US3787341A
Expired / Lapsed
US
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Novel processing aids for natural and synthetic rubber compounds
Assignee: Technical Processing Inc
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Filing: 1972-06-12
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Granted: 1974-01-22
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Expires: 1992-06-12
Abstract
Abstract This invention is directed to novel compositions which aid in the processing of natural and synthetic rubber by permitting the usual peptizing step of such processing to be omitted. These compositions contain salts of aromatic sulfonic acids as well as long chain (fatty) acids as essential ingredients.
Inventors
- 👤 E Aron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/36; C08K5/41; C08K5/42; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
16 words
A composition according to claim 1 wherein the long chain fatty organic acid is stearic acid.
Claim 2
Dependent Claim
19 words
A composition according to claim 1 wherein the alkyl substituents have between 8 and 12 carbons in the chain.
Claim 3
Dependent Claim
31 words
A composition according to claim 1 wherein the alkali salt of the aromatic sulfonic acid is selected from the group consisting of potassium octylbenzene sulfonate, potassium n-dodecylbenzene sulfonate and mixtures thereof.
Claim 4
Dependent Claim
46 words
A composition according to claim 1 to which is added additional materials including aromatic esters, compounds with alcoholic and glycolic hydroxyl groups, potassium or sodium soaps of fats or fatty acids, a fatty acid, a metal soap of zinc, magnesium, calcium or barium, and a paraffin.
Claim 5
Dependent Claim
98 words
A composition according to claim 5 comprising from about 3 percent to about 15 percent of the alkali salt of said aromatic sulfonic acid, about 5 percent to about 25 percent of said long chain fatty organic acid, about 7 percent to about 15 percent diphenylphthalate, about 10 percent to about 20 percent tetraethylene glycol mono-nonylphenolether, about 5 percent to about 10 percent tripropylene glycol, about 5 percent to about 20 percent potassium stearate, about 4 percent to about 10 percent zinc oleate, up to 5 percent cetyl alcohol, and about 15 percent to about 20 percent petrolatum.
Claim 6
Dependent Claim
37 words
An improved rubber composition comprising a rubber base, carbon black, rubber additives wherein the improvement comprises A small but effective amount of a composition comprising: a. the alkali salt of an aromatic sulfonic acid having the formula
Claim 7
Dependent Claim
21 words
A rubber composition according to claim 7 wherein said amount is between about 1 percent to about 5 percent by weight.
Claim 8
Dependent Claim
62 words
An improved method for compounding rubber comprising admixing rubber with an additive of the class consisting of pigments, fillers and vulcanizing agents, wherein the improvement comprises admixing a composition according to claim 1 with rubber at the beginning of the mixing cycle prior to mastication of the rubber and no later than the time when said rubber is admixed with said additive.
Claim 9
Dependent Claim
101 words
A method according to claim 9 wherein said composition comprises from about 3 percent to about 15 percent of the alkali salt of said aromatic sulfonic acid, about 5 percent to about 25 percent of said long chain (fatty) organic acid, about 7 percent to about 15 percent diphenylphthalate, about 10 percent to about 20 percent tetraethylene glycol mono-nonylphenolether, about 5 percent to about 10 percent tripropylene glycol, about 5 percent to about 20 percent potassium stearate, about 4 percent to about 10 percent zinc oleate, up to 5 percent cetyl alcohol, and about 15 percent to about 20 percent petrolatum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |