Materials Research Activities


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Aug 18, 1927 

Polymerization of ethylene
Polymerization of ethylene is effected by C. Epner through the action of dark or silent electric discharge at ordinary or raised temperatures to produce a product containing both saturated and unsaturated hydrocarbons.
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Oct 1927 

First preparation of higher polypropylene glycols
P.A. Levene and A. Walti achieve the first preparation of the higher polypropylene glycols.
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Nov 08, 1927 

Airplane panel material
W.A. Wirz, British Celanese, Ltd., develops a process whereby perforated sheet-metal plates are placed between sheets of a cellulose acetate compound which penetrates the perforations of the metal after heat and pressure are applied to produce an airplane panel material.
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Dec 1927 

Demonstration that a lattice will diffract an electron beam
C. Davisson and L.H. Germer, Bell Telephone Laboratory, demonstrate that a lattice will diffract an electron beam, a discovery which greatly augments diffraction methods for the determination of lattice structure. Davisson later receives Nobel Prize for his work.
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Dec 27, 1927 

An adhesive suitable for use on metals
F.S. Malm describes an adhesive, consisting of rubber, rosin, rosin oil, and a fibrous filler including asbestos, which is suitable for use on metals.
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1928 

Chromium content in nickel-chromium compounds studied
C.J. Smithels, S.V. Williams, and J.W. Avery report that although oxidation resistance increased in nickel-chromium compounds as the chromium content increased from 20% to 30%, the strength at temperatures above 750 degrees C decreased with increasing chromium content.
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Feb 01, 1928 

Electrostatic forces of attraction between particles
In investigating the nature of cohesion, J.E. Lennard-Jones and B.M. Dent quantitatively analyze the electrostatic forces of attraction between particles.
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Mar 23, 1928 

Adhesion with vinyl compounds
J.F. Walsh and A.F. Caprio, Celluloid Corporation, place unpolymerized or partially polymerized vinyl compounds between two surfaces and produce adhesion by polymerizing with suitable catalysts.
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Apr 1928 

Differentiation between true hysteresis and elastic after-effect
L. Prandtl differentiates between true hysteresis and elastic after-effect, and also postulates the existence of what us now known as an edge or line of dislocation.
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Apr 01, 1928 

Duralumin sheet studied
Duralumin sheet quenched in hot water has greater susceptibility to intercrystalline attack than when quenched in cold water, according to research done by H.S. Rawdon.
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May 22, 1928 

Process for protecting duralumin alloys patented
E.H. Dix, Jr., Alcoa, patents a process for protecting alloys of the duralumin type against corrosion by coating the strong alloy sheet on each side with a layer of aluminum of high purity.
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Jul 03, 1928 

Nickel alloy for high-speed tools patented
R. Franks and B.E. Field, Haynes Stellite Company, receive a patent for a nickel alloy comtaining 3-5% aluminum, 3.5- 6% silicon, 5-12% tungsten, 6-12% zirconium, and 1% or less boron, described as suitable for high-speed tools.
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Jul 19, 1928 

Patent for modifying phenol-formaldehyde condensation products
I.G. Farben receives a patent for modifying phenol- formaldehyde condensation products with cellulose ethers to control hardening, as in the preparation of experimental laminated structures.
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Jul 27, 1928 

Synthetic resin containing ethers patented
W.E. Lawson, Imperial Chemical Industries, patents a synthetic resin containing ethers similar to the "glyptal" type prepared by heating polybasic carboxylic acids or anhydrides with ether alcohols to 175-250 degrees C to obtain complete estrification.
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Sep 11, 1928 

Nickel alloy for high-speed tools patented
R. Franks and B.E. Field, Haynes Stellite Company, receive a patent for a nickel alloy suitable for high-speed tools and containing 3-5% aluminum, 3.5-6% silicon, 5-12% tungsten, 6-12% titanium, and up to 1% boron.
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Sep 22, 1928 

Water-insoluble bonders process patented
I.G. Farben patents a process whereby water-insoluble or poorly soluble bonders such as ethyl cellulose are formed into an aqueous dispersion which is sprayed, kneaded, etc., and may then be dried and treated with substances capable of dissolving or swelling the binding agent.
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Nov 02, 1928 

Adhesives for safety glass manufactures
A process is developed by British Celanese, Ltd., in which phenol or creosol-formaldehyde resins are modified with cellulose esters, acetate, and nitrate, as well as a plasticizer. The process is useful in the preparation of adhesives for safety glass manufactures.
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Dec 01, 1928 

High-strength, low-alloy silicon-manganese steel
A.B. Kinzel, Union Carbide, introduces a high-strength, low- alloy silicon-manganese steel with improved susceptibility to heat treatment due to the addition of 1% carbon.
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1929 

New developments in nickel alloys
B.E. Field, Union Carbide, describes new developments in nickel-molybdenum-iron, nickel-silicon, and nickel-aluminum alloys of high corrosion resistance, the first two showing good high-temperature properties.
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1929 

Age-hardening of duralumin
M.L.V. Gaylor and G.D. Preston ascribe age-hardening of duralumin to the distortion of the space lattice caused by precipitation of highly dispersed particles. The precipitation involves the resection of the atoms of the dissolved metal from the lattice of the solid solution (possibly with formation of molecules) and the coagulation of the rejected atoms or molecules.
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