US2852489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic aminoplasts prepared from toluene sulfonamide and a methylol amino compound
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-01-12
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Granted: 1958-09-16
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Expires: 1974-01-12
Abstract
No abstract record available.
Inventors
- 👤 Anas Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; C08G12/04; C08G12/043; C08G12/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PERMANENTLY THERMOPLASTIC COMPOSITION AS PREPARED BY HEATING TOLUENE SULFONAMIDE TO A TEMPERATURE OF FROM 105-160*C. UNTIL IT IS FLUID AND WHILE MAINTAINING SAID TEMPERATURE ADDING SLOWING WITH VIGOROUS AGITATION A METHYLOL AMINO COMPOUND, THE AMOUNT OF TOLUENE SULFONAMIDE BEING EQUIVALENT ON A MOLAR BASIS TO THE NUMBER OF METHYLOL GROUPS ON THE METHYLOL AMINO COMPOUND AND THE METHYLOL AMINO COMPOUND BEING TAKEN FROM THE GROUP CONSISTING OF THE FORMALDEHYDE CNDENSATION PRODUCTS OF UREA, THIOUREA, DICYANDIAMIDE AND POLYAMINO 1,3,5-TRIAZINES ESSENTIALLY FREE OF UNREACTED FORMALDEHYDE.
Claim 2
Dependent Claim
84 words
A PERMANENTLY THERMOPLASTIC COMPOSITION AS PREPARED BY HEATING TOLUENE SULFONAMIDE TO A TEMPERATURE OF FROM 105-160*C. UNTIL IT IS FLUID AND WHILE MAINTAINING SAID TEMPERATURE ADDING SLOWING WITH VIGOROUS AGITATION A METHYLOL AMINO COMPOUND, THE AMOUNT OF TOLUENE SULFONAMIDE BEING EQUIVALENT ON A MOLAR BASIS TO THE NUMBER OF METHYLOL GROUPS ON THE METHYLOL AMINO COMPOUND AND THE METHYLOL AMINO COMPOUND BEING TAKEN FROM THE GROUP CONSISTING OF THE FORMALDEHYDE CNDENSATION PRODUCTS OF UREA, THIOUREA, DICYANDIAMIDE AND POLYAMINO 1,3,5-TRIAZINES ESSENTIALLY FREE OF UNREACTED FORMALDEHYDE.
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |