Patent US3855349A successfully refreshed from Google Patents.
US3855349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for imparting fire-proofness to synthetic shaped articles
Assignee: Toyobo Co Ltd
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Filing: 1972-03-17
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Granted: 1974-12-17
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Expires: 1992-03-17
Abstract
Abstract The invention relates to a composition suitable for rendering a shaped article of a synthetic resin fire-proof, which comprises 1. A. A PRECONDENSATE OF A TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND AND UREA OR B. A PRECONDENSATE OF A TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND, UREA AND MELAMINE OR GUANIDINE, 2. A COMPOUND HAVING AT LEAST TWO AMINO GROUPS IN THE MOLECULE AND 3. A METHYLOL RESIN PRECONDENSATE HAVING AT LEAST ONE METHYLOL GROUP IN THE MOLECULE. The invention also includes method of rendering the resin article fireproof with said composition.
Inventors
- 👤 M Date
- 👤 S Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:44
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A COMPOSITION FOR IMPARTING FIRE-PROOFNESS TO A SHAPED ARTICLE OF A SYNTHETIC RESIN, WHICH COMPRISES 100 PARTS BY WEIGHT OF (1) (A) A WATER-SOLUBLE PRECONDENSATE OF A TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND AND UREA OR (B) A WATER-SOLUBLE PRECONDENSATE OF A TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND, UREA AND MELAMINE OR GUANIDINE IN WHICH THE RATIO OF THE AMOUNT OF THE METHYLOL GROUPS IN THE TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND TO THE TOTAL AMOUNT OF THE AMINO GROUPS IN THE UREA, MELAMINE AND GUANIDINE IS AN EQUIVALENT RATIO OF 1:0.1 TO 0.5, (2) 2 TO 20 PARTS BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, THIOUREA, GUANIDINE CARBONATE, GUANIDINE PHOSPHATE AND GUANIDINE HYDROCHLORIDE AND (3) 2 TO 15 PARTS BY WEIGHT OF A METHYLOL RESIN PRECONDENSATE HAVING AT LEAST ONE METHYLOL GROUP IN THE MOLECULE SELECTED FROM THE GROUP CONSISTING OF METHYLOLMELAMINE RESIN, METHYLOLUREA RESIN, METHYLOLURON RESIN, METHYLOLTRIAZONE RESIN, METHYLOLETHYLENEUREA RESIN, METHYLOLPROPYLENEUREA RESIN AND METHYLOLHYDROXYETHYLENEUREA RESIN.
Claim 2
Dependent Claim
156 words
A COMPOSITION FOR IMPARTING FIRE-PROOFNESS TO A SHAPED ARTICLE OF A SYNTHETIC RESIN, WHICH COMPRISES 100 PARTS BY WEIGHT OF (1) (A) A WATER-SOLUBLE PRECONDENSATE OF A TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND AND UREA OR (B) A WATER-SOLUBLE PRECONDENSATE OF A TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND, UREA AND MELAMINE OR GUANIDINE IN WHICH THE RATIO OF THE AMOUNT OF THE METHYLOL GROUPS IN THE TETRAKIS HYDROXYMETHYL PHOSPHONIUM COMPOUND TO THE TOTAL AMOUNT OF THE AMINO GROUPS IN THE UREA, MELAMINE AND GUANIDINE IS AN EQUIVALENT RATIO OF 1:0.1 TO 0.5, (2) 2 TO 20 PARTS BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, THIOUREA, GUANIDINE CARBONATE, GUANIDINE PHOSPHATE AND GUANIDINE HYDROCHLORIDE AND (3) 2 TO 15 PARTS BY WEIGHT OF A METHYLOL RESIN PRECONDENSATE HAVING AT LEAST ONE METHYLOL GROUP IN THE MOLECULE SELECTED FROM THE GROUP CONSISTING OF METHYLOLMELAMINE RESIN, METHYLOLUREA RESIN, METHYLOLURON RESIN, METHYLOLTRIAZONE RESIN, METHYLOLETHYLENEUREA RESIN, METHYLOLPROPYLENEUREA RESIN AND METHYLOLHYDROXYETHYLENEUREA RESIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |