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公开(公告)号：CA1157273A
公开(公告)日：1983-11-22
申请号：CA384454
申请日：1981-08-24
Applicant: CORNING GLASS WORKS
Inventor： BEALL GEORGE H , PIERSON JOSEPH E
Abstract: The present invention is concerned with glass-ceramic articles which are extremely resistant to impact and spontaneous delayed breakage, are capable of being sawn with a diamond wheel to a depth of over one-third the cross section thereof without breakage, and exhibit modulus of rupture values of at least 150,000 psi. The articles consist of a body portion and an integral surface compression layer having a depth of at least 0.005". The body portion consists essentially, in weight percent, of about 8-13% Na2O, 7-13% K2O, 30-36% Al2O3, 35-43% SiO2, and 6-10% RO2, wherein RO2 consists of 6-10% TiO2 and 0-4% ZrO2, wherein the molar ratio Al2O3:SiO2 is >0.5 but 1:3 but
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公开(公告)号：CA1103973A
公开(公告)日：1981-06-30
申请号：CA290516
申请日：1977-11-09
Applicant: CORNING GLASS WORKS
Inventor： PIERSON JOSEPH E , STOOKEY STANLEY D
Abstract: Pierson-Stockey 8-63 PHOTOSENSITIVE GLASSES This invention is concerned with the preparation of glass articles wherein a portion thereof is opaque and another portion thereof is transparent and, optionally, integrally colored. The opaque portion is produced through the thermal reduction and precipitation of a controlled number of submicroscopic particles of at least one metal selected from the group of copper, gold, palladium, platinum, and silver with the subsequent nucleation and growth of NaF crystals on said metal particles to a size sufficient to scatter visible light. The transparent portion is developed through the photoreduction of at least one photosensitive metal selected from the group of copper, gold, and silver to produce additional submicroscopic particles of said metals upon which NaF crystals are nucleated and grown, but which remain in a size too small to scatter visible light. The presence of copper or gold alone gives rise to a single color, whereas the inclusion of silver permits a full spectrum of colors to be produced. Where silver is present, microcrystals of NaF containing a silver halide selected from the group of AgCl, AgBr, and AgI are grown upon which a coating of metallic silver is developed or within which metallic silver is deposited. The method involves sequences of exposures of the glass to high energy or actinic radiation followed by heat treatments.
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公开(公告)号：CA1084710A
公开(公告)日：1980-09-02
申请号：CA250626
申请日：1976-04-21
Applicant: CORNING GLASS WORKS
Inventor： MEISSNER HELMUTH E , PIERSON JOSEPH E , SHOUP ROBERT D , STOOKEY STANLEY D
Abstract: The present invention relates to the production and chemical treatment of sodium and/or potassium hydrosilicate glasses containing about 5-50% by weight water within the glass structure, wherein the Na+ and/or K+ ions are capable of being partially completely replaced, on an electrolytically equivalent basis, by protons and/or other monovalent and polyvalent cations species, to make glass articles whose alkali metal oxide content is substantially diminished or completely removed. Such glass articles can be either completely dense, or microporous, with pores ranging down to molecular size. Moreover, the chemical compositions of such microporous glasses can be further altered to include many other chemical species including polyvalent cations, anions and neutral molecular species, both organic and inorganic, and including complex ions such as metal amine complexes, where such species are capable of being sorbed on the porous glass by physical or chemical forces or both. The instant invention provides means for replacing part or all of the Na+ and/or K+ ions in an alkali silicate hydrosilicate amorphous body either with protons, or with protons plus other monovalent or polyvalent cations, in the nondestructive manner by reaction in aqueous solutions. In addition, it provides means for incorporating many other chemical species into the ion-exchange microporous body at low temperature, by sorption from solutions, either aqueous or nonaqueous. These latter species are not necessarily cations. The processes of the invention make possible the alteration of the chemical composition of alkali hydrosilicate body to any of a wide variety of other glass compositions having better chemical durability and other useful glass properties.
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Patent Agency Ranking
公开(公告)号：CA1322277C
公开(公告)日：1993-09-21
申请号：CA558441
申请日：1988-02-09
Applicant: CORNING GLASS WORKS
Inventor： BEALL GEORGE H , PIERSON JOSEPH E , STOOKEY STANLEY D
Abstract: There is disclosed a lithium aluminosilicate glass body encased within, and integral with, a thin, compressive, semicrystalline layer containing beta-eucryptite and/or beta-quartz solid solution crystals, and a method of producing such body. The layer has a substantially lower thermal coefficient of expansion than the glass, but has the same chemical composition as the glass. That composition, in percent by weight on a calculated oxide basis is 55-67% SiO2, 5.0-7.5% Li20, 22-28% A1203, 0-2% Na2O and 0-10% ZnO, the molar ratio of R20+R0 to A1203 being greater than one. Controlled crystallization procedure is described whereby the crystallized layer can be produced in a relatively short time.
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公开(公告)号：CA1279993C
公开(公告)日：1991-02-12
申请号：CA508874
申请日：1986-05-12
Applicant: CORNING GLASS WORKS
Inventor： PIERSON JOSEPH E , STOOKEY STANLEY D
Abstract: This invention is directed to the production of unitary, transparent glass articles demonstrating exceptionally high flexural and impact strengths composed of an interior portion and an integral surface compression layer. The articles are prepared by contacting glass bodies consisting essentially, in mole percent, of 14-24% R2O, wherein R2O consists of 0-5% Li2O, 0-5% K2O, and the remainder Na2O, 17-21% Al2O3, 45-60% SiO2, 3-6% TiO2 and/or ZrO2, and 0-2% P2O5, the sum of those components constituting at least 85% of the total composition, at a temperature above the annealing point of the glass with a source of Li+ ions to replace at least part of the Na+ ions and, if present, K+ ions in a surface layer with a corresponding amount of Li+ ions and to react the Li+ ions with Al2O3 and SiO2 in the surface layer to form crystallites of beta-quartz solid solution nucleated by the TiO2 and/or ZrO2.
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公开(公告)号：CA1058877A
公开(公告)日：1979-07-24
申请号：CA210574
申请日：1974-10-02
Applicant: CORNING GLASS WORKS
Inventor： PIERSON JOSEPH E , TARCZA WALTER H
IPC: C03B19/06 , C03C3/076 , C03C3/083 , C03C3/105 , C03C4/00 , C03C12/00 , C03C17/02 , C03C23/00 , C03C1/02
Abstract: METHOD FOR HYDRATING SILICATE GLASSES The present invention is concerned with a single-step process for hydrating alkali metal-containing silicate glasses starting with such fine-dimensioned forms as powders, granules, flakes, fibers, and thin sheets. The process permits the precise control of the quantity of water taken into the glass structure and, where the water content in the glass is held within about 1-25% by weight, the hydrated product of the above-cited powders, granules, etc., can be thermoplastically formed into sound bulk articles. A layer of the anhydrous powders can be applied to a substrate and then hydrated in situ to form glassy paints and coatings.
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7.发明专利
公开(公告)号：CA1078657A
公开(公告)日：1980-06-03
申请号：CA266171
申请日：1976-11-19
Applicant: CORNING GLASS WORKS
Inventor： PIERSON JOSEPH E , STOOKEY STANLEY D
IPC: C03C3/11 , C03C3/112 , C03C4/04 , C03C8/18 , C03C21/00 , C03C23/00 , C03C3/04 , C03C3/26 , C03B23/20
Abstract: PHOTOSENSITIVE COLORED GLASSES The instant invention relates to photosensitive glasses, i.e., glasses which, after an exposure to high energy or actinic radiations, can be heat treated in a certain manner to develop a colored transparent article, or which can be thermally opacified to produce a colored opal glass. More particularly, the instant invention is directed to alkali metal halide silver halide-containing photosensitive glasses which, through a unique sequence of shortwave radiation exposures and heat treatments, exhibit the total range of colors seen in the visible spectrum either in the transparent or in the opacified state and in three dimensions. The base glass composition can be varied widely, but the presence of silver, alkali metal oxide, fluorine, at least one of the group consisting of chlorine, bromine, and iodine, and, where ultra-violet radiations comprise the actinic radiations, cerium oxide is required. Multi-colored photographs and other unique decorative effects can be imparted into such glasses. Where desired, polarization effects can be secured in the glasses.
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公开(公告)号：CA1057955A
公开(公告)日：1979-07-10
申请号：CA221212
申请日：1975-03-04
Applicant: CORNING GLASS WORKS
Inventor： BARTHOLOMEW ROGER F , CAMPBELL LARRY E , LEWEK STANLEY S , PIERSON JOSEPH E , STOOKEY STANLEY D
Abstract: HYDRATION OF SILICATE GLASSES IN AQUEOUS SOLUTIONS The present invention relates to a method for hydrating finedimensioned alkali metal-containing silicate glass bodies so as to impart the property of thermoplasticity thereto. More particularly, this invention contemplates contacting fine-dimensioned alkali metal silicate glass bodies with an aqueous solution at elevated temperatures and pressures to develop at least a surface layer thereon having a water content ranging up to about 36% by weight, said aqueous solution having a pH less than 6 as measured at room temperature. The hydrated bodies can approach certain properties of highpolymer organic plastics and exhibit the capability of being thermoplastically formed at relatively low temperatures.
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