Showing papers by "Mitsubishi published in 1971"

Inert gas system for a tanker

Abstract: AN INERT GAS FOR FLOODING COMPARTMENTS OR OTHER OIL CONTAINERS OF A TANKER OR OTHER VESSEL IS PRODUCED BY STRIPPING FLUE GAS OF ITS SO2 CONTENT WITH AN AQUEOUS SODIUM HYDROXIDE OR SODIUM CARBONATE SOLUTION IN A SCRUBBER, AND OXIDIZING THE RESULTING SODIUM SULFITE IN THE SOLUTION WITH ATMOSPHERIC OXYGEN IN THE SAME SCRUBBER, WHEREUPON A SODIUM SULFATE SOLUTION IS OBTAINED WHICH MAY BE DISCHARGED OVERBOARD WITHOUT DAMAGE TO MARINE LIFE.

Weather-and impact-resistant resin composition comprising a graft copolymer containing multi-layer polymer particles and a rigid resin

Abstract: A WEATHER- AND IMPACT-RESISTANT RESIN COMPOSITION OBTAINED BY POLYMERIZING 5 TO 1900 PARTS BY WEIGHT OF A MONOMER MIXTURE (B) OF 90 TO 10 PARTS BY WEIGHT OF AN AROMATIC VINYL COMPOUND AND 10 TO 90 PARTS BY WEIGHT OF AT LEAST ONE ACRYLIC UNSATURATED COMPOUND (100 PARTS BY WEIGHT IN TOTAL) IN THE PRESENCE OF 100 PARTS BY WEIGHT (SOLIDS) OF A LATEX OF A CROSSLINKED ELASTOMER (A) CONSISTING OF 60 TO 99.9 PARTS BY WEIGHT OF AT LEAST ONE ACRYLIC ESTER, 39.9 TO 0 PART BY WEIGHT OF AT LEAST ONE MONOMER COPOLYMERIZABLE THEREWITH, AND 0.1 TO 10 PARTS BY WEIGHT OF A CROSSLINKING MONOMER HAVING 2 OR MORE FUNCTIONAL GROUPS, WHICH IS COPOLYMERIZABLE WITH BOTH SAID MONOMERS, AND/OR AN ORGANIC PEROXIDE (100 PARTS BY WEIGHT IN TOTAL): AND, IF DESIRED, MIXING A RIGID RESIN (D) WITH THE RESULTING COPOLYMER (C) SO THAT THE COMPOSITION BEING TAINS 5 TO 40% BY WEIGHT OF (A), THE COMPOSITION BEING CHARACTERIZED IN THAT THE PARTICLES OF SAID CROSSLINKED ELASTOMER LATEX ARE PRODUCED IN 2 OR MORE SEPARATE STEPS SO THAT THE FIRST LAYER, I.E. THE MOST INNER LAYER OF THE PARTICLES CONTAINS 90 TO 40 PARTS BY WEIGHT OF THE 100 PARTS BY WEIGHT OF (A) AND HAS A DEGREE OF SWELLING OF 7 TO 30 AND THE SECOND OR SUBSEQUENT LAYERS, I.E. OUTER LAYER CONTAIN 10 TO 60 PARTS BY WEIGHT OF THE 100 PARTS BY WEIGHT OF (A) AND HAVE AT LEAST TWO LAYERS DIFFERENT WHEREBY THE PARTICLES HAVE AT LEAST TWO LAYERS DIFFERENT IN COMPOSITION AND/OR DEGREE OF SWELLING, AND THE OUTER LAYER OR LAYERS OF THE PARTICLES ARE HIGHER IN ELASTICITY THAN THE INNER LAYER.

Polyisocyanurate foam and process for producing the same

Abstract: DRAWING 1. A MODIFIED ISOCYANURATE FOAM WHICH IS A PRODUCT OF A ONE STAGE REACTION IN THE PRESENCE OF A BLOWING AGENT AND AN ISOCYANATE TRIMERIZATION CATALYST FROM THE REACTANTS CONSISTING ESSENTIALLY OF (1) A POLYNUCLEAR POLYISOCYANATE HAVING AN ISOCYANATE EQUIVALENTS PER EQUIVALENT OF SAID POLYISOCYANATE, 4 (2) A POLYEPOXIDE IN A PROPORTION OF FROM 0.1 TO 0.6 EQUIVALENT OF SAID POLYISOCYANATE (3) A POLYOL IN A PROPORTION OF FROM 0.15 TO 0.4 EQUIVALENTS PER EQUIVALENT OF SAID POLYISOCYANATE, WHEREIN WEIGHT RATIOS OF SAID POLYSISOCYYANATE AND SAID POLOL TO THE TOATL WEIGHT OF SAID THREE REACTANTS ARE 50 TO 80 PERCENT AND 15 TO 40 PERCENT RESPECTIVELY.

Effects of Catalysts on Dielectric Properties and D. C. Conduction in Poly(ethylene terephthalate)

Abstract: Effects of Catalysts on Dielectric Properties and D. C. Conduction in Poly(ethylene terephthalate)

N-substituted-{66 {40 -tetrahydrophthalimides

Abstract: A Delta 1 - tetrahydrophthalic anhydride is reacted with an amine in the presence of lower fatty acid. Alternatively N-(4hydroxyphenyl)- Delta 1-tetrahydrophthalimide or a salt thereof is reacted with an aralkyl halide. A N-substituted- Delta 1tetrahydrophthalimide compound having herbicidal activity is produced. This compound has the formula R'' is naphthyl; phenyl; phenyl substituted by 1-3 substituents selected from the group consisting of halogen, nitro, cyano, thiocyano, carboxyl, haloalkyl, lower alkyl and alkylthio; -CH2Y wherein Y is phenyl, naphthyl or phenyl substituted by 1-5 substituents selected from the group consisting of halogen, nitro, lower alkyl and lower alkoxyl; or WHEREIN Z is phenyl, naphthyl, or phenyl substituted by at least one substituent selected from the group consisting of halogen, nitro, lower alkyl and lower alkoxyl.

Dilute Solution Properties of Randomly Branched Poly(methyl methacrylate). II.

Abstract: Randomly branched polydisperse polymers prepared by copolymerization of methyl methacrylate with ethylene dimethacrylate were fractionated by the fractional solution technique. Light scattering, viscosity, osmotic pressure, and sedimentation measurements were carried out on the fractionated samples. It was found that in the theta state the intrinsic viscosity of a branched molecule obeyed Zimm and Kilb’s g1/2-rule, but in a good solvent it showed some deviation if the sample had many branch points. It was also found that the sedimentation constant of a branched molecule agreed with the theoretical value derived by Kurata and Fukatsu if the sample had a narrow molecular weight distribution.

Heat sensitive recording material

Abstract: A HEAT SENSITIVE RECORDING MATERIAL CONTAINING AT LEAST ONE OF LACTONE COMPOUNDS HAVING THE GENERAL FORMULA, (WHEREIN R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A LOWER ALKYL GROUP OF 1 TO 5 CARBON ATOMS, A LOWER ALKOXY GROUP OF 1 TO 5 CARBON ATOMS, AMINO GROUP, A LOWER ALKYL AMINO GROUP OF 1 TO 5 CARBON ATOMS AND BENZYL AMINO GROUP; R1 AND R3 ARE SELECTED FROM THE GROUP CONSISTING OF THE SAME MEMBERS AS ABOVE DEFINED ON R2 EXCEPT THAT BENZYL AMINO GROUP IS EXCLUDED; AT LEAST ONE OF R1 AND R2 ARE SELECTED FROM AMINO GROUP, A LOWER ALKYL AMINO GROUP OF 1 TO 5 CARBON ATOMS AND BENZYL AMINO GROUP; R5 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A LOWER ALKYL GROUP OF 1 TO 5 CARBON ATOMS, A LOWER ALKOXY GROUP OF 1 TO 5 CARBON ATOMS, HALOGENES, A LOWER ALKYL AMINO GROUP OF 1 TO 5 CARBON ATOMS, BENZYL AMINO GROUP AND ARYL AMINO GROUP; AND R4,R6 AND R7 ARE SELECTED FROM THE GROUP CONSISTING OF THE SAME MEMBERS AS ABOVE DEFINED ON R5 EXCEPT THAT ARYL AMINO GROUP IS EXCLUDED) AND AT LEAST ONE PHENOL COMPOUNDS (PHTHALAN-1,9''-XANTHENE) 3-(O=),1''-R4,2''-R5,3''-R6,4''-R7,5''-R1,6''-R2,7''-R3-SPIRO

Process for desulfurizing waste flue gases while producing gypsum as byproduct

Abstract: A PROCESS FOR DESULFURIZING WASTE FLUE GASES WHILE PRODUCING GYPSUM AS BY-PRODUCT, CHARACTERIZED IN THAT FINE AIR BUBBLE GENERATING MEANS IS PROVIDED IN AN ABSORBING LIQUID RESERVOIR FROM WICH AN ABSORBING LIQUID IS SUPPLIED TO A GAS ABSORBING UNIT, AND THEABSORBING LIQUID IS OXIDIZED IN SAID RESERVOIR WITH AIR INTRODUCED THEREIN AND DIVIDED INTO FINE AIR BUBBLES BY SAID MEANS.

Oxazolidone-modified isocyanurate resins

Abstract: RESINS HAVING A POLYISOCYANURATE STRUCTURE ARE PRODUCED BY TRIMERIZING AN ISOCYANATE-TERMINATED POLYOXAZOLIDONE BY MEANS OF A TRIMERIZATION CATALYST SUCH AS A TERTIARY AMINE FOAMED RESIN OF THE FOREGOING TYPE EXHIBIT UNEXPECTEDLY LOW FRIABILITY AND HIGH FLAME RESISTIVITY, AND THUS ARE USEFUL AS BUILDING MATERIALS AND FOR OTHER APPLICATIONS REQUIRING A COMBINATION OF HIGH HEAT AND FLAME RESISTANCE THESE RESINS ARE ALSO USEFUL AS COATINGS, ADHESIVES, ELASTOMER, AND THE LIKE

Catalytic steam dealkylation

Abstract: 1. A PROCESS FOR CATALYTIC STEAM DEALKYLATION OF ALKYL AROMATIC HYDROCARBON WHICH COMPRISES CAUSING AN ALKYL AROMATIC HYDROCARBON TO CONTACT, IN THE PRESENCE OF STEAM, A CATALYST SUPPORTED BY A CARRIER, SAID CATALYST COMPRISING RHODIUM IN A QUANTITY OF FROM 0.05 TO 5.0 PERCENT BY WEIGHT WITH RESPECT TO THE CARRIER AND AT LEAST ONE OXIDE OF A GROUP IIIB METAL OF THE PERIODIC TABLE IN A QUANTITY OF FROM 0.05 TO 20 PERCENT BY WEIGHT WITH RESPECT TO THE CARRIER.

Stage seals for a turbine

Abstract: A plurality of ducts disposed in a stationary blade ring diaphragm of a steam turbine, the ducts have inlets disposed upstream of the last downstream fin of a labyrinth seal formed between the diaphragm and a rotor. The ducts extend through a plurality of stationary blades disposed in the diaphragm, and have outlets on the downstream side of the diaphragm adjacent a casing, for reducing the total quantity of steam bypassing the stationary and rotating blades forming one stage of the turbine by directing steam, which passes through the labyrinth seal adjacent the rotor, to an area upstream of a labyrinth seal associated with a shroud ring encircling the rotatable blades of this stage of the turbine.

Gaseous-phase polymerization of olefins

Abstract: Gaseous-phase polymerization of an α-olefin with a catalyst and without a liquid dispersant is carried out under the following conditions: 1. A solid phase comprising said catalyst and particulate olefin polymer is caused principally by mechanical agitation to undergo circulation in the up-and-down directions within a reaction chamber of substantially vertical-cylinder type, a reaction bed being formed by said circulating solid phase; 2. The ratio of the diameter to height of said reaction bed is of the order of from 1 : 0.5 to 1 : 3; 3. The starting-material α-olefin is supplied in liquid state into the reaction chamber from a point above the reaction bed and vaporized within the reaction chamber; and 4. Heat of polymerization reaction is removed principally by the latent heat of vaporization absorbed by said vaporization of the liquid α-olefin.

Continuous flow zonal rotor

Abstract: A method and apparatus for continuous flow centrifugation wherein a sample is introduced through the top surface of a rotor core into a sample zone adjacent a gradient zone so that the sample passes substantially 360* and a sample gradient is formed in said gradient zone. The spent sample is removed through the bottom surface of said rotor core, and the sample gradient is removed after separation by introducing a liquid gradient through the top surface of the rotor core to the gradient zone to displace the sample gradient radially inward. The sample gradient is passed out of the core while the rotor is spinning through a passage at the core axis at a reduced pressure in the passage. Since only one liquid stream enters or exits at or near the core axis, the possibility of sample product contamination is eliminated.

Flexible shaft stabilizer

Abstract: A flexible shaft construction to transmit rotational energy between a motor and a centrifuge rotor having a thin, long flexible shaft surrounded by a resilient sleeve and a stiff tubular member. The shaft, sleeve and tubular member are arranged so that there is no relative rotational motion between them.

Light activated thyristor

Abstract: The disclosed thyristor includes an annular N emitter layer disposed on a P base layer to encircle the central portion of the latter. Another N emitter layer is disposed on the exposed surface of the central base portion to form an auxiliary thyristor around which a main thyristor is formed. The auxiliary thyristor responds to light falling upon its emitter layer to be fired. A current flowing through the fired thyristor flows into the annular emitter layer through a gate electrode bridging the auxiliary emitter layer and P base layer to fire the main thyristor.

Heat exchanging mixer-reactor for high viscosity substances

Abstract: A heat exchanging mixer-reactor for high viscosity substances having two rotating shafts, each carrying a plurality of closely spaced agitating discs, arranged inside an inner casing through which the high viscosity substance is passed via oppositely located inlet and outlet openings; a jacket for the circulation of a heating or cooling medium formed by an outer casing surrounding the inner casing; wherein the agitating discs of one shaft overlap those of the other shaft and rotate in opposite directions, carrying on their periphery wiper fingers whose movements are coordinated with radial cutouts in the discs on the other shaft to avoid interference.

Apparatus for electroerosively etching a workpiece

Abstract: A circuit for an electroerosive etching apparatus is disclosed which includes first and second direct current sources controlled by first and second switching circuits, respectively. The first switching circuit includes a plurality of switching elements, all of which are connected in parallel to facilitate the delivery of large currents and a pulse source for controlling the switching elements. The second switching circuit may include only one switching element, and is designed to supply only small currents. In operation, the first and second switching circuits initially cooperate to apply a potential nearly equal to the combined potentials of the two direct current sources across a working gap. Once a discharge is achieved using this high potential, the second switching circuit is automatically cut off, leaving the first switching circuit operative to supply the large current needed in the etching operation. A protective circuit is also included to prevent damage of the first switching circuit due to overloading.

Process for preparing linear polyesters

Abstract: A process for preparing linear polyesters by polycondensation of glycol terephthalates wherein (1) an antimony-containing catalyst which is soluble in the polycondensation system and (2) at least one member selected from alpha -hydroxycarboxylic acids; alpha , beta -dicarboxylic acids; derivatives thereof such as ester, amide, acid anhydride, mixed acid anhydride or acid halide; and sulfur-containing derivatives thereof were added to the polycondensation system. Resultant polyesters exhibit excellent whiteness and transparency.

Optical tracking apparatus

Abstract: This invention consists of an optical tracking apparatus comprising a source of parallel light, such as laser, which irradiates the object to be tracked. A light scanning device, which is disposed between the source of parallel light and the object, is provided to deflect or scan the light from the source across the object to be tracked. A convex lens is provided to focus light reflected from the object. A light detector is provided which receives the reflected light and converts it into an electrical signal. The output of the light detector is fed to a phase detector which senses its phase with reference to the phase of the scanning device. Deviation of the scanning center of the scanned light from a selected position on the object to be tracked is detected, and a servo-system is provided to reduce the deviation to zero.

Method for spreading powder and device therefor

Abstract: A device for spreading powder in which air under pressure carrying a pulverulent treating agent in the form of powder and/or granular material is forced into a soft and light tubular pipe from one end or both ends thereof and discharged or spread downwardly through a plurality of nozzles disposed spaced apart from each other longitudinally of the tubular pipe.

Process for producing cyclododecatrienes

Abstract: Crude butadiene-1,3 which is a B-B fraction is subjected to catalytic trimerization to produce cyclododecatriene-1,5,9 in the presence of a Ziegler-type catalyst comprising a Ti-compound, e.g., Ti (OPrCl)Cl3, an Al-compound, e.g., AlEt2Cl, and electron-donor compounds containing S and containing P, e.g., dimethyl sulfoxide and triphenyl phosphate.

Vinyl chloride polymer blended with a cross-linked vinyl chloride polymer

Abstract: IT HAS BEEN FOUND THAT PROCESSABILITIES OF VINYL CHLORIDE POLYMER OR COPOLYMER CAN BE IMPROVED, WITHOUT AFFECTING THE SURVACE CHARACTERISTICS AND MECHANICAL PROPERTIES THEREOF, BY THE INCORPORATION OF 01 TO 20% BY WEIGHT OF A CROSS-LINKED VINYL CHLORIDE COPOLYMER

Combustion apparatus for a gas turbine

Abstract: A gas turbine having a fuel nozzle which is encompassed by a plurality of annular plenum chambers which are supplied with pressurized fluid which is directed at an angle toward a fuel stream being sprayed into the combustion chamber from the fuel nozzle to atomize and disperse the fuel to promote more complete combustion and minimize smoke. A vent or a frustoconical baffle is also utilized to stabilize the combustion of the fuel during an ignition portion of the operating cycle of the turbine.

Paper reinforcing composition containing starch and a starch-acrylamide graft polymer

Abstract: PAPER REINFORCING AGENT COMPOSED MAINLY OF A POLYMER COMPOSITION WHICH INCLUDES A GRAFT POLYMER, A WATERSOLUBLE POLYSACCHARIDE, AND, IF NECESSARY, AN ACRYLAMIDE TYPE RANDOM COPOLYMER. THE GRAFT POLYMER IS THAT HAVING THE WATER-SOLUBLE POLYSACCHARIDE AS ITS BACKBONE POLYMER AND A COPOLYMER DERIVED FROM A MONOMER MIXTURE OF ACRYLAMIDE AND AN UNSATURATED CARBOXYKIC ACID, AS ITS BRANCH POLYMER; SAID RANDOM COPLYMER IS THAT WHICH IS DERIVED FROM THE AFORESAID MONOMER MIXTURE. THE WATER-SOLUBLE POLYSACCHARIDE CONTENT IS 5-22% BY WEIGHT BASED ON THE COMPOSITION. THE PAPER REINFORCING AGENT IS OBTAINED BY POLYMERIZING THE AFORESAID MONOMER MIXTURE IN THE PRESENCE OF THE WATER-SOLUBLE POLYSACCHRIDE, OR BY FURTHER ADDING THERETO A SUITABLE AMOUNT OF THE WATER-SOLUBLE POLYSACCHARIDE AMD/OR THE ACRYLAMIDE TYPE RANDOM COPOLYMER. THE REINFORCING AGENT EXHIBITS HIGH PAPER-REINFORCING PROPERTY EVEN IN A SMALL QUANTITY AND IS MARKEDLY CHEAPER THAN ANY OF THE KNOW ACRYLAMIDE TYPE PAPER REINFORCING AGENTS.

Process and apparatus for continuously relaxing textile yarns

Abstract: A textile yarn is continuously relaxed during its advance through a relax tube extending along the path of advance of the yarn and an accumulation tube wherein the yarn is accumulated so as to stay therein for a predetermined time by flowing a heating medium through the relax tube and the accumulation tube.

Defrosting method and apparatus

Abstract: In a method of defrosting a first heat exchanger, on the heat source side of refrigerating apparatus having a second heat exchanger on the utilization side and a fluid flow circuit interconnecting the two heat exchangers, the maximum temperature difference between the inlet fluid temperature and the outlet fluid temperature of the second heat exchanger is determined. During operation of the refrigeration apparatus, the difference between the inlet and outlet fluid temperatures of the second heat exchanger is detected and, when the ratio of the detected temperature difference to the maximum temperature difference decreases below a preset value, due to icing or frosting of the first heat exchanger, defrosting of the first heat exchanger is initiated. The apparatus includes temperature sensing means detecting the inlet fluid temperature and the outlet fluid temperature of the second heat exchanger and conjointly controlling swinging of a first lever about a pivot. In moving toward the maximum temperature difference, the first lever carries with it a second lever which is pivoted coaxially with the first lever. When the temperature difference decreases, the first lever moves in the reverse direction with the second lever being retained in its position and, after a preselected movement of the first lever relative to the second lever, a switch means is operated to initiate the defrosting operation, with the defrosting operation being terminated upon return of the first lever to the position of the second lever.

Synthetic papers and the method of making the same

Abstract: A SYNTHETIC PAPER OF A LAMINATED STRUCTURE CONSISTS OF A BASE LAYER MADE OF A BIAXIALLY ORIENTED PLASTIC FLIM CONTAINING 0-20% BY WEIGHT OF A FINE INORGANIC FILLER AND AT LEAST ONE PAPER-LIKE LAYER MADE OF A UNIAXIALLY ORIENTED PLASTIC FILM CONTAINING 0.5-65% BY WEIGHT OF A FINE INORGANIC FILLER. THIS SYNTHETIC PAPER IS MADE BY LAMINATING THE PAPER-LIKE LAYER IN NON-ORIENTED STATE ON THE BASE LAYER WHICH HAS BEEN PREVIOUSLY SUBJECTED TO UNIAXIAL DRAWING IN ITS LONGITUDINAL DIRECTION TO OBTAIN A COMPOSITE LAMINATED STRUCTURE, AND FURTHER DRAWING THE COMPOSITE STRUCTURE THUS OBTAINED IN ITS TRANSVERSE DIRECTION.

Polyester high polymer synthetic paper for writing

Abstract: SYNTHETIC WRITING SHEET MADE FROM A LINEAR POLYESTER AND A HIGH POLYMER HAVING A HIGHER GLASS TRANSITION POINT THAN THAT OF THE LINEAR POLYESTER BY MIXING THEM UNIFORMLY, FORMING THE POLYMER MIXTURE INTO FILM, AND STRETCHING THE FILM.

Radio angle measurement apparatus

Abstract: THIS INVENTION RELATES TO A RADIO ANGLE MEASUREMENT APPARATUS, WHICH IS APPLICABLE TO RADAR AND OTHER DETECTION SYSTEMS AND WHICH UTILIZES ANTENNA ARRAY SYSTEM(S) WITH RADIATOR ELEMENTS DISTRIBUTED AT SPACING LARGER THAN ONE HALF OF THE PROPAGATION WAVELENGTH. AT LEAST TWO VALUES OF D/A (WHERE D IS THE SAID RADIATOR ELEMENTS SPACING. A THE PROPAGATION WAVELENGTH) ARE EMPLOYED. THERE ARE, FURTHERMORE, A SET OF PHASE DISCRIMINATING MEANS, ONE FOR EACH ONE D/A VALUE, FOR DISCRIMINATING THE PHASE DIFFERENCE BETWEEN THE SIGNALS THAT ARE RECEIVED BY NEIGHBORING ELEMENTS OF ANTENNA ARRAYS, AND A PHASE-DIFFERENCE-TO-ANGLE CORRELATING MEANS FOR CORRELATING MEASURED SETS OF SAID PHASE DIFFERENCES TO THE INCIDENT ANGLE OF THE SIGNAL, MAKING USE OF THE EITHER THEORETICALLY OR EXPERIMENTALLY KNOWN RELATIONSHIPS BETWEEN SAID SETS OF PHASE DIFFERENCES AND THE INCIDENT ANGLE OF THE SIGNAL. IN THE ABOVE CORRELATION PROCESS, A CONSIDERATION OF THE ROLE PLAYED BY THE RESOLUTION OF PHASE DISCRIMINATION IS GIVEN, WHICH HELPS TO CONSTRUCT OPTIMAL EMBODIMENTS OF THE INVENTION, TO MAXIMIZE THE POSSIBILITY OF ACCURATE ANGLE MEASUREMENT. D R A W I N G

Acrylic resinous composition and process therefor from a 3-stage emulsion polymerization system

Abstract: AN ACRYLIC RESINOUS COMPOSITION CONSISTING ESSENTIALLY OF FIXED PROPORTIONS OF THREE POLYMER OR COPOLYMER COMPONENTS (A), (B) AND (C). COMPONENT (A) CONTAINS NO LESS THAN 60% OF ALKYL ACRYLATE AND EXHIBITS A 3-15 SWELLING DEGREE AND A NO LESS THAN 80% GEL CONTENT. COMPONENTS (B) AND (C) ARE PREPARED BY POLYMERIZING A MIXTURE OF 10-60% ALKYL ACRYLATE AND 40-90% ALKYL METHACRYLATE IN THE PRESENCE OF COMPONENT (A) AND AN ALKYL ACRYLATE MONOMER OR A MIXTURE CONTAINING NO LESS THAN 60% OF ALKYL METHACRYLATE IN THE PRESENCE OF COMPONENTS (A) AND (B), RESPECTIVELY. THE RESINOUS COMPOSITION IS SUITABLE FOR FILM POSSESSING AN ATTRACTIVE APPEARANCE AND AN EXCELLENT WEATHER RESISTANCE AND IMPACT STRENGTH.