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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 4328368 | Method for reclaiming polyurethane foam A method if provided for continuously hydrolyzing urethane foam in a vertically oriented hydrolysis reactor. In a preferred practice, a bed of foam particles is formed in the reactor. Superheated steam is flowed continuously upward through the bed at a te... | 05/04/1982 |
| 4323495 | Novel branched-chain monoalcohols and derivatives thereof, lubricant compositions for polymers and wax compositions in which these novel products are incorporated Novel branched-chain monoalcohols and derivatives thereof are disclosed. Such derivatives are selected from the group consisting of (a) esters of aromatic, aliphatic or cycloaliphatic acids having at least 2 carbon atoms and 1, 2 or 3 carboxyl groups; (b) uret... | 04/06/1982 |
| 4316992 | Process for polyol recovery from polyurethane foam comprising alcohol and steam hydrolysis Polyol is recovered from polyether based polyurethane foam by a process which includes reacting the foam with an alcohol, preferably a glycol ether, whose boiling point is between 225° C. and 280° C. at a temperature between 185° C. and 220° C. under ... | 02/23/1982 |
| 4313004 | Process for the reduction of dicyanoglycols A method for preparing a diaminoalkoxy compound of the formula: ##STR1## wherein m and n are both numbers from 0 to about 25 and m+n equals at least 1, R1 is selected from H and a lower alkyl group having from 1 to about 4 carbon atoms; an... | 01/26/1982 |
| 4281197 | Hydrolytic decomposition method Porous polyurethane solids such as open cell polyurethane foams are rapidly heated and hydrolytically decomposed into separate polyol component and diamine component by contacting the porous solids with saturated steam in a heated vacuum chamber. Separati... | 07/28/1981 |
| 4228272 | Method of catalytically preparing tetrahydrofuran/alkylene oxide polymerizates using a montmorillonite clay as the catalyst A polymerizate of THF and an alkylene oxide is prepared by catalytic polymerization, using as a catalyst an acid-activated montmorillonite clay having a pore volume of 0.4-0.8 cubic centimeter per gram, a surface area of 220-260 square meters per gram and... | 10/14/1980 |
| 4223164 | Ethoxylation with strontium bases Basic compounds of strontium catalyzed the ethoxylation of alcohols in the presence of phenol or alkylphenol co-catalyst. Strontium-produced ethoxylates have sharper ethylene oxide distributions, lower free alcohol, lower pour points, and better detergenc... | 09/16/1980 |
| 4199647 | Fiber lubricants derived from polyethoxylated and polyoxyalkylated reaction products of an alpha-olefin epoxide and a fatty alcohol Lubricants and processing aids for thermoplastic synthetic fibers, particularly polyester and nylon fibers are disclosed together with processes therefor. Said lubricants comprise compounds having the structural formula: ##STR1## in which R and ... | 04/22/1980 |
| 4196148 | Hydrolysis of polyurethane foams A method for hydrolysis of polyurethane foam and recovery of diamines and polyethers (or polyesters) from the hydrolysate carried out near atmospheric pressure and temperatures above about 185° C. in a reaction zone containing water vapor which comprises... | 04/01/1980 |
| 4169959 | Process for the preparation of ethylene glycol-dimethylether (dimethyl glycol) A process for the preparation of dimethyl glycol by the hydrogenolysis of methylglycol formal in the presence of catalysts which consist of oxide mixtures of silicon and aluminum and/or of rare earths, as well as of metallic nickel and/or cobalt and/or co... | 10/02/1979 |
| 4146736 | Process for the manufacture of ethers Oxalkylene groups of oxacycloalkanes are inserted into chain-type ethers by reacting the latter with the oxacycloalkanes in the presence of Lewis acids. The ethers or ether mixtures obtained can be used for many purposes owing to their hydrophilic-hydroph... | 03/27/1979 |
| 4143072 | Process for the purification of polyethers using a tubular coil evaporator This invention relates to a process for the removal of troublesome secondary products, particularly small quantities of water, solvents, low molecular weight glycols, and pungent-smelling substances, from polyethers by means of a tubular coil evaporator.... | 03/06/1979 |
| 4139567 | Method for preparing copolyether glycols Copolyether glycols are prepared by copolymerizing alkylene oxides or cyclic acetals and tetrahydrofuran, using (1) a polymeric catalyst which contains sulfonic acid groups; and (2) a chain terminator which is water or an alkanediol.... | 02/13/1979 |
| 4127513 | Method for preparing polyether glycols The production of undesirable oligomeric cyclic ethers in the preparation of polyether glycols is reduced by using as a catalyst an acid-activated montmorillonite clay which contains, per gram, 0.1 to 0.9 milliequivalent of hydrogen ions having pKa | 11/28/1978 |
| 4122247 | Process for the polymerization of cyclic diorganopolysiloxanes with cation-complex catalysts Diorganopolysiloxane homo- and copolymers having a viscosity from 50 to 200,000,000 centipoise at 25° C, are produced by (a) reacting a composition of (i) a first cyclic siloxane having 3 to 6 units alone or admixed with (ii) a second cyclic siloxane hav... | 10/24/1978 |
| 4118326 | Spin-finish lubricating method As a spin-finish lubricant for processing synthetic fibers, a nonionic polyalkoxylate surfactant of the fatty-ether alkoxylate, fatty-ester alkoxylate, or block or heteric ethylene oxide/propylene oxide type is made which contains a substantial proportion... | 10/03/1978 |
| 4116887 | Antionic polymerization A novel process for polymerization or copolymerization of monomers is described, according to which the reaction is carried out in the presence of an anionic initiator and a macroheterocyclic complexing agent of formula ##STR1## in which: EACH R... | 09/26/1978 |
| 4112231 | Process for the condensation of epoxides with organic compounds having an active hydrogen A process is provided for the condensation of epoxides with organic compounds having an active hydrogen atom, such as alcohols, polyols, and amines, in the presence of a neutral inorganic salt selected from the group consisting of sodium fluoborate, magne... | 09/05/1978 |
| 4081257 | Freeze regeneration of glycol solutions loaded with water Aqueous glycol solutions, used for example, in the de-icing of heat exchange surfaces used in defogging systems, are regenerated by freeze crystallization, the ice being separated with relatively little loss of glycol.... | 03/28/1978 |
| 4064182 | Preparation of secondary alkanol alkoxylates An improved process for preparing high mole secondary alkanol alkoxylates by the reaction of low mole secondary alkanol alkoxylates with an alkylene oxide in the presence of caustic is disclosed. The improvement comprises use of a hydrogen-treated low mol... | 12/20/1977 |
| 4061684 | Highly branched polyether polyols of high molecular weight Highly branched polyether polyols of high molecular weight (such as over 12,000) are made by coupling an alkoxylated polyglycerol, by reaction of the sodium alcoholate of the oxyalkylated polyglycerol with a dibenzenesulfo or ditoluenesulfo ester of a dio... | 12/06/1977 |
| 4032582 | Method of obtaining primary alcohols with straight chains from C4 hydrocarbon cuts A method of preparing primary alcohols, virtually all with a straight chain, in which the molecular proportions are distributed on both sides of a maximum centered at 8 to 16 carbon atoms. It comprises: reaction between a C4 hydrocarbon cut and acti... | 06/28/1977 |
| 4011313 | Medicament preparations A pharmaceutical preparation having a minor amount of a tetracycline medicament, and a major amount of a dialkylated mono- or poly-alkylene glycol vehicle therefor, and, optionally, a minor amount of one or more antioxidants for the dialkylated glycol veh... | 03/08/1977 |
| 4001141 | Cosmetic emulsifiers An emulsifying and peptizing agent having the formula wherein R is a lipophilic hydrocarbon residue of a member selected from the group consisting of alcohols, sterols and their mixtures derived from a member selected from the group consisting of (a) hydrogena... | 01/04/1977 |
| 3972949 | Process for preparing glycol dimethyl ethers Glycol dimethyl ethers of the formula CH3 O(CH2 CH2 O)n CH3, wherein n is an integer of from 1 to 8 are prepared by reacting the corresponding glycol monomethyl ether formal with hydrogen under a pres... | 08/03/1976 |
| 3939213 | Preparation of polyalkoxyalkyl compounds Polyalkoxyalkyl compounds are prepared from the treatment of an olefinic compound with an epoxide in an atmosphere of hydrogen in the presence of a catalyst comprising a transition metal-containing compound.... | 02/17/1976 |
| 3932532 | Ethers of polyglycerol Ethers of polyglycerols and an improved method of preparing said ethers are disclosed. The ethers are prepared by reacting a purified polyglycerol with an alpha olefin epoxide in the presence of an alkali metal alkoxide catalyst.... | 01/13/1976 |
