US4751276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing functional alpha-olefin polymers and copolymers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1987-07-27
•
Granted: 1988-06-14
•
Expires: 2007-07-27
Abstract
Abstract The present invention relates to a process for the preparation of functional alpha-olefin homo- and copolymers by polymerization through a borane monomer intermediate. Borane monomers, derived from mono-hydroboration of appropriate dienes with dialkyl borane, have been found to be stable to Ziegler-Natta catalysts. In turn, the borane homo- and copolymers are easily converted to a variety of other functionalities; e.g., alcohols, aldehydes, amines, etc.
Inventors
- 👤 Tze-Chiang Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:28
CPC Classifications
C; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A process for the preparation of a homopolymer having the formula: ##STR2## wherein n=6 to 12 and R 1 and R 2 are alkyl or cycloalkyl groups, which comprises the steps of: (a) mixing under an inert atmosphere in a container TiCl 3 ·AA, Al(Et) 2 Cl and an aromatic solvent to form a solution of catalyst; (b) adding at room temperature with mixing a monomer having the formula: ##STR3## wherein n=6 to 12 and R 1 and R 2 are alkyl or cycloalkyl groups to said catalyst solution; and (c) reacting said monomer for a sufficient time to form said homopolymer.
Claim 2
Dependent Claim
102 words
A process for the preparation of a homopolymer having the formula: ##STR2## wherein n=6 to 12 and R 1 and R 2 are alkyl or cycloalkyl groups, which comprises the steps of: (a) mixing under an inert atmosphere in a container TiCl 3 ·AA, Al(Et) 2 Cl and an aromatic solvent to form a solution of catalyst; (b) adding at room temperature with mixing a monomer having the formula: ##STR3## wherein n=6 to 12 and R 1 and R 2 are alkyl or cycloalkyl groups to said catalyst solution; and (c) reacting said monomer for a sufficient time to form said homopolymer.
Claim 3
Dependent Claim
70 words
A process for preparing a homopolymer having the formula: ##STR4## wherein n=6 to 12 which comprises the steps of: (a) dissolving a polyborane homopolymer in THF solvent, said polyborane homopolymer having the formula: ##STR5## wherein n=6 to 12; and (b) adding a NaOH solution and H 2 O 2 to the solution of polyborane homopolymer, said polyborane being converted to said homopolymer having the formula: ##STR6## wherein n=6 to 12.
Claim 4
Dependent Claim
70 words
A process for preparing a homopolymer having the formula: ##STR4## wherein n=6 to 12 which comprises the steps of: (a) dissolving a polyborane homopolymer in THF solvent, said polyborane homopolymer having the formula: ##STR5## wherein n=6 to 12; and (b) adding a NaOH solution and H 2 O 2 to the solution of polyborane homopolymer, said polyborane being converted to said homopolymer having the formula: ##STR6## wherein n=6 to 12.
Claim 5
Dependent Claim
69 words
A process for preparing a homopolymer having the formula: ##STR7## wherein n=6 to 12; which comprises the steps of: (a) dissolving a polyborane homopolymer in THF solvent, said polyborane homopolymer having the formula: ##STR8## wherein n=6 to 12, and (b) adding NH 2 OSO 3 R to the solution of the polyborane homopolymer, said polyborane homopolymer being converted to said homopolymer having the formula: ##STR9## wherein n=6 to 12.
Claim 6
Dependent Claim
69 words
A process for preparing a homopolymer having the formula: ##STR7## wherein n=6 to 12; which comprises the steps of: (a) dissolving a polyborane homopolymer in THF solvent, said polyborane homopolymer having the formula: ##STR8## wherein n=6 to 12, and (b) adding NH 2 OSO 3 R to the solution of the polyborane homopolymer, said polyborane homopolymer being converted to said homopolymer having the formula: ##STR9## wherein n=6 to 12.
Claim 7
Dependent Claim
76 words
A process for preparing a homopolymer having the formula: ##STR10## wherein n=6 to 12; which comprises the steps of: (a) dissolving a polyborane homopolymer in THF solvent, said polyborane homopolymer having the formula: ##STR11## wherein n=6 to 12; and (b) adding a mixture of CO and K(i-C 3 H 7 O) 3 BH to the solution of the polyborane homopolymer, said polyborane homopolymer being converted to said homopolymer having the formula: ##STR12## wherein n=6 to 12.
Claim 8
Dependent Claim
76 words
A process for preparing a homopolymer having the formula: ##STR10## wherein n=6 to 12; which comprises the steps of: (a) dissolving a polyborane homopolymer in THF solvent, said polyborane homopolymer having the formula: ##STR11## wherein n=6 to 12; and (b) adding a mixture of CO and K(i-C 3 H 7 O) 3 BH to the solution of the polyborane homopolymer, said polyborane homopolymer being converted to said homopolymer having the formula: ##STR12## wherein n=6 to 12.
References Cited (Backward Citations)
US2457603A
Cited
US3128254A
Cited
US3093687A
Cited
US3399175A
Cited
US3492277A
Cited
US3852314A
Cited
US3880689A
Cited
US3900320A
Cited
US4439542A
Cited
US4511454A
Cited
US4539278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |