Abstract: A method and apparatus for determining the density of dry fibers, mainly in the form of fiber bundles. A sample of these dry fibers is weighed. The fiber bundles of these dry fibers are fed into the suction side of an air aspirator and opened into a combination of smaller fiber bundles and individual fibers as they exit from the pressure side of the aspirator. The combination of smaller fiber bundles and individual fibers passes through a chamber and is deposited onto a screen in the bottom of an enclosure. The enclosure is supported so that there is an open space under the screen, thereby allowing the air which is transporting the combination when the combination is deposited on the screen to pass through the screen and exit from the apparatus. The volume of the combination of smaller fiber bundles and individual fibers deposited on the screen in the enclosure is measured, and the density of the dry fibers is calculated using the measured weight and volume of the sample.

Abstract: A process for the preparation of a metal halide-amide reaction product, useful in the preparation of metal-modified amide-aldehyde polymers, which comprises(1) reacting in a water-immiscible inert liquid medium a metal halide with at least one amide having at least two replaceable hydrogens to obtain a reaction product therebetween;(2) hydrolyzing the reaction product obtained in step (1) above with water to form an aqueous solution of the reaction product;(3) partially neutralizing the aqueous solution of the reaction product obtained in step (2) with a bicarbonate, and(4) recovering the metal halide-amide reaction product obtained.

Abstract: Polymers comprising randomly repeating units of the general formula ##STR1## wherein R.sub.1 is linear or branched C.sub.1 -C.sub.10 alkoxy, R.sub.2 is linear or branched C.sub.1 -C.sub.10 alkyl, hydrogen or halogen, and W is C.sub.2 to C.sub.10 alkenyl-substituted aryloxy. These novel polymers are elastomers and may be used to form flexible and semirigid foams and coatings. They display good fire retardance and low smoke levels.

Abstract: A novel catalyst system is described that is useful in the trimerization of organic isocyanates. The system comprises (1) N,N',N"-trisdialkylaminoalkyl-s-hexahydrotriazine and (2) a compound selected from the group consisting of 3,5-bis(N,N-dialkylaminoalkyl)-1,3,5-tetrahydrooxadiazine, 5-(N,N-dialkylaminoalkyl)-1,3,5-dihydrodioxazine and the mixtures thereof.

Abstract: A transfer sheet is printed with inks containing sublimable dyes. A carpet having face fibers and a backing is prepared. The inked surface of the transfer sheet and the carpet are positioned adjacent the openings on opposite sides of a honeycomb structure. Heated air is applied to the transfer sheet to sublime the dyes in the ink and to transfer the sublimed dyes from the carrier, through the passageways of the honeycomb structure, to the carpet. The fibers of the carpet are thereby dyed.

Abstract: A process is disclosed for the catalytically-induced preparation of phosphazene polymers. Cyclic halophosphazenes are polymerized in the presence of a catalytically sufficient amount of a compound having the formula M(OR').sub.x where M is an alkali metal or alkaline earth metal, x is equal to the valence of the metal and R' is C.sub.1 to C.sub.10 linear or branched alkyl, C.sub.1 to C.sub.10 substituted linear or branched alkyl, the substituent selected from the group consisting of nitro, C.sub.1 to C.sub.10 alkyl, C.sub.1 to C.sub.10 alkoxy, C.sub.6 to C.sub.10 aryl and C.sub.6 to C.sub.10 aryloxy, or N.sub.3 P.sub.3 Cl.sub.z (OR').sub.6-z wherein R' is as defined above and z equals 0 to 5.BACKGROUND OF THE INVENTIONThe present invention relates to a process for the preparation of phosphazene polymers. More specifically, the present invention relates to a method for catalytically producing polyphosphazenes.

Abstract: The light fixture herein can assume multi-angle relationships to the ceiling grid system within a suspended ceiling system. The light fixture is suspended from the ceiling by support posts and the support posts are movable relative the grid system of the ceiling system and the back of the light fixture to permit the light fixture to be moved to a number of different locations.

Abstract: A fabric to have a coating of controlled thickness applied to its upper surface moves between a supporting roll and a supporting plate. The lower surface of the fabric contacts the supporting roll and supporting plate but is unsupported therebetween. Between the supporting roll and plate, the moving fabric is depressed by a blade extending across its width. Near to the blade and between this blade and the supporting plate, a coating is applied to the upper surface of the fabric. A gauging device adjacent to where the coating is applied controls the thickness of the coating. The distance between the blade which depresses the fabric and the supporting plate should be several orders of magnitude greater than the distance between this blade and the gauging device. Any variations in fabric thickness as the fabric passes over the supporting plate would cause corresponding variations in the coating thickness if the coating were being applied over this plate.

Abstract: A method for treating a lightweight building material, the material comprising sodium silicate as a binder and an expanded inorganic aggregate. The building material is contacted with a reactive organo silane, the resulting treated building material is nonefflorescent.

Abstract: This invention relates to polyphosphazenes which have an at least partially regulated structure corresponding to the formula:--N.sub.3 P.sub.3 (Cl).sub.5 (OR.sup.1)--.sub.n (I)where n is greater than 2, and where R.sup.1 is phenyl or substituted phenyl. This invention further relates to copolymers, derived from the above polymers (I), which correspond to the formula:--N.sub.3 P.sub.3 (OR.sup.1)(OR.sup.2).sub.5 --.sub.n (II)where R.sup.1 is phenyl or substituted phenyl and where R.sup.2 is different than R.sup.1 and is an alkyl or substituted alkyl radical or a phenyl or substituted phenyl radical.These polymers are prepared by polymerizing cyclic triphosphazenes of the formula: ##STR1## to form the polymers (I) which, in turn, are reacted to replace the chlorine with organic radicals to form polymers (II).The polymers (II) can be formed by chemical blowing agents to form fire retardant articles. These polymers have fire retardant properties and evolve little or no smoke when exposed to an open flame.

Abstract: Flame-retardant and low-smoke plasticized polyphosphazenes are disclosed. The plasticizers are substituted cyclotriphosphazenes and cyclotetraphosphazenes.

Abstract: Polymers comprising randomly repeating units of the general formula ##STR1## wherein R.sub.1 is linear or branched C.sub.1 -C.sub.10 alkoxy, R.sub.2 is linear or branched C.sub.1 -C.sub.10 alkyl, hydrogen or halogen, and W is C.sub.2 to C.sub.10 alkenyl-substituted aryloxy. These novel polymers are elastomers and may be used to form flexible and semirigid foams and coatings. They display good fire retardance and low smoke levels.

Abstract: Polyvinyl chloride injection-molding compounds resistant to splitting when nailed during assembly operations comprising a polyvinyl chloride-based resin, from 15 to 25 parts per 100 of the base resin of chlorinated polyethylene, from 20 to 80 parts per 100 of styrene-acrylonitrile copolymer and from 5 to 15 parts per 100 of a styrene-butadiene random or block copolymer rubber.

Abstract: Scrap sheet floor covering is recovered for reuse through the use of a Henschel mixer. The mixer grinds the prediced scrap in the presence of a plasticizer to separate the asbestos containing backing material from the vinyl layer. The resultant blended mix can then be used as a raw material in the manufacture of fiber-filled vinyl tile.

Abstract: A new synthetic route to sulfonyl semicarbazides (sulfonyldiazanecarboxamides) and sulfonyl-1,2-diazanedicarboxyamide wherein a substituted 1,2-diazenedicarboxamide is reacted with a salt of a sulfinic acid.

Abstract: Azido formyl or azido sulfonyl compounds are provided by compounds of the formula R(CH.sub.2).sub.m X wherein R represents a fluorocarbon or an alkoxy alkyl chain and X represents a sulphonazide or azidoformate group and m is an integer greater than 1. The R group may be C.sub.2 to C.sub.12 linear or branched alkyl, C.sub.2 to C.sub.12 linear or branched alkoxy substituted C.sub.2 to C.sub.12 alkyl, or C.sub.2 to C.sub.12 linear or branched fluoroalkyl. The group (CH.sub.2).sub.m is C.sub.2 to C.sub.10 linear or branched alkylene. These materials upon thermolysis give rise to a reactive intermediate which adds to and protects polymeric substrates such including polyethylene, polypropylene, polystyrene, the natural rubbers, polyamides, polyesters, polybutadienes, polyisoprenes, butadiene-isoprene copolymer, butyl rubber, ethylene-propylene copolymer, ethylene-propylene-dicyclopentadiene terpolymer, and the like, as well as blends thereof.

Abstract: A cellular high-temperature insulation composite molded product comprising the molded and cured product obtained by preparing a mixture of(1) a dry blend of(a) expanded perlite,(b) a calcium aluminate cement,(c) a refractory clay, and(d) wollastonite, with(2) an aqueous liquid composition comprising(a) an auxiliary binder, and(b) waterAnd molding and curing the mixture, and a method for the production of the above-described cellular high-temperature insulation composite molded product. Additional embodiments comprise use of reinforcing fibers and a surface active agent additionally in the aqueous liquid composition, generally as a foamed aqueous liquid composition and use of a chemical cement curing accelerator additionally in the aqueous liquid composition.

Abstract: A method for making a composite mold utilizing room temperature vulcanizing silicone rubber for the surface of the mold and room temperature vulcanizing polyurethane rubber for the rest of the mold.

Abstract: An apparatus for forming a mineral wool fiberboard product is described which includes means for separating mineral wool fibers and means for intimately mixing said fibers with a thermosetting powdered binder, means for entraining said mixture of fibers and binder in an air stream including means for directing said air stream into a mat-forming zone formed by converging upper and lower forming wires, means for exhausting air through said forming wires whereby the fiber and binder mixture is collected as two layers on the forming wires with the two layers becoming consolidated at the nip opening formed between the converging screens, and compacting and heating means whereby the mat of fibers and resins is compacted and cured to form a mineral fiberboard product, said exhaust system behind said screens being adjustable whereby the upper and lower outer layers of fibers and resins initially formed on said screens is comprised of an enriched layer of predominantly fine fibers.

Abstract: Flame and smoke-suppressant polymer compositions are described comprising a resinous polymer of vinyl chloride and a flame and smoke-suppressant amount of(1) at least one compound of the formula ##STR1## wherein R is C.sub.1 to C.sub.18 linear or branched alkyl and R.sub.1, R.sub.2 and R.sub.3 are the same or different and are hydrogen, C.sub.1 to C.sub.8 linear or branched alkyl or halogen; and(2) an oxide, hydroxide or salt of iron (III), zinc, or mixtures thereof.