Patent US3222305A successfully refreshed from Google Patents.
US3222305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-resistant urethane foams and process for preparing same
Assignee: Union Carbide Corp
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Filing: 1962-11-23
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Granted: 1965-12-07
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 William M Lanham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:13
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G18/546; C08J2375/00; C08J2375/04; C08J2427/00; Y; Y10; Y10S; Y10S521/00; Y10S521/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR THE PRODUCTION OF FLAME RESISTANT POLYURETHANE FOAMS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH A POLYOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 350 TO ABOUT 7500 AND WHICH HAS AT LEAST 2 ALCOHOLIC HYDROXYL GROUPS, SAID POLYOL COMPRISING THE ALKYLENE OXIDE ADDUCT OF AN AROMATIC AMINE-PHENOL-FORMALDEHYDE CONDENSATION PRODUCT; WHEREIN THE REACTION OF SAID ORGANIC POLYISOCYANATE AND SAID POLYOL TAKES PLACE IN THE PRESENCE OF A CATALYST, BLOWING AGENT, EMULSIFIER, FROM ABOUT 0.5 TO ABOUT 5.0 WEIGHT PERCENT ANTIMONY TRIOXIDE, AND FROM ABOUT 1.0 TO ABOUT 10.0 WEIGHT PERCENT OF VINYL CHLORIDE POLYMER, THE PERCENTAGES BEING BASED UPON WEIGHT OF POLYOL PLUS ORGANIC POLYISOCYANATE; AND WHEREIN SAID AROMATIC AMINE-PHENOLFORMALDEHYDE CONDENSATION PRODUCT IS PRODUCED FROM (A) AN AROMATIC AMINE OF THE FORMULA
Claim 2
Dependent Claim
127 words
A PROCESS FOR THE PRODUCTION OF FLAME RESISTANT POLYURETHANE FOAMS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH A POLYOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 350 TO ABOUT 7500 AND WHICH HAS AT LEAST 2 ALCOHOLIC HYDROXYL GROUPS, SAID POLYOL COMPRISING THE ALKYLENE OXIDE ADDUCT OF AN AROMATIC AMINE-PHENOL-FORMALDEHYDE CONDENSATION PRODUCT; WHEREIN THE REACTION OF SAID ORGANIC POLYISOCYANATE AND SAID POLYOL TAKES PLACE IN THE PRESENCE OF A CATALYST, BLOWING AGENT, EMULSIFIER, FROM ABOUT 0.5 TO ABOUT 5.0 WEIGHT PERCENT ANTIMONY TRIOXIDE, AND FROM ABOUT 1.0 TO ABOUT 10.0 WEIGHT PERCENT OF VINYL CHLORIDE POLYMER, THE PERCENTAGES BEING BASED UPON WEIGHT OF POLYOL PLUS ORGANIC POLYISOCYANATE; AND WHEREIN SAID AROMATIC AMINE-PHENOLFORMALDEHYDE CONDENSATION PRODUCT IS PRODUCED FROM (A) AN AROMATIC AMINE OF THE FORMULA
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |