The Goodyear & Tire Rubber Company

Roger J Hopper

Joseph Frank Geiser

Paul Harry Sandstrom

Budd H Sturm

Dane Kenton Parker

Richard Michael D'Sidocky

Joseph A Kuczkowski

Cheryl Ann Losey

Arthur Webster Magee

Carl R Parks

Leland E Beyersdorff

Richard T Musleve

Robert Charles Hirst

Steven M Ryba

Niranjan V Shah

A retreaded tire comprised of a tread and carcass with an intervening rubber layer, conventionally referred to as a cushion, wherein the tread has an oil rich rubber-based adhesive on its inner surface at the interface between said tread and cushion. Said oil rich rubber based adhesive is free, or substantially free, of volatile organic compounds, particularly volatile organic solvents. Alternately, the oil-rich rubber-based adhesive may contain oil and volatile organic solvent wherein oil is the major component insofar as the oil and solvent is concerned.

Retreaded tire having tread with oil rich rubber-based adhesive

The present invention relates to a rubber composition containing silica reinforcement and pneumatic tires having treads comprised of such rubber composition. The rubber composition comprises an elastomer, silica, optionally carbon black, and a silica coupler comprised of an N,N'-diorgano-N,N'-dithiobis (organosulfonamide).

Silica reinforced rubber composition and use in tires

The subject invention discloses a process for preparing an N-chloro(or bromo)thio-sulfonamide-modified terpolymer which comprises reacting:

Process for preparation of N-halothiosulfonamide modified terpolymers

The present invention relates to a process for the production of organosilicon compounds of the formula

Preparation of sulfur-containing organosilicon compounds

A tire tread composition comprises a tread rubber compound containing a sulfonamide modified EPDM terpolymer which imparts improved abrasion resistance, improved ozone resistance, improved hysteresis and the like.

Tread compounds containing modified EPDM which exhibit good abrasion

The present invention relates to a process for preparing hydroxylated rubber by reacting (a) a rubber having from about 5 to about 75 percent of a 1,2-double bond content with (b) a mercaptan of the formula: ##STR1## wherein n is an integer of from 3 to 19; and wherein the reaction is conducted in the solid state and is catalyzed by a free radical catalyst.

Process for the solid state (solventless) hydroxylation of

Chlorothio-sulfonamide modified rubbery terpolymers, such as chlorothio-sulfonamide modified EPDM rubbers, have utility in a variety of applications. For example, such modified rubbers can be utilized in the sidewalls of pneumatic tires. Such modified rubbers are prepared by reacting a terpolymer of ethylene, an .alpha.-olefin containing from 3 to 6 carbon atoms, and a non-conjugated diene containing from 6 to 12 carbon atoms with a N-chlorothio-sulfonamide. The present invention is based upon the unexpected finding that the rate of this reaction can be greatly accelerated by conducting it in the presence of a saturated aliphatic carboxylic acid containing from 6 to 30 carbon atoms, such as stearic acid. The present invention accordingly disclosed in a method of preparing a N-chlorothio-sulfonamide modified terpolymer by reacting a terpolymer of ethylene, an .alpha.-olefin containing from 3 to 6 carbon atoms and a non-conjugated diene containing from 6 to 12 carbon atoms with a N-chlorothio-sulfonamide; the improvement which comprises conducting the reaction in the presence of at least one saturated aliphatic carboxylic acid containing from 6 to 30 carbon atoms.

Modification process using N-chloro-thiosulfonamide and rubber

The present invention relates to a process for synthesizing N,N'-dithiobis(sulfonamides) by reacting a sulfonamide of the formula: ##STR1## with sulfur monochloride and caustic in a mixed organic-aqueous mediua, wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl radicals having from about 1 to about 20 carbon atoms, cycloalkyl radicals having from about 5 to about 20 carbon atoms, phenyl radicals, alkaryl radicals having from about 7 to 20 carbon atoms, and haloaryl radicals having about 6 to about 10 carbon atoms and where R.sup.1 is also selected from radicals having the formula: ##STR2## wherein R.sup.3 and R.sup.4 are individually selected from said alkyl, cycloalkyl, phenyl, alkaryl and haloaryl radicals and wherein R.sup.3 and R.sup.4 can be joined together to represent radicals selected from --CH.sub.2 --.sub.n, where n is an integer of 4 to 7 and --CH.sub.2).sub.2 O--CH.sub.2 --.sub.2.

Process for synthesizing N,N'-dithiobis(sulfonamides)

Chlorothio-sulfonamide modified rubbery terpolymers, such as chlorothio-sulfonamide modified EPDM rubbers, have utility in a variety of applications. For example, such modified rubbers can be utilized in the sidewalls of pneumatic tires. Such modified rubbers are prepared by reacting a terpolymer of ethylene, an .alpha.-olefin containing from 3 to 6 carbon atoms, and a non-conjugated diene containing from 6 to 12 carbon atoms with a N-chlorothio-sulfonamide. The present invention is based upon the unexpected finding that the rate of this reaction can be greatly accelerated by conducting it in the presence of a saturated aliphatic carboxylic acid containing from 6 to 30 carbon atoms, such as stearic acid. The present invention accordingly discloses in a method of preparing a N-chlorothio-sulfonamide modified terpolymer by reacting a terpolymer of ethylene, an .alpha.-olefin containing from 3 to 6 carbon atoms, and a non-conjugated diene containing from 6 to 12 carbon atoms with a N-chlorothio-sulfonamide; the improvement which comprises conducting the reaction in the presence of at least one saturated aliphatic carboxylic acid containing from 6 to 30 carbon atoms.

Modification of rubber with N-chlorothio-sulfonamide

There is disclosed a preparation of (optionally substituted) 2,2'-dithiobis(benzothiazole) by the oxidation of 2-mercaptobenzothiazole using bromate salts as the oxidant in an acidified aqueous reaction medium. The process of this invention provides an efficient and practical step in a procedure for the production of 2,2'-dithiobis(benzothiazole) that is virtually pollution free.

Preparation of 2,2'-dithiobis(benzothiazole) in an acidic aqueous

There is disclosed a preparation of (optionally substituted) 2,2'-dithiobis(benzothiazole) by the oxidation of 2-mercaptobenzothiazole using bromate salts as the oxidant in an aqueous/alcohol reaction medium. The process of this invention provides an efficient and practical step in a procedure for the production of 2,2'-dithiobis(benzothiazole) that is virtually pollution free.

Preparation of 2.2'-dithiobis(benzothiazole) in an aqueous/alcohol

There is disclosed a compound having the structure

Oligomeric amine and phenolic antidegradants

There are disclosed cyanamide derivatives as vulcanization rate modifiers which when added to customary cure packages, accelerate the rate of vulcanization and result in vulcanizates having improved characteristics and age resistance.

Cyanamide derivatives as vulcanization rate modifiers

Organo-sulfur impurities are removed from organic or aqueous solutions by contacting said solutions with polymers containing functional groups consisting of metal salts of N-halosulfonamides.

Resins for removal of organo-sulfur compounds from organic or aqueous

There is disclosed a novel class of vulcanization accelerators, specifically compounds such as 2-(isopropylsulfinyl)-benzothiazole.

Growing community of inventors

Akron, OH, United States of America

Roger J Hopper