Abstract: Elastomeric compositions having incorporated therein certain specific compounds and/or compositions which are non-toxic but render the metals to which the compositions are applied resistant to corrosion, particularly, when in a salt environment.

Abstract: A corrosion inhibiting coating composition for metals comprising a liquid polymer composition which contains a polymer which is capable of being cured to a solid elastomer such as polysulfide, polyurethane, polythioether or polyether and a water soluble ammonium salt of phosphoric acid, orthophosphorous acid or hypophosphorous acid.

Abstract: A liquid polymer which is rapidly curable, at room temperature, to a solid hydrolytically stable elastomer having high tensile and tear strengths, said liquid polymer having the formula: ##STR1## wherein R is a liquid polymeric backbone selected from the group consisting of polyether and polythioether, said backbone having a number average molecular weight of at least 1,500 and having no carboxyl or hydroxyl groups; R.sup.1 is lower alkyl, R.sup.2 is lower alkyl, R.sup.3 is a divalent organic radical having no sulfur atoms, R.sup.4 is alkylene of from 3 to 6 carbon atoms, and which separates the oxygen atom from X by at least 3 carbon atoms, X is sulfur or --S--R.sup.5 --S-- wherein R.sup.5 is alkylene having from 2 to 12 carbon atoms, alkylene thioether of from 4 to 12 carbon atoms or hydrocarbon ether of from 4 to 20 carbon atoms, p is 2 to 4, m is 1 to 3, n is 0 to 2 and the sum of m and n is 3. There is also disclosed a method for curing such liquid polymers.

Abstract: A multi-pane thermally construction in which one or more chambers are provided by two or more spaced argon gas and permeable transparent panes are filled with argon gas, said panes having inner edge margins, which includes the combination of: spacing means for spacing said means at said inner edge margins, and a seal having low permeability to argon gas between said spacing means and each of said inner edge margins, said seal comprising a solid elastomer of a cured polymer composition composed of thioether mercaptan terminated disulfide polymer of the formula HS(RSS).sub.m R'SH; (b) from about 10 mole percent to about 75 mole percent of diethyl formal mercaptan terminated polysulfide polymer of the formula HS(RSS).sub.n RSH; wherein in the formulae R is --C.sub.2 H.sub.4 --O--CH.sub.2 H.sub.

Abstract: A method for substantially preventing the escape of argon gas from a chamber defined by two window panes in spaced relation and spacing means between the inner edge surface portions of the window pane by:forming a seal at the edge portions of the spacing means of a liquid polymer composition composed of(a) from about 90 mole percent to about 25 mole percent of thioether mercaptan terminated disulfide polymer of the formula HS(RSS).sub.m R'SH;(b) from about 10 mole percent to about 75 mole percent of diethyl formal mercaptan terminated polysulfide polymer of the formula HS(RSS).sub.n RSH; wherein in the formulae R is --C.sub.2 H.sub.4 --O--CH.sub.2 H.sub.

Abstract: A method for producing mercaptan terminated liquid polymers with increased chemical reactivity and reduced odor is disclosed which involves heating the polymeric liquid material under conditions which avoid oxidation and depolymerization of the material while removing at least 50 weight percent of low molecular weight mercaptan compounds to produce a stripped polymer material having an increased cure rate and reduced obnoxious mercaptan odor.

Abstract: An improved thermal barrier extrusion in which a longitudinal metallic channel body has a left side and a right side which are connected together by thermally insulating material. A plurality of projections extending from the channel body sides into the thermally insulating material are provided which have cross-sectional configurations whose width increases away from the base or point of attachment to create bidirectional locking of the thermally insulating material to the channel body sides to reduce longitudinal shrinkage of the insulation material and increase resistance of the thermal barrier to fracture damage.

Abstract: A liquid polymer composition curable to a solid elastomer having good thermal stability which contains a mercaptan terminated disulfide polymer of the formula HS(RSS).sub.m R'SH wherein R is --C.sub.2 H.sub.4 --O--CH.sub.2 O--C.sub.2 H.sub.4 --; R' is a member selected from the group consisting of alkyl of from 2 to 12 carbon atoms; alkyl thioether of from 4 to 20 carbon atoms; alkyl ether of from 4 to 20 carbon atoms and one oxygen atom; alkyl ether of from 4 to 20 carbon atoms and from 2 to 4 oxygen atoms each of which is separated from the other by at least 2 carbon atoms, alicyclic of from 6 to 12 carbon atoms and aromatic lower alkyl; and the value of m is such that mercaptan terminated disulfide polymer has a molecular weight of between 1,000 to about 4,000. The method includes cleaving a polymer having disulfide linkages with an organic dimercaptan in the presence of an organic amine.

Abstract: Liquid polythioethers containing no oxygen in the polymeric backbone and a method for producing same which includes condensing an organic compound having primary mercaptan group with an organic compound having secondary hydroxyl group beta to a sulfur atom.

Abstract: A liquid, highly reactive alpha-beta ureide having the formula: ##STR1## wherein R is a polymeric backbone having no groups reactive with alpha-beta unsaturated amides, n is from 2 to 4 and R.sub.1 is hydrogen, lower alkyl or halogen, the cured elastomer resulting therefrom, and a method for making same.

Abstract: A dispensing cartridge for separately storing two materials until the time of use in two compartments divided by a barrier assembly. The elements that comprise the barrier assembly are used to divide the cartridge into two compartments, to mix the two materials, and to extrude the mixed material.

Abstract: A non-crystallizing, water, solvent, fuel and temperature resistant liquid polythioether having two to four terminating radicals which do not substantially reduce the water, solvent, fuel and temperature resistance and a water, solvent, fuel and temperature resistant polymeric backbone having repeating units of the formula: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl providing that a sufficient number of R.sub.1, R.sub.2, R.sub.3 and/or R.sub.4 are lower alkyl in said polymeric backbone to render said backbone non-crystallizing; X is a divalent organic radical selected from --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --S--CH.sub.2 --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --; n is 8 to 200; and p is 0 or 1.

Abstract: A polyurethane sealant including a polyurethane having terminal isocyanate groups and containing a dual curing catalysti of organic bismuth and organic tin, said polyurethane being the reaction product of a liquid poly (lower) alkylene polyol having a molecular weight of 6,000 or more and three to five hydroxyl groups and a sterically unhindered aromatic diisocyanate. The polyurethane sealant may be used in conjunction with a silane based primer and when applied to glass surfaces provides a high strength and rapidly curing seal.

Abstract: A hand held two part material meter-mix-dispenser apparatus has a hand held body including a base mounting an air driven cylinder means in association with a double plunger assembly and a pair of cartridge receiving barrels with means for hingedly mounting the barrels to the base so that when in hinged open position, the barrels are positioned to easily receive a pair of cartridges containing different parts of a material to be mixed and when moved into hinged closed position automatically locate such cartridges in association with the double plunger assembly for simultaneous exuding of the materials of the two cartridges through a mixing head mounted on the apparatus body. Air driven mixing means are provided in the mixing head to dynamically mix the materials under pressure being forced through the mixing head via disposable conduits running from the two cartridges during operation of the dual plunger assembly.

Abstract: Single component liquid mercaptan containing polymers having at least two terminal mercaptan groups can be cured rapidly by exposure to atmospheric oxygen in the presence of (1) a thiuram and an iron or manganese salt, oxide, hydroxide or metal complex or (2) an iron or manganese dithiocarbamate. A synergistic effect is obtained when calcium peroxide is added to either or both of the above curing systems.

Abstract: A static mixing chamber for mixing multi-component compositions has the provision of having the mixing chamber at the outlet of the feed lines. A valve is at the outlet end of the chamber. By having the chamber near the outlet end, a large pressure drop across the chamber is insured. Moreover, the valve at the end of the chamber insures that the large pressure drop will be maintained even during start-up of dispensing. By increasing the pressure drop over the chamber, mixing therethrough has been greatly enhanced. Therefore, a smaller mixture is required for effective mixing. The result in small size makes the static mixer capable of being hand held, in the form of a dispensing gun and the valve actuator is part of the dispensing gun so that the valve can be operated by the same hand that is holding the gun.