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| Number | Title | Issue Date |
| 6398922 | Photochemical gas-liquid process for halogenating alkylbenzenes The invention provides a process for carrying out a photochemical gas-liquid process for halogenating alkylbenzenes, the process being carried out in a photochemical gas-liquid reactor comprising a vessel, a central source of radiation, a gas distributor,... | 06/04/2002 |
| 5854370 | Epoxy resin stilbenes and process for producing the same by photoisomerization The invention provides a cis-stilbene type epoxy resin having lower melting point and lower viscosity than the trans-stilbene type epoxy resin hitherto known. The stilbene type epoxy resin has a cis-isomer content of essentially 100%, or in the alternativ... | 12/29/1998 |
| 5841004 | 3-substituted-, ଲ-dibromoethylbenzene and process for preparing the same A novel 3-substituted ,ଲ-dibromoethylbenzene of formula (I): ##STR1## wherein X represents a halogen atom or a trihalomethyl group, which is useful as an intermediate for pharmaceuticals or agricultural chemicals, is prepared by a simple... | 11/24/1998 |
| 5514254 | Procedure for the photochlorination of alkyl-aromatic compounds An alkyl-aromatic compound is selectively photochlorinated in the side chain in a cyclic reaction system wherein said compound is continuously circulated between a container and photochlorination reactor. The compound is partially chlorinated after each passag... | 05/07/1996 |
| 5505830 | Biodegradable compostable plastic and method of making the same Electron beam radiation of resin blends and compounds comprises in major part by weight of cellulose acetate accelerates the rate and increases the degree of biodegradation of the compounds and products made therefrom, and renders the same fully compostab... | 04/09/1996 |
| 5488119 | Polymerisable photochromic naphthacenediones, polymers of these monomers, process for their preparation and the use thereof Compounds of formulae I and II ##STR1## wherein D is H or --OR wherein R is phenyl and R1 to R4 are H or a substituent such as phenylthio, and one of the substituents R1, R2, R3 and R4... | 01/30/1996 |
| 5378333 | Halogenated polycarboxycubanes The disclosure describes photochemical synthesis of halogenated polycarboxycubanes from simple carboxycubanes and an oxalyl halide. It is possible to synthesize 6-Chloro-1,2,4,7-tetracarbomethoxycubane and 2-Chloro-1,3,5,7-tetracarbomethoxycubane. Photoch... | 01/03/1995 |
| 5326440 | Photooxidation of hydrocarbons Photooxidation of cyclohexene or tetralin is effected preferably in the presence of a photosensitizer such as an aliphatic ketone by light of wave length of about 2000 Å-7000 Å to form hydroperoxide, alcohol, and ketone products in good photoconversion ... | 07/05/1994 |
| 5279719 | Method for chlorination of methylated aromatic compounds A process for chlorination of methylated aromatic compounds in a titanium tetrachloride is disclosed. The ring chlorination is first carried out by reacting said methylated aromatic compounds with chlorine gas under reduced light conditions, and then the ... | 01/18/1994 |
| 5017718 | Process for preparing polyfluoroalkyl-substituted compounds A process for preparing a perfluoroalkyl-substituted compound is disclosed. The process comprises reacting a halopolyfluoroalkane having 1 to 20 carbon atoms with a compound selected from the group consisting of (1) a substituted or unsubstituted ethylene... | 05/21/1991 |
| 4456512 | Photochemical reactor and method Photochemical reactions are carried out by passing the fluid to be irradiated through a plurality of capillaries, each of which is surrounded by an actinic-radiation emitting plasma; the capillaries being transparent to the radiation. By banding the capil... | 06/26/1984 |
| 4188273 | Process for preparing novel thin films A thin film of less than 300 microns in thickness can be obtained by crosslinking a surfactant with plasma or radiation. This thin film is as high in strength as an ordinary plastic film, and is usable as a substance-separating film, a substance-protectin... | 02/12/1980 |
| 3994952 | Anti-tricyclo[6.4.0.0.2,7 ]1,4,7,10-tetracarboxy-2,5,8,11-tetrahydroxy-dodeca-4,10-diene and esters thereof, a process for their preparation, and their use in preparing linear polyesters Compounds of formula I ##SPC1## wherein R denotes hydrogen or an aliphatic or aromatic radical. These compounds are prepared by irradiation of succinylsuccinic acid or diesters thereof, in the crystalline state, with UV light rays or with γ-radiatio... | 11/30/1976 |
| 3943933 | Suture with radiation degradation near needle-suture junction A needle-suture combination is provided in which the suture has a radiation-weakened segment adjacent to its attachment to the needle. The radiation-weakened segment permits a surgeon to separate the needle from the suture by a sharp tug.... | 03/16/1976 |
