baber/WOPTO huggingface dataset:
Patent GB-1048798-A (GB)
Title: Process for the production of thiazolidinones
Inventor: LEY KURT
IPC: C07D277/18
Filed: 1965-10-29
Abstract: The invention comprises thiazolidinones of formula <FORM:1048798/C2/1> wherein R1 is an alkyl, aryl (which may be substituted by halogen atoms or nitro groups), aroyl, cycloalkyl, alkoxyaryl or aryl sulphonyl group or an alkyl or aryl group substituted by a radical of the formula <FORM:1048798/C2/2> R2 and R3 each represent an alkyl group or together form a hydrocarbon ring, and R4 and R3 each represent an alkyl group or together with the nitrogen atom, form a heterocyclic ring, optionally with further hetero atoms which may be substituted by a radical of the formula <FORM:1048798/C2/3> They are prepared by reacting an enamine whose b -carbon atom is substituted by alkyl radicals with sulphur or a sulphur producing compound such as trimethylamine polysulphides or xanthogenate polysulphides, and an isocyanate.  The reaction is suitably carried out in an inert solvent at temperatures in the range of 10 DEG  to 150 DEG  C.  Preferred enamines for the process are isobutenyl morpholine, isobutenyl piperidine, isobutenyl-N-methyl piperazine, isobutenyl-di-n-butyl amine and isobutenyl - di - n - isopropylamine, but others are listed.  Suitable isocyanates include aryl isocyanates or arylene diisocyanates which may be substituted by alkyl, alkoxy, carboxyalkyl, halogen or nitro groups, alkyl isocyanates, alkylene diisocyanates, cycloalkyl isocyanates, aryl sulphonyl and benzoyl isocyanates.  A large number of compounds of the invention are specified.
Patent GB-1035840-A (GB)
Title: Improvements in or relating to disc assemblies for paper pulp refining machines
IPC: B02C7/13
Filed: 1963-11-21
Abstract: 1, 35, 840. Disc mills; conical mills. G. M. G. PERDREAU. Nov. 21,1963 [April 30, 1963], No. 46040/63. Heading B2A. The co-operating rotor and stator discs 2, 1 of a pulp refiner each include tangentially radiating grooves of progressively increasing width the parts of each disc between the grooves being stepped in profile. As described, the stator disc 1 is secured in a cylindrical housing 3 and comprises grooves 4. The rotor disc 2 is held by a pin 6 on a revolving shaft 7, and comprises grooves 8 with serations 9 opposed to those of the stator, and the central part of its upper face is incurved. In operation, rotation of the rotor causes transverse alternation of the serations 5 and 9, and longitudinal alternation of the edges of the grooves 4 and 8. The discs may be arranged in successive pairs by superimposition on a vertical shaft, or juxtaposition on a horizontal shaft, to form a compound mill.
Patent GB-920602-A (GB)
Title: Man and machine readable label
IPC: G06K19/08
Filed: 1961-12-22
Abstract: 920,602. Automatic character reading. PERKIN-ELMER CORPORATION. Dec. 22, 1961 [Jan. 11, 1961], No. 46068/61. Class 106(1). Data is represented legibly and in a form capable of being sensed by machine on a sheet preprinted with an array of fluorescent marks over which the character is printed, the character being so shaped that one or more of the marks is left exposed to provide a coded representation of the character when they are sensed by ultraviolet light. The marks are invisible in ordinary light. As shown, the characters may be shaped to leave marks which, if valued 1, 2, 4, 8 from the top, represent the digit value in the binary scale. The characters are scanned from top to bottom and a number of denominations may be sensed at once, the values being entered into an accumu lator.
Patent GB-1398078-A (GB)
Title: Reducing gas
IPC: C01B3/36
Filed: 1971-10-05
Abstract: 1398078 Reducing gas IMPERIAL CHEMICAL INDUSTRIES Ltd 25 Sept 1972 [5 Oct 1971] 46228/71 Heading C5E Reducing gas is made by reforming a hydrocarbon feedstock with an excess of steam in an externally heated catalyst bed, cooling the resulting reforming gas, condensing and removing at least a portion of the unreacted steam, reheating the dried gas to 750-1100‹ C. and reacting carbon dioxide and unreacted steam contained in the gas with hydrocarbon contained therein or added thereto. Suitable hydrocarbon feedstocks are methane, refinery off-gas, ethane, propane, butane and naphthas boiling up to 350‹C. which should first be hydrodesulphurized with a bed of nickel molybdate-on-alumina catalyst and with a bed of zinc oxide-sulphide adsorbent. The reforming can be carried out with a refractory-supported nickelzirconia catalyst at up to 50 atmospheres using a steam-carbon ratio of 1À35 to 5. The dried reformer gas can be reheated (a) within a bed of catalyst effective for the reaction of hydrocarbon with steam or carbon dioxide, or (b) by partial combustion of hydrocarbons either present in the reformer gas or added as methane, naphtha or fuel oil. The reheated, dried reducing gas can be used in blast furnaces, shaft furnaces, pellet reduction furnaces and fluidized bed reduction furnaces to reduce metal ores, e.g. to iron; the used gas can be recycled to the reforming stage and the hot reduced ore charge can be used to reheat the dried reformer gas. As shown desulphurized natural gas is mixed at 14 with steam from a boiler 10 and the mixture is preheated at 16 by flue gases and passed through tubular catalyst beds 18 in a radiant furnace 20 fuelled by natural gas. The reformer gas, e.g. at 850‹ C., is cooled in an indirect gas/ gas heat exchanger 22, then in a boiler 24 and then in an air cooled condenser 26 (alternatively the final cooling at 26 can be by direct contact with water). The condensed water is separated from the reformer gas at 28 which is then reheated at 22, after the addition of more natural gas at 30, and finally in the tubular catalytic beds 32 to a final temperature of 950-1000‹ C.
Patent GB-1090960-A (GB)
Title: Aluminium base alloy
IPC: C22C21/12
Filed: 1966-10-17
Abstract: An aluminium base alloy comprises .Cu.4.2 - 6.0% .Ag.0.05 - 3.0% the balance, apart from optional ingredients and impurities listed below, being aluminium.  The above mentioned elements may be:- .Zn 0.5-4.0%.Cr up to 0.5% .Mg 0.15-0.4%.Cd up to 0.3% .Ti 0.15-0.7%.Li, Ca, Na up to 0.02% ..in total .B 0.001-0.01%.Co up to 0.3% .Si up to 0.15%.Sn up to 0.005% .Fe up to 0.15%.Sb up to 0.005% .Mn up to 0.3%.Bi up to 0.005% .Mo up to 0.3%.Zr up to 0.25% .Ce up to 0.3%.Ni up to 0.3%  The alloy may be solution treated at 980 DEG -1000 DEG F., quenched in water and aged at 280 DEG -340 DEG F.
Patent GB-1405412-A (GB)
Title: Apparatus  for obtaining a substantially continuously scaled  analogue signal representing the average value of a sequence of  binary words
IPC: G06J1/00
Filed: 1971-10-05
Abstract: 1405412 Producing analogue average of digital sum G D SEARLE & CO Ltd 27 Sept 1972 [5 Oct 1971] 46362/71 Heading H3H Apparatus for obtaining an analogue signal representing the average of a sequence of binary words comprises an accumulator 1 for summing the digital words and storing the sum, means 2 for dividing the sum by 2<SP>n</SP> and passing the quotient to digital to analogue converter 3, a counter 22 counting the number of words and logic circuits 21 for changing the division factor 2<SP>n</SP> of the means 2 at predetermined counts of counter 22 and for switching circuit 40 so that it supplies a voltage equal to 2<SP>n</SP> clivided by the sum in counter 22 as reference to converter 3. As shown, the dividing means 2 takes its output from 9 of the possible sixteen stages of the binary store 1 and the division factor is increased by two by moving each of the nine outputs to the next higher stage. These changes occur each time the output of the binary counter 22 contains only one "1" i.e. at 1, 2, 4, 8, 16, 32, 64, 128 and 256. The reference voltage is derived by passing a fixed current of 1 127/128 mA through the combination of resistors 5-12 switched by switches 14-20 according to patterns set in logic 21 and the reading of counter 22 see Fig. 2 of drawings (not shown).
Patent GB-1060466-A (GB)
Title: Improvements in or relating to novel anthracene derivatives
Inventor: JUCKER ERNST
IPC: A61K31/445
Filed: 1963-11-27
Abstract: Novel compounds of the general Formula I <FORM:1060466/C2/1> (wherein each of R1 and R2 represents a C1- 4 alkyl or C2- 4 alkenyl radical and R3 represents a C1- 4 alkyl radical), and their acid addition salts, are prepared by splitting off the elements of water from a compound of the general Formula IV <FORM:1060466/C2/2> by the action of a concentrated mineral acid, a strong organic acid, SOCl2, POCl3, ZnCl2 or acetic anhydride, or a mixture thereof (especially a mixture of acetic anhydride and concentrated HCl), and, if desired, converting the product into a salt with an inorganic or organic acid. Substituted 9 - hydroxydihydroanthracenes (IV) are prepared by a Grignard reaction from 10-R1-10-R2-anthrones-(9).  Pharmaceutical compositions having antihistaminic, cough inhibiting, bronchodilatory, serotonin inhibiting, anticholinergic and/or sedative properties, for enteral or parenteral administration, comprise a compound of general Formula I, or a physiologically acceptable acid addition salt thereof, and a physiologically acceptable carrier.
Patent GB-1292740-A (GB)
Title: Surface temperature sensors
IPC: G01K7/18
Filed: 1970-10-02
Abstract: 1292740 Resistance thermometer VYZKUMNY USTAV ORGANICKYCH SYNTEZ 2 Oct 1970 [3 Oct 1969 8 Sept 1970] 46890/70 Heading H1K A resistance thermometer comprises a wire mounted between a base plate and a cover plate of non-fibrous material, the components being bonded together. Either or both of the plates may be of laminated silicon glass, mica, glass foil, ceramic or are organic material or of a metal such as platinum insulated with a layer of ceramic. The wire may be of platinum, nickel, tungsten or alloys thereof. The plates may be held together by soldering, and may be perforated. One of the plates may be of magnetic material to enable the device to be attached to a surface.  In the embodiments the wire is arranged in a meandering pattern (Figs. 1 and 2, not shown); a plurality of such patterns are arranged side by side between a pair of plates (Fig. 3, not shown); two wires extended a constant distance apart in a meandering pattern (Fig. 4, not shown); two meandering resistor wires are arranged one either side of a single base-plate and are provided with separate cover plates (Figs. 5 and 6, not shown); two units, each comprising a resistor and a heating element arranged on either side of a base-plate and provided with two cover plates, are arranged to form a thermal feedback system (Fig. 7, not shown) and the two resistor-heater structures of the previous embodiment are placed on either side of an insulating layer and enclosed in a thermally insulating enclosure (Fig. 8, not shown).
Patent GB-1154338-A (GB)
Title: Plasticized Ethylene-Acrylic Acid and Ethylene-Methacrylic Acid Copolymers
Inventor: WARTMAN LLOYD HENRY
IPC: C08L23/08
Filed: 1966-10-21
Abstract: 1,154,338. Interlayers for safety glass. UNION CARBIDE CORP. 21 Oct., 1966 [22 Oct., 1965], No. 47200/66. Addition to 1,089,906. Heading B5N. [Also in Division C3] An interlayer for safety glass is composed of a plasticized composition formed from a copolymer of ethylene and methacrylic acid, a metal salt neutralized copolymer thereof, or a metal salt neutralized copolymer of ethylene and acrylic acid, and as plasticizer therefor a compound of formula wherein R is hydrogen or methyl, R 1  is C 2-6  alkylene, R 2  is C 3-8  alkylene, R 3  is C 5-8  alkylene, and R 4  is C 6  alkylene, and each (a) is an independent integer of 0 to 250, each (b) is an independent integer of 0 to 25, each (c) is an independent integer of 0 to 15 with at least one (c) being greater than 0, and each (e) is an independent integer of 0 to 12. Exemplified plasticizers are polypropylene glycol, glycerol, glycerol/propylene oxide adduct, 1,2,6-hexane triol/propylene oxide adduct, and sorbitol/propylsne oxide adduct.
Patent GB-1414624-A (GB)
Title: Addition of magnesium to molten metal
IPC: C21C7/064
Filed: 1972-10-13
Abstract: 1414624 Magnesium containing additives for ferrous melts MAGNESIUM ELEKTRON Ltd 16 Nov 1972 [17 Nov 1971 (2) 13 Oct 1972 (2)] 53409/71 53410/71, 47350/72 and 47352/72 Heading C7D A Mg-containing additive for ferrous melts (e.g. S.G. iron, malleable iron) comprises a tablet or briquette of Mg or Mg-based alloy (e.g. Mg-Ce) and particles, CaF 2  particles, and particles of a material inert to Mg at its melting point, such that at the temperature of the ferrous melt the material forms a stable metal-permeable matrix around the Mg particles. Preferred materials are carbonaceous materials, and metal oxides, e.g. Al 2 O 3 , TiO 2 , MgO and vermiculite. A binder selected from phenolic resins, epoxy resins and polysaccharides may be included. CaF 2  may be partially replaced by fluorides of Mg, alkaline earth and rare earth metals, or zirconium double fluorides. Other carrier materials, e.g. CaO, Fe powder, may also be present. Chromium sesquioxide may be added to the binder to strengthen the briquettes.
Patent GB-1291264-A (GB)
Title: A process for the manufacture of an axle for a motor vehicle
IPC: B60B35/00
Filed: 1969-10-23
Abstract: 1291264 Making axles BENTELERWERKE AG 23 Oct 1969 [23 Oct 1968] 47424/69 Heading B3A [Also in Division F2] A shaft (e.g. of the form shown) is produced by forging over a mandrel 14 at least one heated end of a tube of uniform cross-section as at 10a by tools 17 (e.g. shaped hammers) rotating relative to the tube while the tube is axially compressed (e.g. by shoulders 15) to thicken the tube wall near the end. Either the tools 17 or the tube may be rotated. Both ends of the tube may be forged simultaneously. The tube end(s) may be heated by a burner during forging.
Patent GB-1005863-A (GB)
Title: Dispensing adaptor
IPC: B65D51/28
Filed: 1962-12-17
Abstract: 1,005,863. Dispensing adaptor; container closures. PROCTER & GAMBLE CO. Dec. 17, 1962 [Dec. 15, 1961], No.47510/62. Headings B8D and B8T. A dispensing adaptor for discharging a fluent product as an additive to a base product comprises an annular storage chamber 25 defined by inner and outer walls 24 and 23 respectively, at least one passageway 38 leading from the chamber to a discharge opening 27 at the upper end of the inner wall, the chamber being closed at its lower end by a movable, deformable or perforable seal member 30. The adaptor may be screwed on to the neck of a collapsible tube 20 causing the seal member to be forced up-  wards as projections 36 contact the neck edge of the tube. On squeezing the tube base product is dispensed through the opening 27 and also enters the annular chamber whereby additive material is forced through the passageway 38 and out through the opening 27. The passageway 38 may be tapered. In a modification the seal member has sections which can be punched out when the adaptor is used. Various modifications of seal member are described. The annular storage chamber may have one or more dividing walls to contain two or more additive products and the adaptor may have a depending skirt.
Patent GB-1244158-A (GB)
Title: Fluid displacement unit
Inventor: GRANTHAM MAX EDWARD
IPC: F04B53/10
Filed: 1967-10-18
Abstract: 1,244,158. Delivering measured quantities of liquid. TECALEMIT (ENG.) Ltd. 18 Oct., 1968 [18 Oct., 1967], No. 47534/67. Heading B8N. A metering unit for delivering measured quantities of a fluid e.g. a lubricant, comprises a housing 1 having an inlet 9 and an outlet 8, a piston 3 having a duct 11, a resilient means for biasing the piston away from the outlet and a valve member 6. A high pressure pulse in the fluid supplied to the inlet causes the valve member and the piston to be forced against bias of the resilient means (as shown the means is an annular 5) to eject fluid via the outlet and to permit fluid to flow into chamber 7 via a restricted gap between the valve member and wall 13. A subsequent low pressure pulse in the fluid supplied to the inlet allows, due to the differential pressures acting on the valve member, the valve member to move away from its engagement with the piston 3. Fluid in the chamber 7 is thus able to flow into the duct 11. The resilient annulus subsequently forces the piston to the illustrated position. The cycle is then repeated. The biasing means may be a spring.
Patent GB-1191958-A (GB)
Title: Three-Stage Hydrocracking Process
Inventor: LANGHOUT WOUTER CORNELIS VAN Z
IPC: C10G65/10
Filed: 1968-10-08
Abstract: 1,191,958. Hydrocracking. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 8 Oct., 1968, No. 47653/68. Heading C5E. Hydrocarbon oils are catalytically hydrocracked at elevated temperature and pressure in three reactors 9, 40, 48, the feed to the reactor 9 being a high boiling oil 1, to the reactor 40 a high boiling fraction 32 from a separator 16, 24 . . . 31 following the reactor 9, and to the reactor 48 a low boiling oil 41. The separator produces an H 2 -containing gas 10, and at least one low boiling and at least one high boiling fraction, and effluent 12, 11 is recycled to the separator from the reactors 40, 48 to join effluent 13 from the reactor 9. In the Figure, 3 is a recycle oil stream, 19, 20 a water wash stream, and 22 fresh H 2 -rich gas. In an example, the oil 1 is a flash distillate (I.B.P. 316‹ C.), the oil 41 is kerosene (I.B.P. 180‹ C.), and stream 3 is a fraction boiling above 340‹ C. Fraction 32 boils in the range 180‹ to 340‹ C. Products obtained include C 1  to C 4  hydrocarbons at 25, and fractions 28, 29 having BRs respectively of 50‹ to 85‹ C. and 85‹ to 180‹ C. The first stage catalyst should be insensitive to nitrogen compounds, and may be as described in Specification 1,092,400, and the second and third stage catalysts may be similar to each other and incorporate a crystalline zeolitic molecular sieve.
Patent GB-1528212-A (GB)
Title: Estrogen derivatives
IPC: C07J1/00
Filed: 1975-11-20
Abstract: 1528212 Estra-1,3,5(10)-triene compounds FARMILA FARMACEUTICI MILANO SpA 20 Nov 1975 [13 Dec 1974] 47802/75 Heading C2U Novel steroids have the formula  wherein (i) R is OH, R 1  is 2-tetrahydropyranyloxy (hereinafter THPO) and R 2  is α-OH, #-OH, α-THPO, #-THPO or =O; (ii) R is THPO, R 1  is # - OH, # - THPO or C 2-10  # - alkanoyloxy and R 2  is # - OH, α - THPO, #THPO 2  C 2-10  α- or #-alkanoyloxy or =O or R 1  and R 2  together are 16#,17# - isopropylidenedioxy, and when R 1  is #-THPO then R 2  may also be α-OH; (iii) R is C 1-4  alkoxy; R 1  is #-THPO and R 2  is α-OH, α-THPO or #-THPO; or (iv) R is benzyloxy, R 1  is #-THPO and R 2  is α-OH, α-THPO or #-THPO, or R 1  and R 2  together are 16#,17#-isopropylidenedioxy. Reactions used in their preparation are as follows, only the 3-, 16- and 17-substituents being named: (a) 3-benzyloxy-17#- THPO - 16 - keto#3 - OH - 17# - THPO - 16- keto#3 - THPO - 17# - THPO - 16 - keto; (b) 3 - OH or THPO - 16 - keto - 17# - THPO# 3 - OH or THPO - 16# - OH - 17# - THPO, the reduction being effected with a complex metal hydride; (c) 3-OH or THPO or alkoxy or benzyloxy - 16 - keto - 17# - THPO#3 - OH or THPO or alkoxy or benzyloxy-16α-OH-17#- THPO, the reduction being effected with an alkali metal in an alcohol; (d) 3-alkoxy or THPO or benzyloxy - 16α - or 16# - OH - 17#- THPO#3 - alkoxy or THPO or benzyloxy- 16α - or 16# - THPO - 17# - THPO; (e) 3- benzyloxy - 16α- or 16# - THPO - 17# - THPO #3 - OH - 16α- or 16# - THPO - 17# - THPO; (f) 3 - benzyloxy - 16# - OH - 17# - OH# diacylate#3 - ol#3 - THPO#3 - THPO - 16#- OH - 17# - OH (obvious substituents in intermediates omitted), and (g) 3-benzyloxy or THPO - 16# - OH - 17# - OH#3 - benzyloxy or THPO#16#, 17# - isopropylidenedioxy. Other similar processes also described, e.g. process (a) using the 16#-ol the 16α-ol, the 16#-THPO compound or the 16α-THPO compound. 3 - Benzyloxy - 17# - THPO - estra - 1,3,5(10)- trien - 16 - one is prepared by etherification of the corresponding 17#-ol. The novel steroids have use in the cure of climacteric and menopausal disturbances.
Patent GB-1428758-A (GB)
Title: Exhaust emission control device
IPC: F01N3/18
Filed: 1973-10-16
Abstract: 1428758 Internal combustion after burners HITACHI Ltd 16 Oct 1973 [20 Oct 1972] 48165/73 Heading F4B In an internal combustion engine after burner arrangement, passage means arranged to allow a restricted flow of exhaust gases is mounted between the engine and the after burner, and a throttle is opened to increase the flow as the engine speeds up. In one embodiment, Fig. 1, a damper 8 with an opening to allow passage of a small amount of exhaust gases, is opened when the temperature of the burnt gases fed to a bimetal member through a passage 12 attains a desired level. In another embodiment, Fig. 3, the damper 8 is opened when the pressure in the engine intake manifold falls to a predetermined value. The damper may be controlled by a rod connected to a choke control, or throttle control, and the restricted flow of exhaust gases may be through a separate passage rather than through a hole in the damper. An air-supply by-pass valve may be linked to the damper, to reduce the supply of air when the engine attains cooling temperature.
Patent GB-1332356-A (GB)
Title: Lactam polymerization with halogen substituted aromatic initiators
IPC: C08G69/00
Filed: 1970-10-09
Abstract: 1332356 Hollow polylactam mouldings UNION CAKBIDE CORP 9 Oct 1970 [10 Oct 1969] 48234/70 Heading B5A [Also in Division C3] Hollow objects, are formed from a lactam polymerization system by rotational moulding, compression mould or extrusion. in Example 14, the system at 80 C., below polymerization temperature, is syringed into a ball-mould which is then transferred to a rotational-moulding oven preheated to 220C. The ball-mould is rotated at 12 r.p.m. for 20 minutes and then watercooled to room temperature, and the product is separated. The system comprises #-caprolactam, NaH catalyst and 4,4<SP>1</SP>-dichlorodiphenyl sulphone initiator.
Patent GB-1366330-A (GB)
Title: Glass vapour deposition
IPC: H01L21/316
Filed: 1971-10-20
Abstract: 1366330 Lead silicate film; glass films INTERNATIONAL BUSINESS MACHINES CORP 20 Oct 1971 [23 Nov 1970] 48760/71 Headings C1A and C1M A glass film containing silicon oxide and lead oxide is deposited on a semi-conductor surface (e.g. Si) by exposing the surface heated to at least 300 C. to an atmosphere comprising O2, an organo-lead compound and an organosilicon compound or mono-silane (SiH4). Organo-lead compounds may include tetraethyl lead, tetrabutyl lead, tetramethyl lead and tetraphenyl lead. Organo-silicon compounds may include tetraethyl orthosilicate, diethylsilane, dimethyl diethoxysilane, diphenyldiethoxysilane, diphenyldimethyloxy silane, methyltrimethoxysilane tetramethylsilane, triethoxysilane and tetravinyl silane. An inert gas (e.g. N2, He or Ar) may be present. Organic compounds of Al, Zn, Sn, Cd, Ti, P, B, Ba, As, Sb, Zr and W may be used as sources of oxide dopants in the glass. In examples an O2/N2 mixture was passed through tetraethyl lead and O2 through tetraethyl orthosilicate and the 2 streams mixed in a reaction chamber containing heated silicon wafers. In some examples there are subsidiary feeds to the reaction chamber which are produced by passing N3 and O2 through tetramethyl borate and tetramethylphosphite respectively.
Patent GB-1002708-A (GB)
Title: A composite polyolefin base sheet
IPC: C08J7/052
Filed: 1963-12-11
Abstract: An anchor-treated polyethylene or polypropylene film carries on at least one of its surfaces a coating of at least 50% by weight of a resinous copolymer of from 80-92% by weight of styrene and from 20-8% by weight of butadiene-1,3 prepared in the presence of from 0,2-3,0 parts by weight of a mercaptan modifier having at least 6 carbon atoms per 100 parts by weight of monomers.  The base film may be unoriented, uniaxially oriented, or preferably equally or unequally biaxially oriented, and it is anchor-treated, e.g. by exposure to a corona discharge.  The mercaptan modifier may be isohexyl, octadecyl, dodecyl, or tertiary dodecyl mercaptans.  The coating composition may be applied in the form of a latex or as a lacquer.  Conventional additives and extenders may be incorporated in the coating composition.  Specification 834,822 is referred to.