Patent US2821484A successfully refreshed from Google Patents.
US2821484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-stable waxes for wax paste
Assignee: Ruhrchemie AG
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Filing: 1954-03-30
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Granted: 1958-01-28
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Expires: 1974-03-30
Abstract
No abstract record available.
Inventors
- 👤 Kolling Helmut
- 👤 Rappen Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:15
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/295; C09; C09G; C09G1/00; C09G1/06; C09G1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
331 words
A NEW WAX COMPONENT FOR A SUBSTANTIALLY TEMPERATURE-STABLE WAS PASTE CONSISTING OF WAX ACID-PARAFFIN MIXTURES HAVING A MOLECULAR SIZE OF AT LEAST C25, THE WAX ACID PORTION OF WHICH HAS BEEN OBTAINED FROM PARAFFIN HYDROCARBONS BY CHLORINATION, DEHYDROCHLORINATION OF THE CHLORINATION PRODUCTS, CATALYTIC ADDITION OF WATER GAS TO THE UNSATURATED HYDROCARBON MIXTURES THEREBY FORMED, HYDROGENATION OF THE PRODUCTS OBTAINED BY THE WATER GAS ADDITION, TREATMENT OF THE HYDROGENATION PRODUCTS WITH MOLTEN ALKALI AND TREATMENT OF THE PRODUCTS OF THE ALKALI TREATMENT WITH MINERAL ACID, AND HAS BEEN PARTIALLY SAPONIFIED WITH CALCIUM OXIDE IN RELATION TO THE MOLECULAR SIZE OF THE WAX ACID-PARAFFIN MIXTURE IN ACCORDANCE WITH THE FOLLOWING TABLE OF THE GROUP CONSISTING OF (A) WHERE THE WAS ACID PARAFFIN MIXTURE HAS A MOLECULAR SIZE OF C30-C40, THE ACID PORTION THEREOF IS SAPONIFIED TO AN EXTENT THAT ABOUT 10-20% OF CALCIUM SOAP IS PRESENT IN THE MIXTURE; (B) WHERE THE WAX ACID-PARAFFIN MIXTURE HAS A MOLECULAR SIZE OF C25-C30, THE ACID PORTION THEREOF IS SAPONIFIED WITH CALCIUM OXIDE IN AMOUNT SUFFICIENT THAT THE WAS ACID-PARAFFIN MIXTURE HAS A CONTENT OF ABOUT 10-30% OF CALCIUM SOAP, AND SUFFICIENT UNSAPONIFIED WAX ACID-PARAFFIN MIXTURES HAVING A MOLECULAR SIZE ABOVE C30 IS ADMIXED THEREWITH SO THAT 0.7-3 PARTS BY WEIGHT OF THE PARTIALLY SAPONIFIED WAX ACID-PARAFFIN MIXTURE HAVING THE MOLECULAR SIZE OF C25-C30 IS PRESENT PER PART BY WEIGHT OF SAID UNSAPONIFIED WAX ACID-PARAFFIN MIXTURE HAVING THE MOLECULAR SIZE ABOVE C30; (C) WHERE THE WAS ACID-PARAFFIN MIXTURE HAS A MOLECULAR SIZE OF C25-C40 THE PARTIAL SAPONIFICATION WITH CALCIUM OXIDE IS EFFECTED TO THE EXTENT THAT THE PARTIALLY SAPONIFIED WAX ACIDPARAFFIN MIXTURE HAS A CALCIUM SOAP CONTENT OF FROM MORE THAN 30% TO ABOUT 50% AND ADMIXED THERETO IS AN UNSAPONIFIED WAX ACID-PARAFFIN MIXTURE OF MOLECULAR SIZE ABOUT C30 TO AN EXTENT THAT 0.2-1 PART BY WEIGH OF SAID PARTIALLY SAPONIFIED WAX ACID-PARAFFIN MIXTURE OF MOLECULAR SIZE OF C25-C40 IS PRESENT PER PART BY WEIGHT OF SAID UNSAPONIFIED WAX ACID-PARAFFIN MIXTURE OF MOLECULAR SIZE ABOVE C30.
Claim 2
Dependent Claim
331 words
A NEW WAX COMPONENT FOR A SUBSTANTIALLY TEMPERATURE-STABLE WAS PASTE CONSISTING OF WAX ACID-PARAFFIN MIXTURES HAVING A MOLECULAR SIZE OF AT LEAST C25, THE WAX ACID PORTION OF WHICH HAS BEEN OBTAINED FROM PARAFFIN HYDROCARBONS BY CHLORINATION, DEHYDROCHLORINATION OF THE CHLORINATION PRODUCTS, CATALYTIC ADDITION OF WATER GAS TO THE UNSATURATED HYDROCARBON MIXTURES THEREBY FORMED, HYDROGENATION OF THE PRODUCTS OBTAINED BY THE WATER GAS ADDITION, TREATMENT OF THE HYDROGENATION PRODUCTS WITH MOLTEN ALKALI AND TREATMENT OF THE PRODUCTS OF THE ALKALI TREATMENT WITH MINERAL ACID, AND HAS BEEN PARTIALLY SAPONIFIED WITH CALCIUM OXIDE IN RELATION TO THE MOLECULAR SIZE OF THE WAX ACID-PARAFFIN MIXTURE IN ACCORDANCE WITH THE FOLLOWING TABLE OF THE GROUP CONSISTING OF (A) WHERE THE WAS ACID PARAFFIN MIXTURE HAS A MOLECULAR SIZE OF C30-C40, THE ACID PORTION THEREOF IS SAPONIFIED TO AN EXTENT THAT ABOUT 10-20% OF CALCIUM SOAP IS PRESENT IN THE MIXTURE; (B) WHERE THE WAX ACID-PARAFFIN MIXTURE HAS A MOLECULAR SIZE OF C25-C30, THE ACID PORTION THEREOF IS SAPONIFIED WITH CALCIUM OXIDE IN AMOUNT SUFFICIENT THAT THE WAS ACID-PARAFFIN MIXTURE HAS A CONTENT OF ABOUT 10-30% OF CALCIUM SOAP, AND SUFFICIENT UNSAPONIFIED WAX ACID-PARAFFIN MIXTURES HAVING A MOLECULAR SIZE ABOVE C30 IS ADMIXED THEREWITH SO THAT 0.7-3 PARTS BY WEIGHT OF THE PARTIALLY SAPONIFIED WAX ACID-PARAFFIN MIXTURE HAVING THE MOLECULAR SIZE OF C25-C30 IS PRESENT PER PART BY WEIGHT OF SAID UNSAPONIFIED WAX ACID-PARAFFIN MIXTURE HAVING THE MOLECULAR SIZE ABOVE C30; (C) WHERE THE WAS ACID-PARAFFIN MIXTURE HAS A MOLECULAR SIZE OF C25-C40 THE PARTIAL SAPONIFICATION WITH CALCIUM OXIDE IS EFFECTED TO THE EXTENT THAT THE PARTIALLY SAPONIFIED WAX ACIDPARAFFIN MIXTURE HAS A CALCIUM SOAP CONTENT OF FROM MORE THAN 30% TO ABOUT 50% AND ADMIXED THERETO IS AN UNSAPONIFIED WAX ACID-PARAFFIN MIXTURE OF MOLECULAR SIZE ABOUT C30 TO AN EXTENT THAT 0.2-1 PART BY WEIGH OF SAID PARTIALLY SAPONIFIED WAX ACID-PARAFFIN MIXTURE OF MOLECULAR SIZE OF C25-C40 IS PRESENT PER PART BY WEIGHT OF SAID UNSAPONIFIED WAX ACID-PARAFFIN MIXTURE OF MOLECULAR SIZE ABOVE C30.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |