US3297643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric resin of diisocyanate and pentaerythritol-acrolein condensate
Assignee: Delaware Chemicals Inc
•
Filing: 1962-12-28
•
Granted: 1967-01-10
•
Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 Gagliani John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A POLYMERIC RESIN CMPRISING A PLYCONDENSATE OF PENTAERYTHRITOL, AN ALPHA-BETA UNSATURATED ALDEHYDE SELECTED FROM THE CLASS CONSISTING OF ACROLEIN, METHACROLEIN AND CROTON ALDEHYDE, AND AN ORGANIC DIISOCYANATE SELECTED FROM THE CLASS CONSISTING OF TOLUENE DIISOCYANATE, POLYMETHYLENE DIISOCYANATE, POLYPHENYL DIISOCYANATE, 3, 3-DIMETHYL-4, 4-BIPHENYLENE DIISOCYANATE, AND 3,3-DIMETHOXY-4,4-BIPHENYLENE DIISOCYANATE, THE MOL RATIO OF SAID PENTAERYTHRITOL COMPONENT TO SAID ALDEHYDE COMPONENT BEING BETWEEN 1.4:2.0 AND 1.7:2.0, AND THE WEIGHT RATIO OF SAID DIISOCYANATE COMPONENT TO SAID PENTAERYTHRITOL AND ALDEHYDE COMPONENT BEING BETWEEN 0.10:1.0 TO 0.65:1.0.
Claim 2
Dependent Claim
81 words
A POLYMERIC RESIN CMPRISING A PLYCONDENSATE OF PENTAERYTHRITOL, AN ALPHA-BETA UNSATURATED ALDEHYDE SELECTED FROM THE CLASS CONSISTING OF ACROLEIN, METHACROLEIN AND CROTON ALDEHYDE, AND AN ORGANIC DIISOCYANATE SELECTED FROM THE CLASS CONSISTING OF TOLUENE DIISOCYANATE, POLYMETHYLENE DIISOCYANATE, POLYPHENYL DIISOCYANATE, 3, 3-DIMETHYL-4, 4-BIPHENYLENE DIISOCYANATE, AND 3,3-DIMETHOXY-4,4-BIPHENYLENE DIISOCYANATE, THE MOL RATIO OF SAID PENTAERYTHRITOL COMPONENT TO SAID ALDEHYDE COMPONENT BEING BETWEEN 1.4:2.0 AND 1.7:2.0, AND THE WEIGHT RATIO OF SAID DIISOCYANATE COMPONENT TO SAID PENTAERYTHRITOL AND ALDEHYDE COMPONENT BEING BETWEEN 0.10:1.0 TO 0.65:1.0.
References Cited (Backward Citations)
US2755268A
Cited
US2961428A
Cited
US2970985A
Cited
US3087918A
Cited
DE1084914B
Cited
US3120502A
Cited
US3055871A
Cited
US3054803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |