Patent EP0269825A2 successfully refreshed from Google Patents.
EP0269825A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Thermoplastic polyetherimide ester elastomers exhibiting improved hydrolytic stability
Assignee: General Electric Co
•
Filing: 1987-10-21
•
Granted: —
•
Expires: 2007-10-21
Abstract
Abstract Polyetherimide ester compositions exhibiting improved hydrolytic stability are provided. These polymers are comprised of the reaction products of: (i) at least one diol; (ii) at least one dicarboxylic acid or an ester forming reactive derivative thereof; and (iii) a set of reactants selected from either (a) (i) an amount at least effective to improve the hydrolytic stability of said composition of at least one high molecular weight bisaminoalkyl polytetrahydrofuran, and (ii) at least one tricarboxylic acid or derivative thereof, or (b) an amount at least effective to improve the hydrolytic stability of said composition of at least one polyoxytetramethylene dialkylenediimide diacid, said polyoxytetramethylene dialkylenediimide diacid being the reaction product of (iii) (a) (i) and (iii) (a) (ii). The polymers of the instant invention are useful for production of extruded and molded parts requiring improved hydrolytic stability.
Inventors
- 👤 Russell James Mccready
- 👤 John Alfred Tyrell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 13:53
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
95 words
A polyetherimide ester composition exhibiting improved hydrolytic stability comprising the reaction products of: (i) at least one diol; (ii) at least one dicarboxylic acid or an ester forming reactive derivative thereof; and (iii) a set of reactants selected from (a) (i) an amount at least effective to improve the hydrolytic stability of said composition of at least one high molecular weight bisaminoalkyl polytetrahydrofuran, and (ii) at least one tricarboxylic acid or derivative thereof, or (b) an amount at least effective to improve the hydrolytic stability of said composition of at least one polyoxytetramethylene dialkylenediimide diacid.
Claim 2
Dependent Claim
95 words
A polyetherimide ester composition exhibiting improved hydrolytic stability comprising the reaction products of: (i) at least one diol; (ii) at least one dicarboxylic acid or an ester forming reactive derivative thereof; and (iii) a set of reactants selected from (a) (i) an amount at least effective to improve the hydrolytic stability of said composition of at least one high molecular weight bisaminoalkyl polytetrahydrofuran, and (ii) at least one tricarboxylic acid or derivative thereof, or (b) an amount at least effective to improve the hydrolytic stability of said composition of at least one polyoxytetramethylene dialkylenediimide diacid.
Claim 3
Dependent Claim
9 words
The composition of claim 1 wherein (iii) is (a).
Claim 4
Dependent Claim
29 words
The composition of claim 2 wherein (iii) (a) (i) contains a mixture of bisaminoalkyl polytetrahydrofuran and another high molecular weight poly(oxy alkylene) diamine which is different from said bisaminoalkyl.
Claim 5
Dependent Claim
18 words
The composition of claim 3 wherein said mixture contains at least about 30 mole percent of bisaminoalkyl polytetrahydrofuran.
Claim 6
Dependent Claim
18 words
The composition of claim 4 wherein said mixture contains at least about 40 mole percent of bisaminoalkyl polytetrahydrofuran.
Claim 7
Dependent Claim
19 words
The composition of claim 5 wherein said mixture contains at least about 50 mole percent of said bisaminoalkyl polytetrahydrofuran.
Claim 8
Dependent Claim
63 words
The composition of claim 3 wherein said bisaminoalkyl polytetrahydrofuran is represented by the formula H₂N-R¹-G-R¹-NH₂ wherein: R¹ is independently selected from alkylene radicals containing from 2 to about 6 carbon atoms; and G is the radical remaining after removal of the amino groups of a long chain tetramethylene ether diamine and has an average molecular weight of from about 600 to about 12,000.
Claim 9
Dependent Claim
52 words
The composition of claim 7 wherein said other poly(oxy alkylene)diamine is represented by the formula H₂N-Gʹ-NH₂ wherein Gʹ is the radical remaining after the removal of the amino groups of a long chain alkylene ether diamine and the poly(oxy alkylene)diamine has an average molecular weight of from about 600 to about 12,000.
Claim 10
Dependent Claim
21 words
The composition of claim 8 wherein said other poly(oxy alkylene)diamine is selected from poly(ethylene ether)diamine, poly(propylene ether) diamine, or mixtures thereof.
Claim 11
Dependent Claim
19 words
The composition of claim 2 wherein (iii) (a) (i) contains 100 mole percent of at least one bisaminoalkyl polytetrahydrofuran.
Claim 12
Dependent Claim
64 words
The composition of claim 10 wherein said bisaminoalkyl polytetrahydrofuran is represented by the general formula H₂N-R¹-G-R¹-NH₂ wherein: R¹ is independently selected from alkylene radicals containing from 2 to about 6 carbon atoms; and G is the radical remaining after the removal of the amino groups from a long chain tetramethylene ether diamine having an average molecular weight of from about 600 to about 12,000.
Claim 13
Dependent Claim
11 words
The composition of claim 11 wherein R¹ is the propylene radical.
Claim 14
Dependent Claim
9 words
The composition of claim 1 wherein (iii) is (b).
Claim 15
Dependent Claim
26 words
The composition of claim 13 wherein (iii) (b) contains a mixture of at least one polyoxytetramethylene dialkylenediimide diacid and at least one other polyoxyalkylene diimide diacid.
Claim 16
Dependent Claim
20 words
The composition of claim 14 wherein said mixture contains at least about 30 mole percent of said polyoxytetramethylene dialkylenediimide diacid.
Claim 17
Dependent Claim
20 words
The composition of claim 15 wherein said mixture contains at least about 40 mole percent of said polyoxytetramethylene dialkylenediimide diacid.
Claim 18
Dependent Claim
20 words
The composition of claim 16 wherein said mixture contains at least about 50 mole percent of said polyoxytetramethylene dialkylenediimide diacid.
Claim 19
Dependent Claim
97 words
The composition of claim 13 wherein said polyoxytetramethylene dialkylenediimide diacid is represented by the general formula wherein: R¹ is independently selected from alkylene radicals containing from 2 to about 6 carbon atoms; Rʹ is independently selected from hydrogen or monovalent C₁-C₆ aliphatic or cycloaliphatic radicals or monovalent C₆-C₁₂ aromatic radicals; R is a trivalent C₂-C₂₀ aliphatic or cycloaliphatic radical or a trivalent C₆-C₂₀ aromatic radical; and G is the radical remaining after the removal of the amino groups from a long chain tetramethylene ether diamine having an average molecular weight of from about 600 to about 12,000.
Claim 20
Dependent Claim
84 words
The composition of claim 14 wherein said other polyoxyalkylene diimide diacid is represented by the general formula wherein: Rʹ is independently selected from hydrogen or monovalent C₁-C₆ aliphatic or cycloaliphatic radicals or monovalent C₆-C₁₂ aromatic radicals; R is independently selected from trivalent C₂-C₂₀ aliphatic or cycloaliphatic radicals or trivalent C₆-C₂₀ aromatic radicals; and G is the radical remaining after the removal of the amino groups from a long chain alkylene ether diamine having an average molecular weight of from about 600 to about 12,000.
Claim 21
Dependent Claim
22 words
The composition of claim 19 wherein said polyoxyalkylene diimide diacid is selected from polyoxyethylene diimide diacid, polyoxypropylene diimide diacid, or mixtures thereof.
Claim 22
Dependent Claim
19 words
the composition of claim 13 wherein (iii) (b) contains 100 mole percent of at least one polyoxytetramethylene dialkylenediimide diacid.
Claim 23
Dependent Claim
14 words
The composition of claim 21 wherein said polyoxytetramethylene dialkylenediimide diacid is polyoxytetramethylene dipropylenediimide diacid.
Claim 24
Dependent Claim
23 words
The composition of claim 1 wherein the diol component (i) is selected from C₂ to C₉ aliphatic or cycloaliphatic diols, or mixtures thereof.
Claim 25
Dependent Claim
11 words
The composition of claim 23 wherein said diol component contains 1,4-butanediol.
Claim 26
Dependent Claim
19 words
The composition of claim 23 wherein said diol component contains a mixture of 1,4-butanediol and butanediol or cyclohexane dimethanol.
Claim 27
Dependent Claim
28 words
The composition of claim 1 wherein said said dicarboxylic acid component (ii) is selected from C₂ to C₁₉ aliphatic or cycloaliphatic dicarboxylic acids or C₆-C₁₆ aromatic dicarboxylic acids.
Claim 28
Dependent Claim
19 words
The composition of claim 26 wherein at least about 60 mole percent of the dicarboxylic acids are the same.
Claim 29
Dependent Claim
19 words
The composition of claim 27 wherein at least about 80 mole percent of the dicarboxylic acids are the same.
Claim 30
Dependent Claim
15 words
The composition of claim 26 wherein said dicarboxylic acid is selected from dicarboxylic aromatic acids.
Claim 31
Dependent Claim
13 words
The composition of claim 29 wherein said aromatic dicarboxylic acid is dimethyl terephthalate.
Claim 32
Dependent Claim
52 words
The composition of claim 1 wherein said tricarboxylic acid (iii) (a) (ii) is represented by the formula wherein: R is a trivalent C₂ to C₂₀ aliphatic or cycloaliphatic radical or a C₆-C₂₀ trivalent aromatic radical; and Rʹ is hydrogen or a monovalent C₁-C₆ aliphatic or cycloaliphatic radical or monovalent C₆-C₁₂ aromatic radical.
Claim 33
Dependent Claim
12 words
The composition of claim 31 wherein said tricarboxylic acid is trimellitic anhydride.
Claim 34
Dependent Claim
37 words
The composition of claim 1 wherein the weight ratio of the reaction product of (iii) (a) (i) and (iii) (a) (ii) or of (iii) (b) to the dicarboxylic acid (ii) is from about 0.25 to about 2.0.
Claim 35
Dependent Claim
16 words
The composition of claim 33 wherein said weight ratio is from about 0.4 to about 1.4
Claim 36
Dependent Claim
10 words
The composition of claim 1 which further contains a stabilizer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.