halide, particularly vinyl chloride, polymerization is prevented by employing a polymerization process using a reactor having an adherent internal coating of a coating product derived from the admixture of at least polyethyleneimine; one or more of hydroquinone, |
| 4256605 |
Surfactant composition, and concentrate and emulsion including same |
March 17, 1981 |
| Compositions useful as surfactants in the emulsification of oils in aqueous media are obtained by blending two types of polyester which are the products of condensation of an alk(en)yl succinic anhydride with a polyalkylene glycol, the one type being derived from an anhydride in which |
| 4256551 |
Electrolytic process |
March 17, 1981 |
| A process for electrolysing at least a proportion of a liquid comprising an electrolyte which process comprises passing the liquid between electrodes, at least one of which is an anode and at least one of which is a cathode, the liquid being in a state of laminar flow substantially paral |
| 4256379 |
Electrochromic device |
March 17, 1981 |
| An electrochromic device in the form of a cell comprising a metal-sensitive compound having a thickness of 1 micrometer or less, preferable between 0.5 and 0.05 of a micrometer, is described in contact with a solid fast ion conductor as electrolyte. The fast ion conductor itself is in co |
| 4254122 |
Triazine derivatives |
March 3, 1981 |
| The invention concerns new analgesic 6-acylaminotetrahydro-1,3,5-triazine-2,4-dione derivatives of the formula: ##STR1## in which R.sup.1 is an optionally substituted phenyl, phenyl- (1-4C)alkyl, naphthyl, monocyclic or bicyclic heteroaromatic or (monocyclic or bicyclic heteroaro |
| 4254027 |
Disperse monoazo dyestuffs for coloring synthetic textile materials |
March 3, 1981 |
| The disperse monoazo dyestuffs of the formula: ##STR1## wherein T.sup.1 and T.sup.2 are each independently hydrogen or lower alkyl, Z is hydrogen, lower alkyl, or lower alkoxy, Y is hydrogen, lower alkyl, lower alkoxy, chlorine, bromine, --NHCOX.sup.1 or --NHSO.sub.2 X.sup.2, X.s |
| 4253949 |
Sewage treatment-flotation apparatus |
March 3, 1981 |
| Solids-liquid separation, wherein a solids-liquid mixture containing dissolved oxygen-containing gas is circulated around a circulatory system comprising a downcomer and a riser, part of the mixture in the riser being introduced into a flotation chamber in which the hydrostatic pressure |
| 4252851 |
Multiple-layer films |
February 24, 1981 |
| A multiple-layer film having a substrate layer of high density polyethylene or a propylene homo- or co-polymer, and, on at least one surface of the substrate, a heat-sealable layer of a propylene co-polymer containing from 80 to 95% of propylene, the balance being a C.sub.4 to C.sub.10 o |
| 4252718 |
Continuous azo coupling process |
February 24, 1981 |
| A process for the preparation of an aqueous slurry of a water-insoluble azo compound which comprises continuously mixing together, in a reaction zone from which the slurry is continuously removed, a first stream containing a diazonium compound resulting from the diazotization of a hetero |
| 4252670 |
Olefine polymerization catalyst |
February 24, 1981 |
| A component of a polymerization catalyst is prepared by reacting an organo-magnesium compound, or a complex with an organo-aluminium compound, with an halogenating agent such as silicon tetrachloride or hydrogen chloride, and then reacting the product with a Lewis Base compound, part |
| 4252628 |
Membrane cell |
February 24, 1981 |
| A monopolar filter press electrolytic cell suitable for use in the electrolysis of an aqueous alkali metal halide brine to produce (cell liquor, halogen and hydrogen, the cell comprising a plurality of flexible anode plates and flexible cathode plates and a cation perm-selective memb |
