US5136014A
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US
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Hyperbranched polyesters
Assignee: CENTRAL MICHLAND UNIVERSITY RESEARCH Corp
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Filing: 1990-06-22
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Granted: 1992-08-04
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Expires: 2010-06-22
Abstract
Abstract This invention relates to hyperbranched, functional polyesters prepared by self-condensation of AB n -type monomers wherein n is at least 2 and wherein B moieties contain a terminal carboxylic acid group or derivative thereof, wherein A or B is carboxyl or hydroxyl-terminated moiety which is an aromatic or aliphatic amino. The polyesters have utility as rheology modifiers or drug delivery vehicles.
Inventors
- 👤 Garret D. Figuly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:40
CPC Classifications
C; C08; C08G; C08G83/00; C08G83/002; C08G83/005; A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2031; A61K9/204; C08G63/00; C08G63/02; C08G63/06; C08G63/68; C08G63/681; C08G63/685; C08G63/6852
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
209 words
A soluble hyperbranched polyester having at least 1 branch per 10 monomer units prepared by conventional polycondensation of one or more monomers of the formula: XR.sup.2 [(R.sup.1).sub.m Y].sub.n wherein: R 1 is a divalent C 1-12 hydrocarbyl radical which is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic; R 2 is a C 1-12 hydrocarbyl radical having a valence of (n+1), which radical is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic, or R 2 is R 3 N wherein R 3 is defined as for R 1 ; either of R 1 , R 2 or R 3 optionally also containing substituents that are unreactive under processing conditions; X and Y are terminal functions selected from --CO 2 R' and --OR" wherein R' is H or C 1-12 alkyl and R" is H or OC(O)R; m is 0 or 1; and n is an integer and is at least 2; with the provisos that: (i) both X and Y are not --CO 2 R' or --OR"; (ii) no X or Y function is adjacent to another X or Y function; (iii) when R 2 is an aliphatic hydrocarbyl radical, Y is --CO 2 R'; and (iv) when R 2 is R 3 N, m is 1.
Claim 2
Dependent Claim
209 words
A soluble hyperbranched polyester having at least 1 branch per 10 monomer units prepared by conventional polycondensation of one or more monomers of the formula: XR.sup.2 [(R.sup.1).sub.m Y].sub.n wherein: R 1 is a divalent C 1-12 hydrocarbyl radical which is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic; R 2 is a C 1-12 hydrocarbyl radical having a valence of (n+1), which radical is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic, or R 2 is R 3 N wherein R 3 is defined as for R 1 ; either of R 1 , R 2 or R 3 optionally also containing substituents that are unreactive under processing conditions; X and Y are terminal functions selected from --CO 2 R' and --OR" wherein R' is H or C 1-12 alkyl and R" is H or OC(O)R; m is 0 or 1; and n is an integer and is at least 2; with the provisos that: (i) both X and Y are not --CO 2 R' or --OR"; (ii) no X or Y function is adjacent to another X or Y function; (iii) when R 2 is an aliphatic hydrocarbyl radical, Y is --CO 2 R'; and (iv) when R 2 is R 3 N, m is 1.
Claim 3
Dependent Claim
13 words
The polyester of claim 1 wherein the molecular weight is at least 1500.
Claim 4
Dependent Claim
21 words
The polyester of claim 1 wherein R 2 is linear or branched aliphatic or mixed aliphatic-aromatic radical and m is 1.
Claim 5
Dependent Claim
12 words
The polyester of claim 1 wherein R 2 is R 3 N.
Claim 6
Dependent Claim
21 words
The polyester of claim 4 wherein R 3 is a linear or branched aliphatic radical containing 2 to 6 carbon atoms.
Claim 7
Dependent Claim
14 words
The polyester of claim 5 wherein R 1 is --CH 2 CH 2 --.
Claim 8
Dependent Claim
13 words
The polyester of claim 4 wherein R 3 is a mixed aliphatic-aromatic radical.
Claim 9
Dependent Claim
18 words
The polyester of claim 7 wherein R 3 is --C 6 H 4 CH 2 CH 2 --.
Claim 10
Dependent Claim
16 words
The polyester of claim 1 wherein R 2 is an aromatic radical and m is 0.
Claim 11
Dependent Claim
10 words
The polyester of claim 9 wherein R 2 is 1,3,5-benzenetriyl.
Claim 12
Dependent Claim
13 words
The polyester of claim 3 wherein R 2 is a mixed aliphatic-aromatic radical.
Claim 13
Dependent Claim
10 words
The polyester of claim 1 wherein R 2 is 3,3-(bis-4-phenylene)-1-butyl.
Claim 14
Dependent Claim
11 words
The polyester of claim 12 wherein X is CO 2 R'.
Claim 15
Dependent Claim
26 words
The polyester of claims, 8, 10 or 12 wherein the aromatic portion of R 2 contains at least one substituent that is inert under processing conditions.
Claim 16
Dependent Claim
31 words
A copolymer consisting essentially of repeat units of one or more of the polyesters of claim 1 and repeat units of a comonomer selected from a polymerizable diol or dicarboxylic acid.
Claim 17
Dependent Claim
23 words
The copolymer of claim 15 wherein Y in the one or more polyesters is --OR" and the comonomer is a polymerizable dicarboxylic acid.
Claim 18
Dependent Claim
24 words
The copolymer of claim 15 wherein Y in the one or more polyesters is --CO 2 R' and the comonomer is a polymerizable diol.
Claim 19
Dependent Claim
11 words
The copolymer of claim 16 wherein the comonomer is 1,1'-ferrocenedicarboxylic acid.
Claim 20
Dependent Claim
10 words
The copolymer of claim 16 wherein the comonomer is hemin.
Claim 21
Dependent Claim
164 words
A copolymer consisting essentially of repeat units of one or more soluble hyperbranched polyesters having at least 1 branch per 10 monomer units prepared by conventional polycondensation of one or more monomers of the formula XR.sup.2 [(R.sup.1).sub.m Y].sub.n wherein: R 1 is a divalent C 1-12 hydrocarbyl radical which is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic; R 2 is a C 1-12 hydrocarbyl radical having a valence of (n+1), which radical is linear or branched aliphatic; either of R 1 or R 2 optionally also containing substituents that are unreactive under processing conditions; X is CO 2 R', Y is OR", wherein R' is H or C 1-12 alkyl and R" is H or OC(O)R'; m is 0 or 1; and n is an integer and is at least 2; with the proviso that no X or Y function is adjacent to another X or Y function, and repeat units of a comonomer selected from a polymerizable diol or dicarboxylic acid.
Claim 22
Dependent Claim
164 words
A copolymer consisting essentially of repeat units of one or more soluble hyperbranched polyesters having at least 1 branch per 10 monomer units prepared by conventional polycondensation of one or more monomers of the formula XR.sup.2 [(R.sup.1).sub.m Y].sub.n wherein: R 1 is a divalent C 1-12 hydrocarbyl radical which is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic; R 2 is a C 1-12 hydrocarbyl radical having a valence of (n+1), which radical is linear or branched aliphatic; either of R 1 or R 2 optionally also containing substituents that are unreactive under processing conditions; X is CO 2 R', Y is OR", wherein R' is H or C 1-12 alkyl and R" is H or OC(O)R'; m is 0 or 1; and n is an integer and is at least 2; with the proviso that no X or Y function is adjacent to another X or Y function, and repeat units of a comonomer selected from a polymerizable diol or dicarboxylic acid.
Claim 23
Dependent Claim
13 words
The copolymer of claim 20 wherein the comonomer is a polymerizable dicarboxylic acid.
Claim 24
Dependent Claim
29 words
The copolymer of claim 21 wherein in the one or more hyperbranched polyesters m is 1, n is 2, R 1 is --CH 2 --and R 2 is 1,1,1-ethanetriyl.
Claim 25
Dependent Claim
11 words
The copolymer of claim 22 wherein the comonomer is 1,1'-ferrocenedicarboxylic acid.
Claim 26
Dependent Claim
10 words
The copolymer of claim 22 wherein the comonomer is hemin.
Claim 27
Dependent Claim
21 words
The polyester of claim 24 wherein the X and Y functions have been capped with an aliphatic anhydride or acyl chloride.
Claim 28
Dependent Claim
31 words
A copolymer consisting essentially of repeat units of one or more of the polyesters of claim 24 and repeat units of a comonomer selected from a polymerizable diol or dicarboxylic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |