| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | High permeability metal casting plaster and method of making same | US592618 | 1990-10-03 | US5164004A | 1992-11-17 | Eugene J. Kurty |
| A high permeability metal casting plaster is used for production of high accuracy simulated castings for prototypes and any other plastermold castings. Methods are provided that create the high permeability metal casting plaster and mold. Also, a high permeability metal casting plaster is disclosed that uses control ground and screened .alpha.-hemihydrate gypsum such that an average of 100% of the particles have a diameter of no more than 590 .mu.m and an average of 97.3% have a diameter of less that 44 .mu.m, control ground and screened beta-hemihydrate gypsum such that an average of 99% of the particles have a diameter of no more than 270 .mu.m and at least an average of 70% have a diameter of less than 44 .mu.m, sucrose for protection against thermal shock, and a foaming agent. The ratio of .alpha.-hemihydrate gypsum to .beta.-hemihydrate gypsum is approximately 5:2. | ||||||
| 142 | Dry-etching method and plasma | US422205 | 1989-10-16 | US4948461A | 1990-08-14 | Dilip K. Chatterjee |
| An etching plasma containing a reactive fluorine-containing gas and atoms or ions of a heavy metal is particularly useful in a method of removing material from a substrate by reactive ion etching. | ||||||
| 143 | Gypsum composition for denture investment | US516331 | 1983-07-22 | US4526619A | 1985-07-02 | Nobukazu Ohi; Koji Ohno; Satoshi Tosaki |
| A gypsum composition for denture investment consists of 100 parts by weight of a mixture of 50-90 parts by weight of .alpha.-Gypsum hemihydrate (.alpha.-CaSO.sub.4.1/2H.sub.2 O) with 10-50 parts by weight of .beta.-Gypsum hemihydrate (.beta.-CaSO.sub.4.1/2H.sub.2 O) and 0.2-2.0 parts by weight of a soluble potassium salt. As the soluble potassium salt, use may be made of one or more of potassium sulfate, potassium chloride and potassium tartrate. The gypsum composition may further include 0.5-5.0 parts by weight of dihydrate gypsum. | ||||||
| 144 | Process for preparing olivine sand cores and molds | US342309 | 1982-01-25 | US4396431A | 1983-08-02 | Charles E. Seeney; John F. Kraemer; Janis Ingebrigtsen |
| An inorganic cement binder for a foundry aggregate comprising, in combination, potassium olivine phosphate and as a hardener therefor, water, aqueous sodium silicate, or aqueous phosphoric acid. | ||||||
| 145 | Metal silico-phosphate binders and foundry shapes produced therefrom | US342308 | 1982-01-25 | US4390370A | 1983-06-28 | Charles E. Seeney |
| A binder and a hardener therefor for a foundry aggregate. The binder is a resin obtained by reacting phosphoric acid with a mineral silicate. The hardener is a linear alkali metal polyphosphate, ammonium polyphosphate, a source of polyvalent cations, potassium olivine phosphate and other metal silico-phosphates or aluminum dihydrogen phosphate or mixtures thereof. A process for manufacturing molds and cores from a mixture of said binder and hardener and foundry aggregate. | ||||||
| 146 | High temperature resistant coating composition | US126968 | 1980-03-03 | US4304605A | 1981-12-08 | Richard C. Keibler |
| A protective coating composition suitable for refractory brick or refractory linings and materials exposed or subjected to high temperatures is provided. The composition comprises about 40 to 95 wt. % zirconium silicate, up to 30 wt. % sodium silicate, 1 to 10 wt. % mullite, up to about 5 wt. % magnesium silicate, 1 to 10 wt. % aluminum hydrate, the remainder water, the composition capable of withstanding temperatures up to 4,000.degree. F. | ||||||
| 147 | Molding sand mixture for the manufacture of molds and cores | US954575 | 1978-10-25 | US4212677A | 1980-07-15 | Jury G. Khmelev; Gennady P. Kim; Dmitry Y. Zhinkin; Solomanida I. Kleschevnikova |
| A molding sand mixture containing a filler, a binder in the form of a solution of hydrolyzed ethylsilicate and a curing agent; as the latter use is made of an organic solution of a polyorganosilazane of the formula:{(R.sub.2 SiNH).sub.n [R'Si(NH).sub.1,5 ].sub.m }.sub.k,wherein R is CH.sub.3, R' is CH.sub.3 or C.sub.6 H.sub.5, n=1, k=4-10, m=1-3.The components are taken in the following proportions in percent by weight:______________________________________ solution of hydrolyzed ethylsilicate 10 to 35 organic solution of polyorganosilazane 0.2 to 2.0 filler the balance. ______________________________________ The curing agent according to the present invention gives a high quality of the surface finish of the final castings. | ||||||
| 148 | Refractory laminate based on negative sol or silicate and positive sol | US33868973 | 1973-03-07 | US3878034A | 1975-04-15 | BEVER JAMES N; MOORE JR EARL P; RUSHER ROBERT L |
| Refractory laminates and refractory laminate articles are provided which comprise alternate layers of (1) a gel of negatively charged colloidal particles of an inorganic substance or an alkaline ionic silicate and (2) a gel of positively charged colloidal particles of an inorganic substance.
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| 149 | Refractory laminate based on positive sols and organic or inorganic bases | US3752689D | 1971-06-01 | US3752689A | 1973-08-14 | MOORE E |
| A RAPID PROCESS FOR FORMING A REFRACTORY LAMINATE ON THE SURFACE OF A SUPPORT STRUCTURE WHICH COMPRISES DIPPING THE STRUCTURE INTO A BATH COMPRISING A SOL OF POSITIVELY CHARGED COLLOIDAL PARTICLES OF AN INORGANIC SUBSTANCE TO FORM A COATING ON THE SURFACE, CONTACTING THE COATED SURFACE WITH A SOLUTION OR DISPERSION OF AN ORGANIC OR INORGANIC BASE TO FIRMLY SET THE COATING, AND REMOVING EXCESS SETTING AGENT SOLUTION OR DISPERSION FROM THE COATED SURFACE. THIS PROCEDURE IS REPEATED UNTIL A LAMINATE OF THE DESIRED THICKNESS IS BUILT UP ON THE SURFACE. THIS TECHNIQUE MAKES IT POSSIBLE TO SUCCESSIVELY APPLY AND SET COATINGS IN VERY SHORT TIMES WITHOUT INTERMEDIATE DRYING AND WITHOUT SLOUGHING OF COATS. THE PROCESS IS PARTICULARLY SUITED FOR MAKING EXPENDABLE REFRACTORY SHELL MOLDS FOR PRECISION INVESTEMNT CASTING OF METALS BY THE SO-CALLED "LOST-WAX" TECHNIQUE.
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| 150 | Refractory laminate based on positive sols and monofunctional organic acids and salts | US3752681D | 1971-06-01 | US3752681A | 1973-08-14 | MOORE E |
| A RAPID PROCESS FOR FORMING A REFRACTORY LAMINATE ON THE SURFACE OF A SUPPORT STRUCTURE WHICH COMPRISES DIPPING THE STRUCTURE INTO A BATH COMPRISING A SOL OF POSITIVELY CHARGED COLLOIDAL PARTICLES TO FORM A COATING ON THE SURFACE. CONTACTING THE COATED SURFACE WITH A SOLUTION OR DISPERSION OF A MONOFUNCTIONAL ORGANIC ACID OR SALT TO FIRMLY SET THE COATING, AND REMOVING EXCESS SETTING AGENT SOLUTION OR DISPERSION FROM THE COATED SURFACE. THIS PROCEDURE IS REPEATED UNTIL A LAMINATE OF THE DESIRED THICKNESS IS BUILT UP ON THE SURFACE. THIS TECHNIQUE MAKES IT POSSIBLE TO SUCCESSIVELY APPLY AND SET COATING IN VERY SHORT TIMES WITHOUT INTERMEDIATE DRYING AND WITHOUT SLOUGHING OF COATS. THE PROCESS IS PARTICULARLY SUITED FOR MAKING EXPENABLE REFRACTORY SHELL MOLDS FOR PRECISION INVESTMENT CASTING OF METALS BY THE SO-CALLED "LOST-WAX" TECHNIQUE.
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| 151 | Plaster mold compositions | US3748290D | 1972-02-28 | US3748290A | 1973-07-24 | REINGEN W |
| A COMPOSITION FOR THE MANUFACTURE OF PATTERNS AND MOLDS, PARTICULARLY CERAMIC MOLDS COMPRISING TWO PRINCIPAL CONSTITUENTS: (A) A MIXTURE COMPRISING AN A- AND/OR B-SEMIHYDRATE OF GYPSUM; SODIUM POTASSIUM TARTRATE TO REDUCE EXPANSION AND; CALCIUM HYDROGEN PHOSPHATE TO PROMOTE HARDENING AND CAPILLARITY; AND (B) A MODIFIED MELAMINE FORMALDEHYDE RESIN, E.G., A MELAMINE FORMALDEHYDE RESIN HAVING AT LEAST ONE OR MORE AMINO GROUPS SUBSTITUTED BY A SULFITE OR SULFONIC-ACID GROUP. CONVENTIONAL RETARDERS, ACCELERATORS AND A SECOND HARDENING AGENT SUCH AS FINELYGROUND ANHYDROUS ALUMINUM SULFATE MAY BE PRESENT IN THE MIXTURE. THE COMPOSITION HAS REDUCED EXPANSION ON SETTING WHILE HAVING INCREASED STRENGTH, LIFETIME, EXCELLENT CAPILLARITY AND GAS PERMEABILITY.
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| 152 | Bonded plaster of paris products and methods of making same | US23905862 | 1962-11-20 | US3191597A | 1965-06-29 | SMITH DAVID F |
| 153 | Glass reinforced gypsum composition and process of preparation | US47798554 | 1954-12-28 | US2970127A | 1961-01-31 | GAMES SLAYTER; SHANNON RICHARD F |
| 154 | Plaster mold for casting readily oxidizable metals | US54301555 | 1955-10-26 | US2802747A | 1957-08-13 | FISCHER EDWARD F |
| 155 | Expansion control of molds and the like | US50642543 | 1943-10-15 | US2400905A | 1946-05-28 | BEAN XARIFA L |
| 156 | Dental investment material | US13365437 | 1937-03-29 | US2222781A | 1940-11-26 | MOORE THOMAS E |
| 157 | Duplicating composition | US1321760D | US1321760A | 1919-11-11 | ||
| 158 | Composition for making dental impressions. | US10440316 | 1916-06-19 | US1222773A | 1917-04-17 | KREUTZMANN HERBERT H |
| 159 | Composition of matter for the treating of molding-sand. | US1912702747 | 1912-06-10 | US1064713A | 1913-06-17 | COUPE THOMAS E |
| 160 | Pattern-plate. | US1910587238 | 1910-10-15 | US985967A | 1911-03-07 | BAYER JOHN |
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