Patent US4543395A successfully refreshed from Google Patents.
US4543395A
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Terminally functional polymers
Assignee: Sartomer Co Inc
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Filing: 1984-06-15
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Granted: 1985-09-24
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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.
Inventors
- 👤 Paul A. Mancinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:06
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F; C08F290/00; C08F290/02; C08F290/04; C08F290/044; C08F8/00; C08F8/02; C08G; C08G59/00; C08G59/02; C08G75/00; C08G75/02; C08F2800/00; C08F2800/10; C08F2810/00; C08F2810/30; C08F2810/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
85 words
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 polymerization, n is a positive interger 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 the halogen from a halogenated compound containing a moiety polymerizable by free-radical, cationic, or anionic initiators.
Claim 2
Dependent Claim
85 words
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 polymerization, n is a positive interger 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 the halogen from a halogenated compound containing a moiety polymerizable by free-radical, cationic, or anionic initiators.
Claim 3
Dependent Claim
30 words
The macromolecular monomer of claim 1 wherein Z is a repeating monomeric unit of a monomer selected from the group consisting of styrene, substituted styrenes, isoprene, butadiene, and mixtures thereof.
Claim 4
Dependent Claim
14 words
The macromolecular monomer of claim 1 wherein R is either hydrogen, methyl, or phenyl.
Claim 5
Dependent Claim
14 words
The macromolecular monomer of claim 1 wherein R' is either glycidyl or vinylbenzyl radical.
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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |