US3314902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized masterbatch for preparing fire-retardant polyurethane foams
Assignee: PPG Industries Inc
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Filing: 1965-10-21
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Granted: 1967-04-18
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Wismer Marco
- 👤 Herman P Doerge
- 👤 Paul R Mosso
- 👤 James F Foote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6688; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5075; C08G18/5081; C08G18/5084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A STABILIZED MASTERBATCH SUITABLE FOR INCORPORATION WITH AN ORGANIC POLYISOCYANATE TO FORM A FIRE-RETARDANT, CELLULATED POLYURETHANE, SAID MASTERBATCH COMPRISING: (A) A POLYOL WHICH IS THE REACTION PROFUCT OF: (1) A POLYHYDROXY COMPOUND CONTAINING ABOUT 3 TO ABOUT 8 HYDROXYL GROUPS PER MOLECULE, WITH (2) AN ALKYLENE OXIDE, (B) A PHOSPHORUS-CONTAINING POLYOL RESULTING FROM REACTING: (1) AN ALKYLENE OXIDE CONTAINING FROM ABOUT 2 TO ABOUT 6 CARBON ATOMS PER MOLECULE, WITH (2) AN ACID OF PHOSPHORU HAVING AT LEAST ONE OH GROUP ATTACHED TO THE PHOSPHORUS ATOM; (C) A STABILIZING AMOUNT OF KPOLYHYDROXYALKYL AMINE WHICH HAS THE STRUCTURE OF THE REACTION PRODUCT OF AN AMINE CONTAINING AT LEAST TWO ACTIVE HYDROGEN ATOMS WITH AN ALKYLENE OXIDE CONTAINING 2 TO 4 CARBON ATOMS PER MOLECULE, SAID POLYHYDROXYALKYL AMINE BEING TO SOLE STABILIZER ADDED TO THE MIXTURE; (D) A BLOWING AGENT FOR CELLULATION OF POLYURETHANE RESIN, AND (E) A CATALYST OF URETHANE FORMATION.
Claim 2
Dependent Claim
150 words
A STABILIZED MASTERBATCH SUITABLE FOR INCORPORATION WITH AN ORGANIC POLYISOCYANATE TO FORM A FIRE-RETARDANT, CELLULATED POLYURETHANE, SAID MASTERBATCH COMPRISING: (A) A POLYOL WHICH IS THE REACTION PROFUCT OF: (1) A POLYHYDROXY COMPOUND CONTAINING ABOUT 3 TO ABOUT 8 HYDROXYL GROUPS PER MOLECULE, WITH (2) AN ALKYLENE OXIDE, (B) A PHOSPHORUS-CONTAINING POLYOL RESULTING FROM REACTING: (1) AN ALKYLENE OXIDE CONTAINING FROM ABOUT 2 TO ABOUT 6 CARBON ATOMS PER MOLECULE, WITH (2) AN ACID OF PHOSPHORU HAVING AT LEAST ONE OH GROUP ATTACHED TO THE PHOSPHORUS ATOM; (C) A STABILIZING AMOUNT OF KPOLYHYDROXYALKYL AMINE WHICH HAS THE STRUCTURE OF THE REACTION PRODUCT OF AN AMINE CONTAINING AT LEAST TWO ACTIVE HYDROGEN ATOMS WITH AN ALKYLENE OXIDE CONTAINING 2 TO 4 CARBON ATOMS PER MOLECULE, SAID POLYHYDROXYALKYL AMINE BEING TO SOLE STABILIZER ADDED TO THE MIXTURE; (D) A BLOWING AGENT FOR CELLULATION OF POLYURETHANE RESIN, AND (E) A CATALYST OF URETHANE FORMATION.
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |