US4661582A
Expired / Lapsed
US
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Novel high molecular weight diimide diacids and modified thermoplastic copolyether ester elastomers prepared therefrom
Assignee: General Electric Co
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Filing: 1986-05-05
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Granted: 1987-04-28
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Expires: 2006-05-05
Abstract
Abstract Novel diimide diacids and modified polyetherimide esters are prepared therefrom by reacting diols, dicarboxylic acids and a combination of the novel diimide diacid and dimer acid. These compositions have many excellent properties which make them particularly useful for extrusion and molding applications.
Inventors
- 👤 Russell J. McCready
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:38
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
75 words
The imidization reaction product of (a) a tricarboxylic acid anhydride or the corresponding acid thereof containing two vicinal carboxyl groups and (b) a polyoxyalkylene diamine of the formula H.sub.2 N--G--NH.sub.2 wherein G is the divalent radical remaining after the removal of the amino groups of a long chain poly(alkylene ether) diamine having a molecular weight of from about 600 to about 12000 and a carbon to oxygen, ratio of from about 1.8:1 to about 4.3:1.
Claim 2
Dependent Claim
75 words
The imidization reaction product of (a) a tricarboxylic acid anhydride or the corresponding acid thereof containing two vicinal carboxyl groups and (b) a polyoxyalkylene diamine of the formula H.sub.2 N--G--NH.sub.2 wherein G is the divalent radical remaining after the removal of the amino groups of a long chain poly(alkylene ether) diamine having a molecular weight of from about 600 to about 12000 and a carbon to oxygen, ratio of from about 1.8:1 to about 4.3:1.
Claim 3
Dependent Claim
78 words
The reaction product of claim 1 wherein the tricarboxylic acid anhydride is represented by the formula: ##STR3## wherein R a C 2 to C 20 organic aliphatic, cycloaliphatic or aromatic trivalent radical having two vicinal reactive sites and R' is selected from the group consisting of hydrogen, or a monovalent organic radical selected from the group consisting of a C 1 to C 6 aliphatic or cycloaliphatic hydrocarbon radical or a C 6 to C 12 aromatic radical.
Claim 4
Dependent Claim
14 words
The reaction product of claim 1 wherein the tricarboxylic acid anhydride is trimellitic anhydride.
Claim 5
Dependent Claim
28 words
The reaction product of claim 1 wherein the polyoxyalkylene diamine is selected from the group consisting of poly(propylene ether) diamine, poly(tetramethylene ether) diamine and co-poly(ethylene ether-propylene ether) diamine.
Claim 6
Dependent Claim
14 words
The reaction product of claim 1 wherein the polyoxyalkylene diamine is poly(propylene ether) diamine.
Claim 7
Dependent Claim
21 words
The reaction product of claim 1 wherein the polyoxyalkylene diamine is co-poly-(ethylene ether-propylene ether) diamine have a predominately polyethylene ether backbone.
Claim 8
Dependent Claim
109 words
High molecular weight poly ether diamide diacids of the formula: ##STR4## wherein each R is independently selected from the group consisting of C 2 to C 20 aliphatic and cycloaliphatic trivalent organic radicals and C 6 to C 20 aromatic trivalent organic radicals having two vicinal reactive sites; each R' is independently selected from the group consisting of hydrogen, C 1 to C 6 aliphatic and cycloaliphatic monovalent organic radicals and C 6 to C 12 aromatic monovalent organic radicals, and G is the radical remaining after removal of the amino groups of a long chain ether diamine having an average molecular weight of from about 600 to 12,000.
Claim 9
Dependent Claim
109 words
High molecular weight poly ether diamide diacids of the formula: ##STR4## wherein each R is independently selected from the group consisting of C 2 to C 20 aliphatic and cycloaliphatic trivalent organic radicals and C 6 to C 20 aromatic trivalent organic radicals having two vicinal reactive sites; each R' is independently selected from the group consisting of hydrogen, C 1 to C 6 aliphatic and cycloaliphatic monovalent organic radicals and C 6 to C 12 aromatic monovalent organic radicals, and G is the radical remaining after removal of the amino groups of a long chain ether diamine having an average molecular weight of from about 600 to 12,000.
Claim 10
Dependent Claim
19 words
The diimide diacid of claim 7 wherein R is a trivalent 6 membered aromatic hydrocarbon and R' is hydrogen.
Claim 11
Dependent Claim
37 words
The diimide diacid of claim 7 wherein G is the divalent radical remaining after removal of the terminal amino groups of a long chain ether diamine having a molecular weight of from about 900 to about 4000.
Claim 12
Dependent Claim
48 words
The diimide diacid of claim 7 wherein G is the divalent radical remaining after removal of the terminal amino groups of a long chain poly(alkylene ether) diamine selected from the group consisting of poly(ethylene ether) diamine, poly(tetramethylene ether) diamine, and a random or block copoly(ethylene ether-propylene ether) diamine.
Claim 13
Dependent Claim
24 words
The diimide diacid of claim 7 wherein G is the divalent radical remaining after removal of the terminal amino groups of poly(propylene ether) diamine.
Claim 14
Dependent Claim
26 words
The diimide diacid of claim 7 wherein G is the divalent radical remaining after removal of the terminal amino groups of a co-poly(propylene ether-ethylene ether) diamine.
Claim 15
Dependent Claim
18 words
The diimide diacid of claim 12 wherein the co-poly(propylene ether-ethylene ether) diamine has a predominately poly(ethylene ether) backbone.
Claim 16
Dependent Claim
25 words
The diimide diacid of claim 8 wherein R is the radical remaining after removal of the carboxylic group of trimellitic acid or trimellitic anhydride, respectively.
Claim 17
Dependent Claim
13 words
The diimide diacid of claim 14, wherein R is derived from trimellitic anhydride.
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) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |