Novel processing aids for rubber compounds

Claim 2

A COMPOSITION COMPRISING: A. FROM ABOUT 5 PERCENT TO ABOUT 15 PERCENT OF AROMATIC ESTERS SELECTED FROM THE GROUP CONSISTING OF (1) DI-ARYLAND DI-ARYALKYL PHATHALATES; (2) DI-ARYL- AND ARYALKYL MONO-GLYCOLETHER PHTHALATES; (3) PHTHALATES FROM POLYGLYCOL MONOETHERS OF ARYL AND ARYALKYL COMPOUNDS WHEREIN THE POLYGLYCOL CHAIN CONTAINS FROM 2 TO 6 ETHYLENE OXIDE GROUPS IN THE CHAIN; (4) DI-BENZOATES OF GLYCOL, AND PROPYLENEGLYCOL AND THEIR DI- AND TRIMERS; AND (5) MIXTURES OF THE ABOVE B. FROM ABOUT 5% TO ABOUT 30% OF COMPOUNDS WITH ALCOHOLIC OR GLYCOLIC HYDROXYL GROUPS SELECTED FROM THE GROUP CONSISTING OF (1) STRAIGHT OR BRANCHED CHAIN ALIPHATIC ALCOHOLS HAVING FROM ABOUT 8 TO 20 CARBON IN THE CHAIN; (2) ALKYL-PHENOXY ESTERS OF GLYCOLS OR POYLGLYCOLS WHEREIN THE ALKYL GROUP IS LIMITED TO ABOUT 12 CARBONS IN THE CHAIN, AND THE POLYGLYCOL GROUPING DOES NOT CONTAIN MORE THAN ABOUT 6(CH2-CH2-O-) GROUPS; (3) POLYPROPYLENE GLYCOL OF APPROXIMATELY THREE PROPYLENE OXIDE GROUPS IN THE MOLECULE; AND (4) MIXTURES OF THE ABOVE, C. FROM ABOUT 5% TO ABOUT 15% OF POTASSIUM OR SODIUM SOAPS MADE FROM COMMERCIAL MIXTURES OF FATS OR FATTY ACIDS CONTAINING FROM ABOUT 12 TO ABOUT 18 CARBONS IN THE CHAIN, SAID CHAINS HAVING ONLY A SMALL DEGREE OF UNSATURATION WITH MORE THAN 50% OF THEM HAVING 18 CARBON IN THE CHAIN, D. FROM ABOUT 10% TO ABOUT 30% OF FATTY ACIDS HAVING FROM ABOUT 12 TO ABOUT 18 CARBON ATOMS IN THE CHAIN, SAID CHAINS HAVING ONLY A SMALL DEGREE OF UNSATURATION, WITH MORE THAN 50% OF THEM HAVING 18 CARBON ATOMS IN THE CHAIN, E. FROM ABOUT 5% TO ABOUT 10% OF A METAL SOAP WHERE THE METAL IS SELECTED FROM THE GROUP CONSISTING OF ZINC, MAGNESIUM, CALCIUM OR BARIUM, AND THE FATTY ACID PART OF THE SOAP HAS FROM ABOUT 12 TO 18 CARBON ATOMS IN THE CHAIN AND CONTAINS A HIGH PERCENTAGE OF CHAINS WITH A SINGLE DOUBLE BOND IN THE CHAIN, F. FROM ABOUT 15% TO ABOUT 60% OF HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF MINERAL OIL, MINERAL WAXES, AND PETROLATUM, OR MIXTURES OF THEM.

Claim 3

A composition according to claim 1 wherein said potassium or sodium soaps and said fatty acids have iodine values in the range of about 5 to about 15.

Claim 4

A composition according to claim 1 wherein the fatty acid part of said metal soap has iodine values in the range of about 80 to about 95.

Claim 5

A composition according to claim 1 comprising dipropyleneglycol dibenzoate, nonylphenoxytetraethyleneglycol, tripropylene glycol, potassium soap of hydrogenated tallow, stearic acid, zinc oleate, and petrolatum.

Claim 6

A composition according to claim 1 comprising dinonylphenoxy glycol phthalate and dinonylphenoxydiglycol phthalate, cetyl alcohol, nonylphenoxyglycol and nonylphenoxydiglycol, dodecylphenoxy hexaethyleneglycol, sodium stearaTe, stearic acid, calcium oleate, paraffinic mineral oil and paraffin wax.

Claim 7

A composition according to claim 1 comprising benzyldodecylphenoxy hexaethyleneglycol phthalate, 2-ethylhexanol, cetyl alcohol, dodecylphenoxy hexaethyleneglycol, nonylphenoxy tetraethyleneglycol, potassium stearate, stearic acid, barium oleate, magnesium oleate, and petrolatum.

Claim 8

A composition according to claim 1 comprising diphenyl phthalate, dipropyleneglycol dibenzoate, cetyl alcohol, tripropylene glycol, potassium stearate, stearic acid, zinc oleate and petrolatum.

Claim 9

A composition according to claim 1 comprising diphenyl phthalate, cetyl alcohol, potassium stearate, stearic acid, zinc stearate and petrolatum.

Claim 10

A composition according to claim 1 comprising diphenyl phthalate, cetyl alcohol, nonylphenoxytetraethyleneglycol, and tripropylene glycol, potassium soap of hydrogenated tallow, stearic acid, zinc oleate and petrolatum.

Claim 11

A composition according to claim 1 comprising of 5-15 percent dipropyleneglycol dibenzoate, about 3-20 percent nonylphenoxytetraethyleneglycol, about 2-10 percent tripropyleneglycol, about 5-15 percent potassium stearate, about 10-30 percent stearic acid, about 5-10 percent oleate, about 15-60 percent petrolatum.

Claim 12

A rubber composition comprising a rubber base, carbon black, and a small but effective amount of a composition comprising: a. From about 5% to about 15% of aromatic esters selected from the group consisting of (1) di-aryl-and di-arylalkyl phthalates, (2) di-aryl- and arylalkyl mono-glycolether phthalates, (3) phthalates from polyglycol monoethers of aryl and arylalkyl compounds wherein the polyglycol chain contains from 2 to 6 ethylene oxide groups in the chain, (4 ) di-benzoates of glycol and propyleneglycol, and their di- and trimers, and (5) mixtures of the above, b. From about 5% to about 30% of compounds with alcoholic or glycolic hydroxyl groups selected from the group consisting of (1) straight or branched chain aliphatic alcohols having from about 8 to 20 carbons in the chain, (2) alkyl-phenoxy ethers of glycols or polyglycols wherein the alkyl group is limited to about 12 carbons in the chain, and the polyglycol grouping does not contain more than about 6 (CH2-CH2-O-) groups, (3) polypropylene glycol of approximately three propylene oxide groups in the molecule, and (4) mixtures of the above, c. From about 5% to about 15% of potassium or sodium soaps made from commerical mixtures of fats or fatty acids containing from about 12 to about 18 carbons in the chain, said chains having only a small degree of unsaturation with more than 50% of them having 18 carbons in the chain, d. From about 10% to about 30% of fatty acids having from about 12 to about 18 carbon atoms in the chain, said chains having only a small degree of unsaturation, with more than 50% of them having 18 carbon atoms in the chain, e. From about 5% to about 10% of a metal soap where the metal is selected from the group consisting of zinc, magnesium, calcium, or barium, and the fatty acid part of the soap has from about 12 to 18 carbons in the chain and contains a high percentage of chains with a single double bond in the chain, f. From about 15% to about 60% of hydrocarbons selected from the group consisting of mineral oil, mineral waxes, and petrolatum, or mixtures of them.

Claim 13

A rubber composition comprising a rubber base, carbon black, and a small but effective amount of a composition comprising: a. From about 5% to about 15% of aromatic esters selected from the group consisting of (1) di-aryl-and di-arylalkyl phthalates, (2) di-aryl- and arylalkyl mono-glycolether phthalates, (3) phthalates from polyglycol monoethers of aryl and arylalkyl compounds wherein the polyglycol chain contains from 2 to 6 ethylene oxide groups in the chain, (4 ) di-benzoates of glycol and propyleneglycol, and their di- and trimers, and (5) mixtures of the above, b. From about 5% to about 30% of compounds with alcoholic or glycolic hydroxyl groups selected from the group consisting of (1) straight or branched chain aliphatic alcohols having from about 8 to 20 carbons in the chain, (2) alkyl-phenoxy ethers of glycols or polyglycols wherein the alkyl group is limited to about 12 carbons in the chain, and the polyglycol grouping does not contain more than about 6 (CH2-CH2-O-) groups, (3) polypropylene glycol of approximately three propylene oxide groups in the molecule, and (4) mixtures of the above, c. From about 5% to about 15% of potassium or sodium soaps made from commerical mixtures of fats or fatty acids containing from about 12 to about 18 carbons in the chain, said chains having only a small degree of unsaturation with more than 50% of them having 18 carbons in the chain, d. From about 10% to about 30% of fatty acids having from about 12 to about 18 carbon atoms in the chain, said chains having only a small degree of unsaturation, with more than 50% of them having 18 carbon atoms in the chain, e. From about 5% to about 10% of a metal soap where the metal is selected from the group consisting of zinc, magnesium, calcium, or barium, and the fatty acid part of the soap has from about 12 to 18 carbons in the chain and contains a high percentage of chains with a single double bond in the chain, f. From about 15% to about 60% of hydrocarbons selected from the group consisting of mineral oil, mineral waxes, and petrolatum, or mixtures of them.

Claim 14

A rubber composition according to claim 11 wherein said small but effective amount is about 0.5 to about 3% by weight.

Claim 15

An improved method for forming a rubber compound by mixing a rubber base with other compounding ingredients, wherein the improvement comprises adding to said rubber at the beginning of said compounDing method a composition according to claim 1, the amount of said composition being sufficient to reduce the time required to achieve mixing of the rubber compound.

Claim 16

A method according to claim 13 wherein said amount is from about 0.5 to about 3 percent based upon the total weight of said compound.

Claim 17

A method according to claim 13 wherein other compounding ingredients are added to the rubber simultaneously with said composition.