US2576241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye fixing product and process and treating of textiles therewith
Assignee: Dan River Mills Inc
•
Filing: 1950-04-03
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Granted: 1951-11-27
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Expires: 1970-04-03
Abstract
No abstract record available.
Inventors
- 👤 Spangler Myrtle Joanne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:59
CPC Classifications
C; C07; C07F; C07F1/00; C07F1/005; D; D06; D06P; D06P1/00; D06P1/44; D06P1/52; D06P1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS OF PRODUCING A CONDENSATION PRODUCT SUITABLE FOR FIXING SUBSTANTIVE DYES ON TEXTILES, COMPRISING REACTING DICYANDIAMIDE WITH A COPPER SALT SELECTED FROM THE GROUP CONSISTING OF COPPER CHLORIDE AND COPPER NITRATE, TO EFFECT HYDROLYSIS OF SAID DICYANDIAMIDE AND THE COMBINING THEREOF WITH THE COPPER TO PRODUCE A COPPER COMPLEX, AND THEN REACTING THE COPPER COMPLEX WITH FORMALDEHYDE IN SOLUTION OF AN ACID SELCTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND NITRIC ACID TO PRODUCE A CONDENSATION PRODUCT OF IDCYANDIAMIDE, COPPER COMPLEX AND FORMALDEHYDE.
Claim 2
Dependent Claim
85 words
A PROCESS OF PRODUCING A CONDENSATION PRODUCT SUITABLE FOR FIXING SUBSTANTIVE DYES ON TEXTILES, COMPRISING REACTING DICYANDIAMIDE WITH A COPPER SALT SELECTED FROM THE GROUP CONSISTING OF COPPER CHLORIDE AND COPPER NITRATE, TO EFFECT HYDROLYSIS OF SAID DICYANDIAMIDE AND THE COMBINING THEREOF WITH THE COPPER TO PRODUCE A COPPER COMPLEX, AND THEN REACTING THE COPPER COMPLEX WITH FORMALDEHYDE IN SOLUTION OF AN ACID SELCTED FROM THE GROUP CONSISTING OF HYDROCHLORIC ACID AND NITRIC ACID TO PRODUCE A CONDENSATION PRODUCT OF IDCYANDIAMIDE, COPPER COMPLEX AND FORMALDEHYDE.
References Cited (Backward Citations)
US2207442A
Cited
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Cited
US2364726A
Cited
US2405863A
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US2440988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |