Abstract:
In carboxyl-terminated polybutadiene fuel binders, tris 1-(2methyl) aziridinyl phosphine oxide (MAPO) is converted into a bifunctional derivative with a fatty acid so that the catalytic effect of MAPO on the burning rate reduction is retained and the adverse effect on the elasticity of the cured polymer is eliminated.
Abstract:
A composition for making vulcanized butadiene rubber, wherein the amounts of sulfur as a vulcanizing agent and of zinc oxide as a vulcanizing activator are greatly reduced as compared with the conventional rubber compositions. By vulcanizing such a rubber composition, there can be produced vulcanized butadiene rubber having high tear strength, tensile strength and resistance to aging which have been unable to be realized by the conventional butadiene rubbers.
Abstract:
A RUBBER HAVING A PLASTICIZER THAT EXCEEDS THE SOLUBILITY LIMIT OF THE PLASTICIZER IN THE RUBBER. THE PLASTICIZER IS SELECTED SO THAT IT WILL PLASTICIZE THE PAINT AND SINCE IT EXCEEDS THE SOLUBILITY LIMIT OF THE PLASTICIZER IN THE RUBBER, IT WILL GRADUALLY MIGRATE TO THE SURFACE OF THE RUBBER AND ACT AS A SOFTENING AGENT FOR THE PAINT AND MAINTAIN THE PAINT IN A SOFT OR UNHARDENED CONDITION.
Abstract:
A composition for incorporating in rubber comprises, by weight, 40 to 59% of paraffin wax, 10 to 14% of an oleate of zinc, magnesium, calcium, strontium or barium, 5 to 8% of a potash soap of a C12-C18 saturated fatty acid, 14 to 17% of a C12-C18 saturated fatty acid, 4 to 20% of a polyethyleneglycol alkyl ether, polyethyleneglycol alkylphenol ether, or a polyethylene-glycol (mol. wt. 100-400) monoester of a C13-C21 fatty acid, 5 to 10% of an alkyl glycol having water and oil solubility and from 1 to 4 methyl or methylene groups not directly connected to the hydroxyl groups or polyglycols of the said compounds, and from 3 to 5% of branched or straight chain C4-C18 fatty alcohols.ALSO:A composition for adding to natural and synthetic rubber comprises 10 to 14% of an oleate of zinc, magnesium, calcium, strontium, or barium, from 5 to 8% of a potash soap of a C12-C18 saturated fatty acid, from 14 to 17% of a C12-C18 saturated fatty acid, from 4 to 20% of a polyethyleneglycol alkyl ether, polyethyleneglycol alkylphenol ether, or a polyethyleneglycol (molecular weight 100-400) monoester of a C13-C21 fatty acid, from 5 to 10% of an alkylgycol having water and oil solubility and from 1 to 4 methyl or methylene groups not directly connected to the hydroxyl groups or polyglycols of the said compounds, from 3 to 5% of branched or straight chain C11-C18 fatty alcohols, and from 40 to 59% of one or more of petrolatum, mineral oils or paraffin wax.
Abstract:
One embodiment of the present invention, a friable composition is formed by hydroxyl terminated polymers which are coupled by diisocyantes in which the equivalent ratio of the isocyanate groups to the hydroxyl groups is from about 0.9 to about 1.2. Catalysts which promote isocyanate coupling are utilized. A compounding ingredient such as curing agents, reinforcers, moisture scavengers, accelerators and the like, is added to the above mixture so that upon coupling, a gelled friable composition is formed. The method relates to a compounding ingredient which is added to a gelling dispersant system comprising a coupling system such as a diisocyanate and a reactive hydroxyl terminated polymer with usually a small amount of catalysts, blending the materials to form a uniform mixture, and producing a gelled mass upon coupling so that a good dispersion of the compounding ingredient is obtained. A friable product is produced in situ.
Abstract:
Polychloroprene for use in adhesive compositions and having the advantage of remaining in a single phase is prepared by effecting polychloroprene polymerization in the presence of a binary emulsifying system of 1.8 to 3% of resinic derivative and 0.1 to 1% of a fatty acid or salt thereof. Alternatively, a ternary emulsifying system may be used comprising 1 to 3% of the resinic derivative, 0.1 to 1.5% of the fatty acid or salt therof and 0.1 to 2.5% of a sticking agent of a colophony derivative or a polydiene resin.
Abstract:
1. IN A PROCESS FOR THE PRODUCTION OF WATER-BASED LATICES OF COPOLYMERS OF HARD MONOMERS AND SOFT MONOMERS USEFUL AS COATING COMPOSITIONS, THE STEPS OF HOMOGENIZING AN AQUEOUS MIXTURE CONSISTING ESSENTIALLY OF (I) SAID MONOMERS, (II) A MONOMER-SOLUBLE INITIATOR AND (III) AN ANIONIC AMMONIUM SALT OF A FATTY ACID OF FROM 10 TO 26 CARBON ATOMS AS THE FUGITIVE TYPE SURFACTANT AT A TEMPERATURE BELOW THE POLYMERIZATION TEMPERATURE OF SAID MIXTURE, HEATING AND STIRRING SAID HOMOGENIZED AQUEOUS MIXTURE AT A POLYMERIZATION TEMPERATURE SUFFICIENT TO CAUSE SIAD MONOMERS TO UNDERGO POLYMERIZATION, AND RECOVERING THE COPOLYMER LATEX; SAID HARD MONOMER BEING A MONOMER WHOSE HOMOPOLYMER HAS A GLASS TRANSITION TEMPERATURE GREATER THAN 40*C. AND SAID SOFT MONOMER BEING A MONOMER WHOSE HOMOPOLYMER HAS A GLASS TRANSITION TEMPERATURE LESS THAN 40*C.
Abstract:
CHLOROPRENE POLYMERS, USEFUL IN NON-PHASING SOLVENT CEMENTS HAVING GOOD TACK, ARE PRODUCED BY POLYMERIZING CHLOROPRENE, OPTIONALLY WITH ANOTHER COPOLYMERIZABLE MONOMER, IN AN AQUEOUS ALKALINE EMULSION IN THE PRESENCE OF WATEER-SOLUBLE SALTS OF: (A) ABOUT 0.5 TO 1.5 PERCENT OF A ROSIN ACID (B) ABOUT 1 TO 2 PERCENT OF A C12 TO C20 UNSATURATED FATTY ACID AND (C) ABOUT 0.5 TO 1.5 PERCENT OF A CONDENSATION PRODUCT OF FORMALDEHYDE WITH A NAPHTHALENE SULFONIC ACID, ALL PERCENTAGES BEING BY WEIGHT BASED ON THE WEIGHT OF CHLOROPRENE AND ANY OTHER COPOLYMERIZABLE MONOMER PRESENT, THE PERCENTAGE OF (A) AND (B) BEING BASED ON THE FREE ACID AND OF (C) BEING BASED ON THE SALT; THE TOTAL PERCENTAGE OF (A) AND (B) BEING AT LEAST 2, AND THE CONVERSION OF MONOMER TO POLYMER BEING AT LEAST ABOUT 85 PERCENT; AND OPTIONALLY HAVING PRESENT DURING POLYMERIZATION FROM 1 TO 4 PERCENT BY WEIGHT OF A METHYL ESTER OF A NATURALLY OCCURING ROSIN ACID BASED ON THE WEIGHT OF CHLOROPRENE.
Abstract:
The incorporation of a combination of a hydroxyaryl carboxylic acid or a salt or ester thereof, into a polybutadiene resin greatly enhances the resistance thereof to thermo-oxidative deterioration.