Patents
Patents for C07D 323 - Heterocyclic compounds containing more than two oxygen atoms as the only ring hetero atoms (1,581)
04/1988
04/19/1988US4739081 New crown ether derivatives, process for the preparation thereof and ion-selective membrane electroes comprising the same
04/12/1988CA1235121A1 Process for the preparation of vinyl carbamates and novel vinyl carbamates
03/1988
03/23/1988EP0260680A2 Improved process for the production of macrocyclic esters by the depolymerization of polyesters
01/1988
01/14/1988DE3621722A1 Process for isolating trioxane from aqueous trioxane solutions by means of separation by distillation
12/1987
12/08/1987US4711853 Method of detecting potassium ions using trifluoromethyl-substituted chromogenic crown ethers
11/1987
11/24/1987US4709058 Process for the production of macrocyclic esters by the depolymerization of polyesters
10/1987
10/27/1987US4703129 Trimerization of formaldehyde; cationic ion exchange resin catalyst bed
10/20/1987US4701538 Composition comprising bicyclic carbonate oligomer
10/20/1987US4701516 Lower glass transition temperature; molding materials
09/1987
09/29/1987US4696998 Cyclic heterocarbonates and methods for their preparation and use
09/29/1987US4696997 Cyclic carbonate oligomer composition
08/1987
08/05/1987EP0230608A1 Modified co-polyester-carbonate resins
07/1987
07/15/1987EP0228456A1 Ionophores and ion-selective membranes containing the same
06/1987
06/02/1987CA1222438A1 Unified test means for ion determination
04/1987
04/28/1987US4661384 Organometallic compound with a guest-host ineterrelationship
04/28/1987CA1221198A1 Alkali metal ion-selective compositions and elements and a method of using same
04/07/1987US4656295 Extraction with saturated hydrocarbons
04/01/1987EP0216731A1 Macrocyclic antibiotics
03/1987
03/24/1987US4652399 Novel polyacrylic esters bearing pendant macrocyclic ethers and electrically conducting compositions comprised thereof
03/17/1987US4650846 Metal ion complexing
02/1987
02/24/1987US4645744 Unified test means for ion determination
02/04/1987EP0210233A1 Brain derivable polypeptide factors and antibodies
01/1987
01/15/1987WO1987000168A2 Ionophores and ion-selective membranes containing the same
01/15/1987DE3524841A1 Antineoplastic platinum(IV) crown ether complex compounds, processes for their preparation and medicaments containing them
12/1986
12/23/1986US4631291 Sequestering agents for iron and other metals in humans
12/23/1986US4631119 Reversible, electrochemically-switched lariat ethers
12/09/1986CA1215062A1 Crown ether compounds, process for the preparation of the crown ether complex forming agents and ion- selective membrane electrodes containing the same
09/1986
09/09/1986US4611066 Bryostatins 4 to 8
08/1986
08/19/1986US4607110 Novel polyacrylic esters bearing pendant macrocyclic ethers and electrically conducting compositions comprised thereof
07/1986
07/31/1986WO1986004239A1 Brain derivable polypeptide factors and antibodies
07/16/1986EP0187261A1 Process for the continuous preparation of trioxane
06/1986
06/10/1986US4594434 Process for the depolymerization of polyesters using dawsonite as the catalyst
06/04/1986EP0183538A2 2,2' -Isopropylidine bis (tetrahydrofuran) and method of preparation
05/1986
05/27/1986US4591602 Ozonide esters and topical compositions containing same
05/20/1986US4590005 Some macrocyclic compounds and their preparation
04/1986
04/16/1986EP0178048A1 Bryostatins
04/02/1986EP0176077A1 Method for the isolation of macrocyclic polyethers
04/02/1986EP0176076A1 Method for the preparation of crown ethers
03/1986
03/18/1986US4577035 2,2'-Isopropylidine bis(tetrahydrofuran)
03/04/1986US4574158 Acetal purification using phase transfer catalysts
02/1986
02/19/1986EP0171401A1 Platinum and crown ether complexes with antineoplastic activity and drug containing them
02/11/1986US4570004 Perfluoro crown ethers
01/1986
01/15/1986EP0167784A1 Process for the recovery of trioxan from aqueous solutions by high-pressure extraction
01/14/1986US4564690 Macrocyclic compounds
01/10/1986CN85102097A Method of synthesising crown ethers
01/07/1986US4563536 Method for synthesizing trioxane
01/02/1986EP0166360A2 Process for activating substrates for electroless plating
12/1985
12/31/1985US4562272 Process for preparing cyclic polyethers
12/24/1985US4560774 Antineoplastic agents
11/1985
11/27/1985EP0162252A1 Process for the production of pure trixane
11/19/1985US4554362 Ion selective membranes
08/1985
08/27/1985CA1192612A1 Potassium ion-selective membrane electrode
07/1985
07/23/1985US4531007 Crown ether compounds, process for the preparation of the crown ether complex forming agents and ion-selective membrane electrodes containing the same
07/18/1985WO1985003078A1 Platinum and crown ether complexes with antineoplastic activity and drug containing them
07/17/1985EP0148293A1 Process for the preparation of trioxane
06/1985
06/26/1985EP0145834A1 Ion-selective compositions containing certain crown ethers
06/18/1985US4523994 Bis-crown-ether derivatives and their use
06/05/1985EP0143564A2 Crown ether Derivatives
04/1985
04/23/1985US4513144 Acetal purification with superoxides
03/1985
03/12/1985US4504670 Process for the continuous manufacture of trioxane
03/12/1985US4504368 Alkali metal ion-selective compositions and elements and a method of using same
03/06/1985EP0133669A2 Process for the preparation of trioxan from commercial aqueous formaldehyde solutions
02/1985
02/12/1985US4499288 Process for the production of macrocyclic esters and lactones utilizing double metal salt catalysts
02/12/1985US4499070 Hair dyes
01/1985
01/15/1985US4493752 Separation of triethylamine and tioxane
11/1984
11/21/1984EP0125555A2 Unified test means for ion determination
10/1984
10/30/1984CA1176829A1 Hemispherands in ion-selective compositions
10/02/1984US4474963 Phase transfer catalysts
09/1984
09/04/1984CA1173827A1 Process for preparing substituted macrocyclics
05/1984
05/30/1984EP0109811A2 Bryozoan antibiotics
05/29/1984US4451480 Method of treating acne using ozonized materials
04/1984
04/04/1984EP0104984A2 Vinylcarbamic acid esters and their preparation
03/1984
03/13/1984US4436923 Trifluoromethyl-substituted chromogenic crown ethers and methods of using same
03/06/1984US4435582 Manufacture of macrocyclic polyethers
01/1984
01/11/1984EP0097960A2 Bis-crown-ether derivatives and their use
12/1983
12/27/1983US4423238 Phase transfer agents, alkali metals
12/20/1983US4421923 Reaction of a bisphenol ether with epichlorohydrin
08/1983
08/24/1983EP0086358A1 Process for the preparation of tetramethylene carbonate and bis-tetramethylenedicarbonate
08/16/1983US4398912 Lipophilic-hydrophilic crown compound solubilizers; amphoteric surfactants; hair dyes; shampoo
07/1983
07/12/1983US4393223 Thermal depolymerization of polyesters
06/1983
06/29/1983EP0082518A2 Hemispherands in ion-sensitive compositions
05/1983
05/24/1983CA1146951A1 Process for the continuous manufacture of trioxan
05/04/1983EP0077980A2 (Potassium ion-selective membrane) electrode
04/1983
04/26/1983US4381397 Method for synthesizing trioxane
03/1983
03/08/1983CA1142531A1 Dimerization and/or oligomerization of cyclic aliphatic ethers
02/1983
02/22/1983US4374974 Method for making polyformals and polyformal products made thereby
01/1983
01/20/1983WO1983000149A1 New crown ether compounds, process for the preparation of the crown ether complex forming agents and ion-selective membrane electrodes containing the same
12/1982
12/22/1982EP0067240A1 Process for separating trioxane
12/07/1982US4362714 Shampoo, hair conditioner
11/1982
11/30/1982US4361473 Crown compounds
11/16/1982US4359477 Enterochelin complexes
11/16/1982CA1135708A1 Process for the preparation of surfactive polyester products and compositions thereof
11/03/1982EP0063782A1 Process for recovering trioxane
09/1982
09/28/1982US4351933 Vinyl substituted cyclic polyethers and addition polymers thereof
09/28/1982CA1132552A1 Process for the preparation of surfactant cyclic polyethers and compositions thereof
09/14/1982CA1131647A1 Macrocyclic polyether complexes and method for macrocyclic polyether isolation via said complexes
08/1982
08/18/1982EP0057825A1 Process for the preparation of aliphatic cyclic carbonates
07/1982
07/20/1982US4340542 Process and equipment for the continuous manufacture of trioxan
07/13/1982CA1127653A1 Process for th simultaneous preparation of trioxan and cyclic formals
06/1982
06/23/1982EP0054283A1 Process for preparing substituted macrocyclics
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