US3094434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of polymeric materials
Assignee: Imperial Chemical Industries Ltd
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Filing: 1959-08-12
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Granted: 1963-06-18
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Expires: 1979-08-12
Abstract
No abstract record available.
Inventors
- 👤 Chapman John Frederick
- 👤 Cundall John Henry
- 👤 Partridge John Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:17
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08G2110/00; C08G2110/0008; C08G2110/0025; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083; C08G2150/00; C08G2150/60; C08J2375/00; C08J2375/04; C08J2375/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS FOR THE MANUFACTURE OF FOAMED POLYURETHANE MATERIALS IN A SINGLE STAGE WHICH CONSISTS ESSENTIALLY OF SIMULTANEOUSLY CONTACTING AS THE SOLE REACTING MATERIALS WATER, AN ORGANIC POLYISOCYANATE AND A HYDROXYLCONTAINING POLYETHER CONTAINING AT LEAST TWO HYDROXYL GROUPS AND AT LEAST ONE TERTIARY AMINO GROUP AND HAVING A MOLECULAR WEIGHT OF LESS THAN 1000, SAID POLYETHER BEING THE REACTION PRODUCT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND ALIPHATIC, ARALIPHATIC AND CYCLOALIPHATIC PRIMARY AND SECONDARY AMINES HAVING AT LEAST 2 AVAILABLE ACTIVE HYDROGEN ATOMS ATTACHED TO NITROGEN IN EACH MOLECULE WITH 2 TO 40 MOLES PER AVAILABLE ACTIVE HYDROGEN OF A 1:2 ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE AND PROPYLENE OXIDE.
Claim 2
Dependent Claim
118 words
A PROCESS FOR THE MANUFACTURE OF FOAMED POLYURETHANE MATERIALS IN A SINGLE STAGE WHICH CONSISTS ESSENTIALLY OF SIMULTANEOUSLY CONTACTING AS THE SOLE REACTING MATERIALS WATER, AN ORGANIC POLYISOCYANATE AND A HYDROXYLCONTAINING POLYETHER CONTAINING AT LEAST TWO HYDROXYL GROUPS AND AT LEAST ONE TERTIARY AMINO GROUP AND HAVING A MOLECULAR WEIGHT OF LESS THAN 1000, SAID POLYETHER BEING THE REACTION PRODUCT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND ALIPHATIC, ARALIPHATIC AND CYCLOALIPHATIC PRIMARY AND SECONDARY AMINES HAVING AT LEAST 2 AVAILABLE ACTIVE HYDROGEN ATOMS ATTACHED TO NITROGEN IN EACH MOLECULE WITH 2 TO 40 MOLES PER AVAILABLE ACTIVE HYDROGEN OF A 1:2 ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE AND PROPYLENE OXIDE.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |