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Class 162/3 - Mineral fibers


Subclass of Class 162 - Paper making and fiber liberation
Definition: Processes which include the purification, recovery and/or
No. of patents: 20
Last issue date: 11/28/2006


NumberTitleIssue Date
7140153Synthetic roofing shingles
Disclosed is a coated synthetic shingle that exhibits increased resistance to ultra-violet radiation. The shingle is useable for roofing applications and includes a substrate having a substrate surface and a base coat that is applied to the substrate surface. The ba...
11/28/2006
6004428Process for fiber recovery from bonded fiber webs
A process for dissolving a binder off a fiber web bonded therewith includes treating the fiber web, which is bonded with a polymeric binder having carboxylate groups crosslinked via alkaline earth metal cations, with an aqueous solution of an alkali metal...
12/21/1999
4812204Process for obtaining boric acid treated asbestos fiber
The invention relates to novel borated asbestos fibers which possess improved filtration properties....
03/14/1989
4678700Fibrous composite materials
A fibrous composite material comprising carbon fibres and chemically delaminated vermiculite lamellae and production of the material by applying a suspension (preferably an aqueous suspension) of the lamellae to carbon fibres and removing the liquid mediu...
07/07/1987
4591103Asbestos process
A process of recovering asbestos fibre from asbestos-bearing material comprising a first stage of preparing a fibre concentrate by the steps of comminution, classification and spiral concentration and a second stage of liberating and recovering fibre, whe...
05/27/1986
4532006Inorganic fiber mat using mineral wool and related process and apparatus
An improved inorganic fiber mat containing mineral wool, preferably a composite mat of mineral wool and fiberglass, is prepared by: (a) forming an aqueous slurry of the inorganic fiber raw material containing non-fibrous, particulate contaminants; (b) agitatin...
07/30/1985
4495223Process for phosphating asbestos fibers
There is disclosed an improved process for phosphating asbestos fibers by reacting phosphorus chlorides with asbestos fibers in a first reaction vessel heated to a temperature within the range of the boiling temperature of the selected phosphorus chloride...
01/22/1985
4430157Calcined serpentine as inorganic charge in sheet materials
There is provided an improved non-woven fibrous felt material made up of fibers, partially fibrous agglomerates of forsterite, enstatite and silica as filler and an organic binder. The improved felt material possesses increased hot tensile strength over f...
02/07/1984
4391875Asbestos products of improved physical properties having metal oxides on the surfaces thereof
The abrasion resistance and tensile strength of asbestos is significantly improved by the addition of significant amounts of metal oxides, such as iron oxide, under conditions to provide at least some surface bonding of the oxides to the surface of the as...
07/05/1983
4356057Phosphated asbestos fibers
There is disclosed chemically modified chrysotile asbestos fibers, more particularly phosphated asbestos fibers containing from 0.5 to 5% by weight of phosphate groups and heat treated phosphated asbestos fibers, both of which have an infrared spectrum wh...
10/26/1982
4287020Method of preparation of an asbestos product
A flexible mat of randomly-oriented, interwoven chyrsotile asbestos fibers, having the appearance of a flake when flattened and spread out to "open" the fibers without separating the individual fibers and without significantly reducing their natural lengt...
09/01/1981
4259146Method of heat treating chrysotile asbestos fibres
Asbestos fibres having excellent properties in resin reinforcement are produced by controlled heat treatment of a coarse fraction of chrysotile asbestos fibres....
03/31/1981
4252603Preparation of asbestos fibers
A process of separating fibres from asbestos-bearing material which process comprises the steps by treating said asbestos-bearing material with a chemical agent capable of reacting with, or adsorbing on, asbestos fibres to form a dispersion, and agglomera...
02/24/1981
4234377Asbestos treatment
A method of treating asbestos comprising depositing on at least a portion of the asbestos a material consisting essentially of at least one metal ferrocyanide....
11/18/1980
4226672Process of separating asbestos fibers and product thereof
A process of separating fibres from asbestos-bearing material which process comprises the steps by treating said asbestos-bearing material with a chemical agent capable of reacting with, or adsorbing on, asbestos fibres to form a dispersion, and agglomera...
10/07/1980
4208244Asbestos dispersions
Asbestos fibre is dispersed in an aqueous medium essentially comprised of water, soap and from 25 to a 100 percent molar excess of fatty acid, said excess being calculated on the amount of fatty acid combined in the soap, to form a colloidal dispersion....
06/17/1980
4192707Heat treatment of chrysotile asbestos fibres
Asbestos fibres having excellent properties in resin reinforcement are produced by controlled heat treatment of a coarse fraction of chrysotile asbestos fibres....
03/11/1980
4180433Production of improved chrysotile asbestos fibres
The filtration rate of asbestos-cement slurries formed from chrysotile asbestos fibres is improved by controlled heat treatment of the fibres at a temperature of about 400° to about 600° C. without loss of water of crystallization and fibre strength. Th...
12/25/1979
3965284Chemically opening chrysotile asbestos and encapsulating
Chrysotile asbestos is chemically opened into the individual fibrils by soluble vinylic polymer polyelectrolytes containing carboxylic acid groups in aqueous media. Polyacrylic acids, polymethacrylic acids, maleic anhydride polymers and water-soluble copo...
06/22/1976
3957571Surface treatment of asbestos fibers
Treatment of asbestos fiber with a first coating of from about 0.1 to 5 weight percent of a phosphate, or acid thereof, and subsequent addition of a nonfoaming anionic dispersant on the coated fiber produces an asbestos fiber product that possesses improv...
05/18/1976
 
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