US4524188A
Expired / Lapsed
US
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Synthesis and copolymerization of asymmetric polymers
Assignee: University of Akron
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Filing: 1983-05-02
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Granted: 1985-06-18
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Expires: 2003-05-02
Abstract
Abstract The invention encompasses the synthesis of telechelic, i.e., terminally functional, macromolecular monomers (macromers) and their subsequent homo- and copolymerization. The macromers produced are asymmetric, having dissimilar head and tail groups which provide independent reaction sites. Macromers include α-phenyl-ω-t-chloropolyisobutylene, which can be reacted to form poly(methyl methacrylate-g-isobutylene). The graft copolymers provide novel physical properties which are the product of the respective grafts.
Inventors
- 👤 Joseph P. Kennedy
- 👤 Misao Hiza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:10
CPC Classifications
C; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
An asymmetrically telechelic polymer, comprising: A--PIB--B wherein PIB is a polyisobutylene backbone, and A and B are different, wherein A is selected from the group consisting of phenyl and substituted phenyl, wherein said substitution may be at any position and is selected from the group consisting of vinyl, --SO 3 .sup.⊖, --OH, --NO 2 , --NH 2 , and alkyl groups having from 1 to 10 carbon atoms; and wherein B is selected from the group consisting of methacrylate, hydroxyl, and vinylidene.
Claim 2
Dependent Claim
82 words
An asymmetrically telechelic polymer, comprising: A--PIB--B wherein PIB is a polyisobutylene backbone, and A and B are different, wherein A is selected from the group consisting of phenyl and substituted phenyl, wherein said substitution may be at any position and is selected from the group consisting of vinyl, --SO 3 .sup.⊖, --OH, --NO 2 , --NH 2 , and alkyl groups having from 1 to 10 carbon atoms; and wherein B is selected from the group consisting of methacrylate, hydroxyl, and vinylidene.
Claim 3
Dependent Claim
22 words
An asymmetrically telechelic polymer according to claim 1, wherein the polymer has a molecular weight of from about 1,000 to about 100,000.
Claim 4
Dependent Claim
26 words
An asymmetrically telechelic polymer according to claim 2, wherein A is a phenyl group and B is selected from the group consisting of hydroxyl and methacrylate.
Claim 5
Dependent Claim
24 words
An asymmetric polymer according to claim 3, wherein said polymer is polyisobutenyl methacrylate having a molecular weight of from about 1,500 to about 15,000.
Claim 6
Dependent Claim
13 words
An asymmetric polymer according to claim 3, wherein said polymer is polyisobutenyl alcohol.
Claim 7
Dependent Claim
13 words
An asymmetric polymer according to claim 2, wherein said polymer is α-phenyl-ω-phenol polyisobutylene.
Claim 8
Dependent Claim
92 words
A homopolymer, comprising: the product of homopolymerization of an asymmetric polymer having the formula: A--PIB--B A--PIB--B wherein PIB is a polyisobutylene backbone, and A and B are different, wherein A is selected from the group consisting of phenyl and substituted phenyl, wherein said substitution may be at any position and is selected from the group consisting of vinyl, --SO 3 .sup.⊖, --OH, --NO 2 , --NH 2 , and alkyl groups having from 1 to 10 carbon atoms; and wherein B is selected from the group consisting of methacrylate, hydroxyl, and vinylidene.
Claim 9
Dependent Claim
92 words
A homopolymer, comprising: the product of homopolymerization of an asymmetric polymer having the formula: A--PIB--B A--PIB--B wherein PIB is a polyisobutylene backbone, and A and B are different, wherein A is selected from the group consisting of phenyl and substituted phenyl, wherein said substitution may be at any position and is selected from the group consisting of vinyl, --SO 3 .sup.⊖, --OH, --NO 2 , --NH 2 , and alkyl groups having from 1 to 10 carbon atoms; and wherein B is selected from the group consisting of methacrylate, hydroxyl, and vinylidene.
Claim 10
Dependent Claim
21 words
A homopolymer according to claim 7, wherein said asymmetric polymer has a molecular weight of from about 1,000 to about 100,000.
Claim 11
Dependent Claim
20 words
A homopolymer according to claim 8, wherein the homopolymer has a molecular weight of from about 10,000 to about 1,000,000.
Claim 12
Dependent Claim
24 words
A homopolymer according to claim 9, wherein said asymmetric polymer is polyisobutenyl methacrylate having a molecular weight of from about 3,200 to about 5,200.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |