"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 4094861 | Process for the production of non-inflammable polytriazines Non-inflammable, high molecular weight polytriazines are obtained by condensing less than 3 mols of polyfunctional (amino)phenols with 1 mol phosphorus (oxy) trihalide in the presence of a base, subsequently reacting the still free primary amino or phenol... | 06/13/1978 |
| 4094852 | Process for the production of polytriazines in the presence of high-boiling esters A polytrimerizable mixture of 30 to 99.9% by weight of at least one aromatic, polyfunctional cyanic acid ester or a prepolymer thereof, and 0.1 to 70% by weight of at least one high-boiling ester with a boiling point above 250° C at 760 Torr, Said mixture res... | 06/13/1978 |
| 4092089 | Apparatus for the preparation of melt-sprayed spherical phenacetin granules An apparatus for melt-spraying thermally sensitive material of low viscosity comprises a heatable multi-screw extruder having intermeshing, self-cleaning screws of specified clearance between the screws and between the screws and the extruder housing, a h... | 05/30/1978 |
| 4089860 | Preparation of hydantoins by reacting esters of ethylene-1,2-dicarboxylic acids and ureas and thioureas A process for the preparation of (thio) hydantoins modified with carboxylic ester groups, wherein 1,2-ethylene dicarbocylic acid esters which may be substituted are reacted with (thio) urea compounds in a single stage reaction.... | 05/16/1978 |
| 4088780 | Substituted phenylguanidines and processes for their preparation and use N-[2-(Substituted amido)phenyl]-N',N"-bis-carbonylguanidines bearing an optionally substituted phenoxy, phenylthio, phenylsulfinyl or phenylsulfonyl group in the 4- or 5-position of the 2-(substituted amido)-phenyl group are anthelmintic agents. The compo... | 05/09/1978 |
| 4086346 | Preparation of melt-sprayed spherical phenacetin granules Substantially spherical granules of phenacetin are prepared by spraying liquid phenacetin which has been melted without decomposition by means of rapid passage through a melting device in which superheating is minimized. The resultant melt-sprayed granule... | 04/25/1978 |
| 4086341 | Cephalosporin derivatives Penicillin and cephalosporin derivatives characterized by the presence of a nitroalkyl, nitrocycloalkyl, nitrophenylalkyl or nitroanilinoalkyl group in the side chain are antibacterial agents. The compounds, of which 6-(2-nitro-3,3-dimethylbutyrylamido)-p... | 04/25/1978 |
| 4081596 | Pyrazol-5-ones 1-Substituted pyrazol-5-ones of the formula ##STR1## and pharmaceutically acceptable, nontoxic salts thereof, wherein R is hydrogen, amino, alkyl, alkenyl, phenyl or trifluoromethyl; R1 is hydrogen, alkyl, alkenyl, unsubstituted or substituted ... | 03/28/1978 |
| 4081539 | Penicillins and cephalosporins and their production ଲ-Lactams of the formula ##STR1## and pharmaceutically acceptable nontoxic salts thereof wherein A is hydrogen or alkyl of 1 to 4 carbon atoms; B is phenyl, methylphenyl, chlorophenyl, hydroxyphenyl or cyclohexa-1,4-dien-1-yl; R is a moiety of ... | 03/28/1978 |
| 4061653 | 1-Substituted-3-amino-pyrazol-5-ones 1-Substituted-3-amino-pyrazol-5-ones of the formula ##STR1## or a pharmaceutically acceptable non-toxic salt thereof wherein R is A. PHENYL SUBSTITUTED BY ONE OR TWO IDENTICAL OR DIFFERENT SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF ALKYL, PHE... | 12/06/1977 |
| 4046796 | Process for the production of polyfunctional cyanic acid esters Highly pure aromatic polyfunctional cyanic acid esters having a high stability in storage and being extraordinary suitable for use as starting compound for the production of plastics by cyclopoly-trimerization are obtained by a special process. Alkaline e... | 09/06/1977 |
| 4038340 | Unsaturated polyester resins which have radicals of monohydric alcohols as terminal groups Unsaturated polyester resins, the polyesters of which contain 0.3 - 0.7 moles, relative to the alcohol component, of units of monohydric alcohols are outstandingly suitable for the production of cured lacquer films which are uniformly matt without matting... | 07/26/1977 |
| 4036967 | 1,2,4-Triazole antimycotic compositions and use thereof Antimycotic compositions are produced which comprise an antimycotically effective amount of a 1,2,4-triazole of the formula: ##STR1## or a pharmaceutically acceptable non-toxic salt thereof wherein X1 is hydrogen or alkyl; X2 is... | 07/19/1977 |
| 4032655 | Phenylguanidines useful as anthelmintic agents N-[2-(Substituted amido)phenyl]-N',N"-bis-carbonylguanidines bearing an optionally substituted phenoxy, phenylthio, phenylsulfinyl or phenylsulfonyl group in the 4- or 5-position of the 2-(substituted amido)phenyl group are anthelmintic agents. The compou... | 06/28/1977 |
| 4031052 | Aqueous stoving lacquer containing &3xb5;-caprolactam as a reactive diluent Aqueous polyester and alkyd resin stoving lacquers containing &3xb5;-caprolactam as a so-called reactive diluent and small quantities of volatile organic solvents yield excellently hard coatings which are not brittle.... | 06/21/1977 |
| 4025492 | Thermoplastic copolyesters and a process for their production The heat distortion resistance and the molecular weight of polypropylene terephthalate and polybentylene terephthalate can be increased by cocondensing up to 10 mol-% of aliphatic diols containing 5 to 10 carbon atoms or of cycloaliphatic diols containing... | 05/24/1977 |
| 4005123 | Substituted phenylisothioureas and processes for their preparation and use N-[2-(Substituted amido)phenyl]-N'-carbonyl-S-substituted isothioureas bearing an optionally substituted phenoxy, phenylthio, phenylsulfinyl or phenylsulfonyl group in the 4- or 5-position of the 2-(substituted amido)-phenyl group are anthelmintic agents.... | 01/25/1977 |
| 4005037 | Polycarbonate-polyvinyl chloride moulding compounds Process for the production of vinyl chloride polymers modified with aromatic polycarbonate, characterized in that mixtures of olefinically unsaturated monomers containing at least 70 % by weight of vinyl chloride are polymerized by radical polymerization ... | 01/25/1977 |
| 4001348 | Unsaturated polyester resins containing additional accelerators Polyester moulding and coating compositions based on polyester resins of: A. from 20 to 90% by weight based on the sum of components (A) and (B), of ,ଲ-ethylenically unsaturated polyesters, and B. from 80 to 10% by weight based on the sum of components... | 01/04/1977 |