US3755222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dense polyurethane compounds which contain zeolite having a pore size of 3 a
Assignee: Bayer AG
•
Filing: 1972-08-15
•
Granted: 1973-08-28
•
Expires: 1992-08-15
Abstract
Abstract A process is provided for the production of non-cellular polyurethane resins wherein an organic polyisocyanate is reacted with a compound containing at least two hydrogen atoms reactive with NCO groups in the presence of a dehydrated zeolite of the sodium potassium aluminosilicate type having an average molar composition of about (0.05 to 0.40) Na2O. (0.50 to 0.95) K2O . Al2O3 . (1.9 + OR - 0.1) SiO2 with a molar (Na2O + K2O) / A12O3 ratio of about (0.9 + OR - 0.1):1, a crystalline structure identifiable by the most intense X-ray interferences at d 12.3, 8.7, 7.1, 5.5, 4.1, 3.7, 3.4, 3.3, 3.0, 2.9, 2.8 A. + OR - 0.1 A. and a pore size of about 3 A.
Inventors
- 👤 H Gruber
- 👤 H Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:25
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/088; C08G18/0885; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; Y; Y10; Y10S; Y10S260/00; Y10S260/33
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
31 words
The process of claim 1 wherein the zeolite is converted into a paste by mixing it with any of the liquid components of the polyurethane reaction mixture other than the isocyanate.
Claim 2
Dependent Claim
12 words
The process of claim 2 wherein the liquid component is castor oil.
Claim 3
Dependent Claim
84 words
A substantially non-porous polyurethane containing sodium potassium aluminosilicate having an average molar composition of about (0.05 to 0.40) Na2O . (0.50 to 0.95) K2O . Al2O3 . (1.9 + or - 0.1) SiO2 with a molAr (Na2O + K2O)/Al2O3 ratio of about (0.9 + or - 0.1):1, a crystalline structure identifiable by the most intense X-ray interferences at d 12.3, 8.7, 7.1, 5.5, 4.1, 3.7, 3.4, 3.3., 3.0, 2.9, 2.8 A. + or - 0.1 A. and a pore size of about 3 A.
Claim 4
Dependent Claim
24 words
The substantially non-porous polyurethane of claim 4 which contains from about 0.5 to about 25 per cent by weight of the sodium potassium aluminosilicate.
Claim 5
Dependent Claim
24 words
The substantially non-porous polyurethane of claim 5 which contains from about 1 to about 10 per cent by weight of the sodium potassium aluminosilicate.
Claim 6
Dependent Claim
87 words
A container having a polyurethane coating which contains sodium potassium aluminosilicate having an average molar composition of about (0.05 to 0.40) Na2O . (0.50 to 0.95) K2O . Al2O3 . (1.9 + or - 0.1) SiO2 with a molar (Na2O + K2O)/Al2O3 ratio of about (0.9 + or - 0.1):1, a crystalline structure identifiable by the most intense X-ray interferences at d 12.3, 8.7, 7.1, 5.5, 4.1, 3.7, 3.4, 3.3, 3.0, 2.9, 2.8 A. + or - 0.1 A. and a pore size of about 3 A.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |