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Patent US4544711A successfully refreshed from Google Patents.
US4544711A
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Process for making terminally functional polymers
Assignee: Sartomer Co Inc
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Filing: 1984-06-15
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Granted: 1985-10-01
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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. 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 23:18
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08F; C08F290/00; C08F290/02; C08F290/04; C08F290/044; C08F8/00; C08F8/02; C08G75/00; C08G75/02; C08F2800/00; C08F2800/10; C08F2810/00; C08F2810/30; C08F2810/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
A method for making functionally terminated polymers comprising polymerizing monomers susceptible to anionic polymerization with an alkyllithium initiator to a polymer chain of number average molecular weight of between 300 and 150,000, reacting the polymer chain with an alkylene sulfide and then terminating the chains with a halogenated compound containing a polymerizable moiety to form a macromolecular monomer of 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
Independent Claim
139 words
A method for making functionally terminated polymers comprising polymerizing monomers susceptible to anionic polymerization with an alkyllithium initiator to a polymer chain of number average molecular weight of between 300 and 150,000, reacting the polymer chain with an alkylene sulfide and then terminating the chains with a halogenated compound containing a polymerizable moiety to form a macromolecular monomer of 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
27 words
The method of claim 1 wherein said monomer susceptible to anionic polymerization is selected from the group consisting of styrene, substituted styrenes, isoprene, butadiene, and mixtures thereof.
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein said alkylene sulfide is selected from the group consisting of ethylene sulfide and propylene sulfide.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein said radical 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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |