Method of rendering materials water repellent

• US 2,553,314 A
• Filed: 07/01/1944
• Issued: 05/15/1951
• Est. Priority Date: 07/01/1944
• Status: Expired due to Term

• Current Assignee: Charles P. Haber
• Original Assignee: Charles P. Haber
• Inventors: Haber, Charles P.
• Application Number:
  US02/543,211
• Time in Patent Office: 2,509 Days
• US Class Current: 428/429
• CPC Class Codes: C03C 17/30 with silicon-containing compounds
• CPC Class Codes: C04B 35/00 Shaped ceramic products characterised by their composition porous ceramic products C04B38/00; ceramic articles characterised by particular shape, see the relevant classes, e.g. linings for casting ladles, tundishes, cups or the like B22D41/02; ceramic substrates for microelectronic semi-conductors H01L23/15; Ceramics compositions containing free metal bonded to carbides, diamond, oxides, borides, nitrides, silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides or sulfides other than as macroscopic reinforcing agents C22C; shaping of ceramics B28B; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products chemical preparation of powders of inorganic compounds C01; infiltration of sintered ceramic preforms with molten metal C04B41/51
• CPC Class Codes: C04B 41/009 characterised by the material treated
• CPC Class Codes: C04B 41/463 Organic solvents
• CPC Class Codes: C04B 41/4916 applied to the substrate as a solventless liquid
• CPC Class Codes: C04B 41/4944 containing atoms other than carbon, hydrogen, oxygen, silicon, alkali metals or halogens, e.g. N-silyldisilazane: Image
• CPC Class Codes: C04B 41/4977 characterised by the number of silicon atoms
• CPC Class Codes: C04B 41/4983 Polycarbosilanes, i.e. polymers with a -Si-C-Si-chain; Polysilazanes, i.e. polymers with a -Si-N-Si-chain; Polysilathianes, i.e. polymers with a -Si-S-Si-chain
• CPC Class Codes: C04B 41/84 Compounds having one or more carbon-to-metal of carbon-to-silicon linkages
• CPC Class Codes: C08G 77/62 Nitrogen atoms
• CPC Class Codes: D06M 15/6436 containing amino groups
• CPC Class Codes: D21H 17/07 Nitrogen-containing compounds
• CPC Class Codes: D21H 19/32 obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
• CPC Class Codes: Y10T 428/31612 As silicone, silane or siloxane

Claims

2. THE PROCESS OF TRETING GLASS TO MAKE IT NONWETTABLE BY WATER WHICH COMPRISES CONTACTING THE SURFACE THEREOF WITH A LIQUID COMPOSITION COMPRISING A COMPLEX MIXTURE CONSISTING ESSENTIALLY OF CYCLIC AND LINEAR METHYL POLYSILAZINES AND OBTAINED BY EFFECTING REACTION BETWEEN (A) A MIXTURE OF METHYL CHLOROSILANES CONSISTING ESSENTIALLY OF DIMETHYLDICHLROSILANE AND METHYLTRICHLOROSILANE WHEREIN THE METHYLTRICHLOROSILANE IS PRESENT TO THE EXTENT OF A FEW PER CENT, AND (B) LIQUID ANHYDROUS AMMONIA WHICH IS PRESNT IN AN AMOUNT SUFFICIENT TO GIVE A METHYL POLYSILIAZINE SUBSTANTIALLY FREE OF SILICON-BONDED CHLORINE.