Patent US4567239A successfully refreshed from Google Patents.
US4567239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of terminally functional polymers
Assignee: Lyondell Chemical Technology LP
•
Filing: 1984-06-15
•
Granted: 1986-01-28
•
Expires: 2004-06-15
Abstract
Abstract The alkyllithium initiated preparation of terminally functional polymers in high yield is accomplished by first capping a macromolecular polymer with an alkylene sulfide prior to terminating the molecule with a halogenated compound containing a polymerizable moiety. The resulting macromolecular monomers are useful in the preparation of graft copolymers by copolymerizing the macromolecular monomers with monomers copolymerizable therewith.
Inventors
- 👤 Paul A. Mancinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:55
CPC Classifications
C; C08; C08F; C08F293/00; Y; Y10; Y10S; Y10S525/00; Y10S525/91
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
Copolymer formed by copolymerizing (a) from 1 to 95% by weight of a macromolecular monomer having the general formula ##STR3## where A is the alkyl portion of an alkyllithium initiator, Z is a repeating monomeric unit of a monomer susceptible to anionic polymerizaton, n is a positive integer from 3 to 1500, R is either hydrogen, C 1 -C 10 alkyl, or phenyl, x is a positive integer of at least 1, and R' is a radical formed by removal of halogen from a halogenated compound containing a moiety polymerizable by free-radical, cationic, or anionic initiators and (b) 99 to 5% by weight of a monomer or monomers copolymerizable therewith by free-radical, cationic, or anionic initiation.
Claim 2
Dependent Claim
116 words
Copolymer formed by copolymerizing (a) from 1 to 95% by weight of a macromolecular monomer having the general formula ##STR3## where A is the alkyl portion of an alkyllithium initiator, Z is a repeating monomeric unit of a monomer susceptible to anionic polymerizaton, n is a positive integer from 3 to 1500, R is either hydrogen, C 1 -C 10 alkyl, or phenyl, x is a positive integer of at least 1, and R' is a radical formed by removal of halogen from a halogenated compound containing a moiety polymerizable by free-radical, cationic, or anionic initiators and (b) 99 to 5% by weight of a monomer or monomers copolymerizable therewith by free-radical, cationic, or anionic initiation.
Claim 3
Dependent Claim
24 words
The copolymer of claim 1 wherein the macromolecular monomer is a 5,000 molecular weight, epoxy terminated macromolecular monomer and said copolymerizable monomer is tetrahydrofuran.
Claim 4
Dependent Claim
26 words
The copolymer of claim 1 wherein said macromolecular monomer is a 13,000 molecular weight vinylphenyl terminated polystyrene macromolecular monomer and said copolymerizable monomer is n-butyl acrylate.
Claim 5
Dependent Claim
26 words
The copolymer of claim 1 wherein said copolymerizable monomer is selected from one or more monomers from the group consisting of acrylates, methacrylates, acrylonitriles, and styrene.
References Cited (Backward Citations)
US3786117A
Cited
US3689593A
Cited
US3786116A
Cited
US3846393A
Cited
US4169115A
Cited
US4442261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |