Patent US4837293A successfully refreshed from Google Patents.
US4837293A
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Linear bisphenol epoxy polymers containing cyano groups
Assignee: Dow Chemical Co
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Filing: 1987-08-28
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Granted: 1989-06-06
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Expires: 2007-08-28
Abstract
Abstract Cyanobisphenols of the formula: ##STR1## and their diglycidyl ethers may form linear thermoplastic polymers with low oxygen permeability and which contain cyano moieties that may subsequently be reacted to form useful active sites on the polymer.
Inventors
- 👤 H. Craig Silvis
- 👤 Steven P. Crain
- 👤 Bassam S. Nader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:43
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C07; C07C; C07C255/00; C07C255/01; C07C255/32; C07C255/36; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08G59/18; C08G59/20; C08G59/22; C08G59/28; C08G59/40; C08G59/62; C08G59/621
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
44 words
A thermoplastic polymer comprising a plurality of cyanobisphenoxy units which conform to the formula: ##STR22## wherein R 1 is either hydrogen or alkyl, each R 2 is independently hydrogen, alkyl, alkoxy or halogen, and R is an alkyl group of at least 3 carbons.
Claim 2
Dependent Claim
44 words
A thermoplastic polymer comprising a plurality of cyanobisphenoxy units which conform to the formula: ##STR22## wherein R 1 is either hydrogen or alkyl, each R 2 is independently hydrogen, alkyl, alkoxy or halogen, and R is an alkyl group of at least 3 carbons.
Claim 3
Dependent Claim
47 words
The polymer of claim 1 wherein R is no more than about 5 carbons, R 1 is hydrogen or alkyl of no more than about 4 carbons and each R 2 is independently hydrogen, chlorine, bromine, methoxy, ethoxy or alkyl of no more than about 3 carbons.
Claim 4
Dependent Claim
26 words
The polymer of claim 2 wherein R is a propyl group, R 1 is hydrogen or methyl and each R 2 is independently hydrogen or methyl.
Claim 5
Dependent Claim
48 words
The polymer of claim 3 wherein the moiety shown results either from the reaction of an epoxy moiety with a bisphenol which complies with the formula: ##STR23## or from the reaction of a glycidyl ether of such a compound with a diol which contains two phenolic hydroxide moieties.
Claim 6
Dependent Claim
36 words
The polymer of claim 1 which complies with the formula: ##STR24## wherein n is a number of recurring units greater than one, and G is hydrogen, an oxirane group or the remnant of an oxirane group.
Claim 7
Dependent Claim
47 words
The polymer of claim 5 wherein R is no more than about 5 carbons, R 1 is hydrogen or alkyl of no more than about 4 carbons and each R 2 is independently hydrogen, chlorine, bromine, methoxy, ethoxy or alkyl of no more than about 3 carbons.
Claim 8
Dependent Claim
11 words
The polymer of claim 6 wherein n is 30 or more.
Claim 9
Dependent Claim
26 words
The polymer of claim 7 wherein R is a propyl group, R 1 is hydrogen or methyl and each R 2 is independently hydrogen or methyl.
Claim 10
Dependent Claim
22 words
The polymer of claim 8 which has been formed by a reaction of two monomers which comply with the following formulae: ##STR25##
Claim 11
Dependent Claim
43 words
The polymer of claim 1 which complies with the formula: ##STR26## wherein A is a divalent organic moiety and n is a number of recurring units greater than one, and G is hydrogen, an oxirane group or the remnant of an oxirane group.
Claim 12
Dependent Claim
46 words
The polymer of claim 10 wherein R is no more than about 5 carbons, R 1 hydrogen or alkyl of no more than about 4 carbons and each R 2 is independently hydrogen, chlorine, bromine, methoxy, ethoxy or alkyl of no more than about 3 carbons.
Claim 13
Dependent Claim
38 words
The polymer of claim 11 wherein A complies with the formula: ##STR27## wherein Y is either lower alkyl, carbonyl, sulfonyl, oxygen or a bond; and each X and Z is independently hydrogen, a halogen or an alkyl moiety.
Claim 14
Dependent Claim
28 words
The polymer of claim 12 wherein each X is hydrogen, each Z is independently hydrogen, methyl, ethyl, chlorine or bromine, and Y is either alkyl or a bond.
Claim 15
Dependent Claim
43 words
The polymer of claim 13 wherein each Z is independently hydrogen or methyl, Y is an alkyl moiety of one to 3 carbons, R is a propyl group, R 1 is hydrogen or methyl and each R 2 is independently hydrogen or methyl.
Claim 16
Dependent Claim
21 words
The polymer of claim 14 which has been formed by a reaction of two monomers which comply with the formulae: ##STR28##
Claim 17
Dependent Claim
22 words
The polymer of claim 14 which has been formed by a reaction of two monomers which comply with the formulae: ##STR29## ##STR30##
Claim 18
Dependent Claim
97 words
A process for forming a thermoplastic cyanobisphenoxy polymer comprising and wherein contacting a diol having two phenolic hydroxide moieties with a diglycidyl ether, at least one of which is a cyanobisphenol or its diglycidyl ether derivative which complies with the formula: ##STR31## wherein E is either hydrogen or a moiety of the formula: ##STR32## wherein R 1 is hydrogen or alkyl, R 2 is either hydrogen, alkyl, alkoxy or halogen; and R 3 is hydrogen or an alkyl moiety, under conditions such that the epoxy moieties react with the hydroxide moieties to form links between the monomers.
Claim 19
Dependent Claim
97 words
A process for forming a thermoplastic cyanobisphenoxy polymer comprising and wherein contacting a diol having two phenolic hydroxide moieties with a diglycidyl ether, at least one of which is a cyanobisphenol or its diglycidyl ether derivative which complies with the formula: ##STR31## wherein E is either hydrogen or a moiety of the formula: ##STR32## wherein R 1 is hydrogen or alkyl, R 2 is either hydrogen, alkyl, alkoxy or halogen; and R 3 is hydrogen or an alkyl moiety, under conditions such that the epoxy moieties react with the hydroxide moieties to form links between the monomers.
Claim 20
Dependent Claim
38 words
The process of claim 17 wherein R 1 is hydrogen or alkyl containing one to 4 carbons; each R 2 is independently hydrogen, methyl, ethyl, methoxy, ethoxy, chlorine or bromine; and R 3 is hydrogen, ethyl or methyl.
Claim 21
Dependent Claim
35 words
The process of claim 18 wherein a diol which complies with the given formula when E is H is reacted with a diglycidyl ether which complies with the given formula when E is an epoxide.
Claim 22
Dependent Claim
41 words
The process of claim 19 wherein a polymer is formed which complies with the formula: ##STR33## wherein n is a number of recurring units greater than one, and G is hydrogen, an oxirane group or the remnant of an oxirane group.
Claim 23
Dependent Claim
96 words
The process of claim 18 wherein the cyanobisphenol or its diglycidyl ether derivative reacts with a comonomer of the formula: ##STR34## wherein when E is hydrogen, D is an epoxide, and A is a divalent organic moiety which is inert with respect to alcohols, phenolics and epoxides up to temperatures of 200° C.; and when E is an epoxide, D is hydrogen and A is a divalent organic moiety which is inert with respect to alcohols, phenolics and epoxides up to temperatures of 200° C. having an aromatic moiety or moieties bonded to the two oxygens.
Claim 24
Dependent Claim
38 words
The process of claim 21 wherein A complies with the formula: ##STR35## wherein Y is either lower alkyl, carbonyl, sulfonyl, oxygen or a bond; and each X and Z is independently hydrogen, a halogen or an alkyl moiety.
Claim 25
Dependent Claim
28 words
The process of claim 22 wherein each X is hydrogen, each Z is independently hydrogen, methyl, ethyl, chlorine or bromine, and Y is either alkyl or a bond.
Claim 26
Dependent Claim
16 words
The process of claim 23 wherein a polymer is formed which complies with the formula: ##STR36##
Claim 27
Dependent Claim
43 words
The process of claim 24 wherein each Z is independently hydrogen or methyl, Y is an alkyl moiety of one to 3 carbons, R is a propyl group, R 1 is hydrogen or methyl and each R 2 is independently hydrogen or methyl.
Claim 28
Dependent Claim
18 words
The process of claim 25 wherein bis-(4-hydroxyphenyl)acetonitrile or bis-(4-hydroxy-3,5-dimethylphenyl)acetonitrile is reacted with a diglycidyl ether of bisphenol A.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
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