US3076690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the chlorination of wool
Assignee: Daito Boshoku KK
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Filing: 1957-05-28
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Granted: 1963-02-05
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Expires: 1977-05-28
Abstract
No abstract record available.
Inventors
- 👤 Hayashi Kumataro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:59
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A PROCESS FOR THE CHLORINATION OF WOOL WHICH COMPRISES PASSING THE WOOL TO BE TREATED THROUGH AN ACIDIC BATH HAVING A PH BETWEEN 1 AND 3 FOR A SHORT TIME OF THE ORDER OF 10-50 SECONDS SO THAT THE WOOL FIBERS WILL BE MADE ACIDIC TO A DEGREE SUFFICIENT TO MAINTAIN THE PH VALUE OF THE CHLORINATING BATH IN THE FOLLOWING STEP AT A VALUE BETWEEN 1 AND 4: CONTINUOUSLY INTRODUCING SAID PRETREATED WOOL WITHOUT INTERVENING CHEMICAL TREATMENT INTO A CHLORINATING BATH AT ONE END THEREOF AND TRANSFERRING IT THERETHROUGH TOWARD THE OTHER END, AND DISTRIBUTING A DILUTE AQUEOUS SOLUTION OF HYPOCHLORITE HAVING A PH BETWEEN 11 AND 6 ON SAID PRETREATED WOOL AS IT IS BEING INTRODUCED INTO THE CHLORINATING BATH SO THAT A PH OF 1 TO 4 WILL BE ESTABLISHHED IN THE CHLORINATING BATH BY INSTANTANEOUS REACTION OF THE DISTURBED HYPOCHLORIDE SOLUTION WITH THE ACID LIERATED FROM THE WOOL FIBERS, WHEREBY SAID DICORINATING BATH IN WHICH SAID WOOL IS IMMERSED HAS A PH OF 1 TO 4 THROUGHOUT THE CHLORINATION OF SAID WOOL.
Claim 2
Dependent Claim
176 words
A PROCESS FOR THE CHLORINATION OF WOOL WHICH COMPRISES PASSING THE WOOL TO BE TREATED THROUGH AN ACIDIC BATH HAVING A PH BETWEEN 1 AND 3 FOR A SHORT TIME OF THE ORDER OF 10-50 SECONDS SO THAT THE WOOL FIBERS WILL BE MADE ACIDIC TO A DEGREE SUFFICIENT TO MAINTAIN THE PH VALUE OF THE CHLORINATING BATH IN THE FOLLOWING STEP AT A VALUE BETWEEN 1 AND 4: CONTINUOUSLY INTRODUCING SAID PRETREATED WOOL WITHOUT INTERVENING CHEMICAL TREATMENT INTO A CHLORINATING BATH AT ONE END THEREOF AND TRANSFERRING IT THERETHROUGH TOWARD THE OTHER END, AND DISTRIBUTING A DILUTE AQUEOUS SOLUTION OF HYPOCHLORITE HAVING A PH BETWEEN 11 AND 6 ON SAID PRETREATED WOOL AS IT IS BEING INTRODUCED INTO THE CHLORINATING BATH SO THAT A PH OF 1 TO 4 WILL BE ESTABLISHHED IN THE CHLORINATING BATH BY INSTANTANEOUS REACTION OF THE DISTURBED HYPOCHLORIDE SOLUTION WITH THE ACID LIERATED FROM THE WOOL FIBERS, WHEREBY SAID DICORINATING BATH IN WHICH SAID WOOL IS IMMERSED HAS A PH OF 1 TO 4 THROUGHOUT THE CHLORINATION OF SAID WOOL.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |