Patent US2983352A successfully refreshed from Google Patents.
Patent US425359A successfully refreshed from Google Patents.
Patent DE51997C successfully refreshed from Google Patents.
Patent US2183448A successfully refreshed from Google Patents.
Patent US3208985A successfully refreshed from Google Patents.
US3208985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization with a heavy metal compound-organohydrogen siloxane catalyst
Assignee: Wacker Chemie AG
•
Filing: 1958-12-01
•
Granted: 1965-09-28
•
Expires: 1978-12-01
Abstract
No abstract record available.
Inventors
- 👤 Piekarski Gottfried
- 👤 Reinecke Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:19
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/06; C08F4/12; C08F4/16; C08F4/18; C08F4/20; C08F4/22; C08F4/24; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/398; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/22; C08F210/00; C08F210/02; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A METHOD OF PREPARING A CATALYST SYSTEM FOR USE IN POLYMERIZATION REACTIONS OF OLEFINIC COMPOUNDS CONSISTING OF ADMIXING COMPONENT (A) AN ORGANOHYDROGENSILOXANE POLYMER CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA RN-SI(-H)-O((3-N)/2) WHERE N HAS A VALUE FROM 0 TO 3 INCLUSIVE AND EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOMS, ALKYL RADICALS, CYCLOALKYL RADICALS, ARYL RADICALS, ALKOXY RADICALS, CYCLOALKOXY RADICALS, ARYLOXY RADICALS AND HALOGENATED, ALKOYLATED AND HYDROXYLATED DERIVATIVES OF THE FOREGOING RADICALS WITH COMPONENT (B) A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF OXYHALIDES, ACETYL ACETONATES, HYDROCARBON ESTERS AND DICYCLOPENTADIENYL COMPOUNDS OT TI, ZR, HF, TH, V, NB, TA, CR, MO, W AND U.
Claim 2
Independent Claim
110 words
A METHOD OF PREPARING A CATALYST SYSTEM FOR USE IN POLYMERIZATION REACTIONS OF OLEFINIC COMPOUNDS CONSISTING OF ADMIXING COMPONENT (A) AN ORGANOHYDROGENSILOXANE POLYMER CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA RN-SI(-H)-O((3-N)/2) WHERE N HAS A VALUE FROM 0 TO 3 INCLUSIVE AND EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOMS, ALKYL RADICALS, CYCLOALKYL RADICALS, ARYL RADICALS, ALKOXY RADICALS, CYCLOALKOXY RADICALS, ARYLOXY RADICALS AND HALOGENATED, ALKOYLATED AND HYDROXYLATED DERIVATIVES OF THE FOREGOING RADICALS WITH COMPONENT (B) A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF OXYHALIDES, ACETYL ACETONATES, HYDROCARBON ESTERS AND DICYCLOPENTADIENYL COMPOUNDS OT TI, ZR, HF, TH, V, NB, TA, CR, MO, W AND U.
Claim 3
Independent Claim
134 words
A METHOD OF POLYMERIZING AN OLEFINIC MONOMER CONSISTING ESSENTIALLY OF CONTACTING SAID MONOM ER WITH A CATALYST SYSTEM AT A PRESSURE OF 1 TO 100 ATMOSPHERES AND A TEMPERATURE OF 30* TO 200*C. SAID CATALYST SYSTEM COMPRISING A PRODUCT PREPARED BY MIXING COMPONENT (A) AN ORGANOHYDROGENSILOXANE POLYMER CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA RN-SI(-H)-O((3-N)/2) WHERE N HAS A VALUE FROM 0 TO 3 INCLUSIVE AND EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOMS, ALKYL RADICALS, CYCLOALKYL RADICALS, ARYL RADICALS, ALKOXY RADICALS, CYCLOALKOXY RADICALS, ARYLOXY RADICALS AND HALOGENATED, ALKOXYLATED AND HYDROXYLATED DERIVATIVES OF THE FOREGOING RADICALS AND COMPONENT (B) A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF OXYHALIDES, ACETYL ACETONATES, HYDROCARBON ESTERS AND DICYCLOPENTADIENYL COMPOUNDS OF TI, ZR, HF, TH, V, NB, TA, CR, MO, W AND U.
Claim 4
Independent Claim
134 words
A METHOD OF POLYMERIZING AN OLEFINIC MONOMER CONSISTING ESSENTIALLY OF CONTACTING SAID MONOM ER WITH A CATALYST SYSTEM AT A PRESSURE OF 1 TO 100 ATMOSPHERES AND A TEMPERATURE OF 30* TO 200*C. SAID CATALYST SYSTEM COMPRISING A PRODUCT PREPARED BY MIXING COMPONENT (A) AN ORGANOHYDROGENSILOXANE POLYMER CONSISTING ESSENTIALLY OF UNITS OF THE FORMULA RN-SI(-H)-O((3-N)/2) WHERE N HAS A VALUE FROM 0 TO 3 INCLUSIVE AND EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN ATOMS, ALKYL RADICALS, CYCLOALKYL RADICALS, ARYL RADICALS, ALKOXY RADICALS, CYCLOALKOXY RADICALS, ARYLOXY RADICALS AND HALOGENATED, ALKOXYLATED AND HYDROXYLATED DERIVATIVES OF THE FOREGOING RADICALS AND COMPONENT (B) A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF OXYHALIDES, ACETYL ACETONATES, HYDROCARBON ESTERS AND DICYCLOPENTADIENYL COMPOUNDS OF TI, ZR, HF, TH, V, NB, TA, CR, MO, W AND U.
References Cited (Backward Citations)
US2341286A
Cited
US2441214A
Cited
US2908593A
Cited
GB785314A
Cited
US2840551A
Cited
US2832759A
Cited
BE554242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |