Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1981-11-04
1982-12-28
Hayes, Lorenzo B.
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
106 74, 106 383, 423332, C01B 3324
Patent
active
043661360
ABSTRACT:
Prepolymers of alkali metal silicates and/or alkaline earth metal silicates and metal oxides, which can be used as molding compositions, preferably compression molding compositions, for the production of compression-molding laminates or of insulating sheets, are obtained by a method wherein a mixture of solid alkali metal silicates and/or alkaline earth metal silicates, and/or aqueous solutions of such silicates, with or without addition of water, and of divalent to tetravalent metal oxides, the ratio of metal oxide to silicate in the mixture being from 1:1 to 1:9, expressed in parts by weight of solids, and the homogenized mixture having a water content of from 10 to 50% by weight, based on the total amount of mixture, is allowed to pre-react in the temperature range of 10.degree. to 50.degree. C. until the water content of the mixture has decreased by from 0.1 to 25% by weight and a product which is sufficiently tough and dry to permit comminution is obtained, and this product is comminuted and then heated at temperatures of up to 120.degree. C. until the prepolymer obtained has a water content of from 20 to 2% by weight.
REFERENCES:
patent: 1956895 (1934-05-01), Chapman et al.
patent: 2919996 (1960-01-01), Tela
patent: 2943948 (1960-07-01), Allen
patent: 2948701 (1960-08-01), Baker et al.
patent: 3033700 (1962-05-01), Buckman et al.
patent: 3102037 (1963-08-01), Kimpel
patent: 3129134 (1964-04-01), Lagerstrom
patent: 3707386 (1972-12-01), Wilhelm
patent: 3990903 (1976-11-01), Mallow
Forster Ewald
Kartschmaroff Peter
Schaffner Armin
Ciba-Geigy Corporation
Hall Luther A. R.
Hayes Lorenzo B.
LandOfFree
Moldable prepolymers based on alkali metal silicates and alkalin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Moldable prepolymers based on alkali metal silicates and alkalin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moldable prepolymers based on alkali metal silicates and alkalin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1336835