Patent US4438647A successfully refreshed from Google Patents.
US4725652A
Expired / Lapsed
US
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Latent catalysts for epoxy reactions
Assignee: Dow Chemical Co
•
Filing: 1987-03-04
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Granted: 1988-02-16
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Expires: 2007-03-04
Abstract
Abstract Latent catalysts for epoxy reactions are prepared by reacting a tetrasubstituted onium compound such as tetrabutylphosphonium acetate.acetic acid complex or an amine compound with an acid having a weak-nucleophilic anion such as fluoboric acid. These catalysts provide stable latent catalysts for epoxy resins for advancement or curing reactions.
Inventors
- 👤 James L. Bertram
- 👤 Louis L. Walker
- 👤 Van I. W. Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:50
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/02; C08G59/44; C08G59/444; C08G59/50; C08G59/68; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515
Claims Analysis
Total Claims: 98
Claim 1
Independent Claim
268 words
A composition which when stored at a temperature of 52° C. for a period of nine weeks exhibits an inrease in viscosity measured in centipoise of less than about 22 percent as compared to the viscosity of the composition prior to storing and wherein the viscosity measurements are taken at room temperature and which composition comprises (A) a material that has an average of more than one vicinal epoxy group per molecule and (B) a catalytic quantity of a catalyst which results from contacting (1) (a) an onium compound represented by the following formula I ##STR4## wherein each R, R 1 , R 2 and R 3 is independently an aliphatic hydrocarbyl group having from 1 to about 20 carbon atoms or an aliphatic group having from 1 to about 20 carbon atoms which group also contains one or more oxygen, sulfur, halogen or nitrogen atoms, z has a value of zero or 1 depending on the valence of Z; Z is phosphorus, nitrogen or arsenic and each x is the anion portion of an acid of an element selected from carbon or a halogen and m has a value equal to the valence of the anion X or (b) an aliphatic or aromatic tertiary amine with (2) an acid having a weak ncleophilic anion selected from the group consisting of fluoboric acid, fluoarsenic acid, fluoantimonic acid, fluophosphoric acid, chloro-boric acid, chloroarsenic acid, chloroantimonic acid, chlorophosphoric acid, perchloric acid, chloric acid, bromic acid, iodic acid and combinations thereof in an amount which provides from about 0.9 to about 1.5 moles of component (B-2) per mole of component (B-1).
Claim 2
Dependent Claim
268 words
A composition which when stored at a temperature of 52° C. for a period of nine weeks exhibits an inrease in viscosity measured in centipoise of less than about 22 percent as compared to the viscosity of the composition prior to storing and wherein the viscosity measurements are taken at room temperature and which composition comprises (A) a material that has an average of more than one vicinal epoxy group per molecule and (B) a catalytic quantity of a catalyst which results from contacting (1) (a) an onium compound represented by the following formula I ##STR4## wherein each R, R 1 , R 2 and R 3 is independently an aliphatic hydrocarbyl group having from 1 to about 20 carbon atoms or an aliphatic group having from 1 to about 20 carbon atoms which group also contains one or more oxygen, sulfur, halogen or nitrogen atoms, z has a value of zero or 1 depending on the valence of Z; Z is phosphorus, nitrogen or arsenic and each x is the anion portion of an acid of an element selected from carbon or a halogen and m has a value equal to the valence of the anion X or (b) an aliphatic or aromatic tertiary amine with (2) an acid having a weak ncleophilic anion selected from the group consisting of fluoboric acid, fluoarsenic acid, fluoantimonic acid, fluophosphoric acid, chloro-boric acid, chloroarsenic acid, chloroantimonic acid, chlorophosphoric acid, perchloric acid, chloric acid, bromic acid, iodic acid and combinations thereof in an amount which provides from about 0.9 to about 1.5 moles of component (B-2) per mole of component (B-1).
Claim 3
Dependent Claim
35 words
A composition of claim 1 wherein each R, R 1 , R 2 and R 3 is independently a hydrocarbyl group having from 1 to about 9 carbon atoms and Z is phosphorus or nitrogen.
Claim 4
Dependent Claim
43 words
A composition of claim 2 wherein component (B-1-a) is a phosphonium compound, component (B-2) is fluoboric acid and components (B-1) and (B-2) are employed in quantities which provide from about 1 to about 1.4 moles of fluoboric acid per mole of component (B-1).
Claim 5
Dependent Claim
22 words
A composition of claim 3 wherein component (B-1) is tetrabutylphosphonium acetateacetic acid complex, triethyl amine, 2-methylimidazole, N-methylmorpholine, N,N,N',N'-tetramethylethylenediamine or a combination thereof.
Claim 6
Dependent Claim
166 words
A composition which when stored at a temperature of 52° C. for a period of nine weeks exhibits an increase in viscosity measured in centipoise of less than about 22 percent as compared to the viscosity of the compoisition prior to storing and wherein the viscosity measurements are taken at room temperature and which composition comprises (A) a material that has an average of more than one vicinal epoxy group per molecule and (B) a catalytic quantity of a catalyst represented by the following formula I ##STR5## wherein each R, R 1 , R 2 and R 3 is independently an aliphatic hydrocarbyl group having from 1 to about 20 carbon atoms or an aliphatic group having from 1 to about 20 carbon atoms which group also contains one or more oxygen, sulfur, halogen or nitrogen atoms; z has a value of zero or 1 depending on the valence of Z; Z is phosphorus or nitrogen; X is fluoborate and m has a value of 1.
Claim 7
Dependent Claim
166 words
A composition which when stored at a temperature of 52° C. for a period of nine weeks exhibits an increase in viscosity measured in centipoise of less than about 22 percent as compared to the viscosity of the compoisition prior to storing and wherein the viscosity measurements are taken at room temperature and which composition comprises (A) a material that has an average of more than one vicinal epoxy group per molecule and (B) a catalytic quantity of a catalyst represented by the following formula I ##STR5## wherein each R, R 1 , R 2 and R 3 is independently an aliphatic hydrocarbyl group having from 1 to about 20 carbon atoms or an aliphatic group having from 1 to about 20 carbon atoms which group also contains one or more oxygen, sulfur, halogen or nitrogen atoms; z has a value of zero or 1 depending on the valence of Z; Z is phosphorus or nitrogen; X is fluoborate and m has a value of 1.
Claim 8
Dependent Claim
35 words
A composition of claim 5 wherein each R, R 1 , R 2 and R 3 is independently a hydrocarbyl group having from 1 to about 9 carbon atoms and Z is phosphorus or nitrogen.
Claim 9
Dependent Claim
9 words
A composition of claim 6 wherein Z is phosphorus.
Claim 10
Dependent Claim
28 words
A composition of claim 7 wherein R, R 1 , R 2 , R 3 and Z are such that the onium portion of the catalyst is tetrabutylphosphonium.
Claim 11
Dependent Claim
24 words
A composition of claim 1 wherein component (A) is a polyglycidyl ether of a material containing more than one aromatic hydroxyl group per molecule.
Claim 12
Dependent Claim
15 words
A composition of claim 9 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 13
Dependent Claim
15 words
A composition of claim 10 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 14
Dependent Claim
24 words
A composition of claim 2 wherein component (A) is a polyglycidyl ether of a material containing more than one aromatic hydroxyl group per molecule.
Claim 15
Dependent Claim
15 words
A composition of claim 12 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 16
Dependent Claim
15 words
A composition of claim 13 wherein component (A) is a diglycidyl ether of bisphenol A.
Claim 17
Dependent Claim
23 words
A composition of claim 3 wherein component (A) is a polyglycidyl ether of material containing more than one aromatic hydroxyl group per molecule.
Claim 18
Dependent Claim
15 words
A composition of claim 15 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 19
Dependent Claim
15 words
A composition of claim 16 wherein component (A) is a diglycidyl ether of bisphenol A.
Claim 20
Dependent Claim
23 words
A composition of claim 4 wherein component (A) is a polyglycidyl ether of material containing more than one aromatic hydroxyl group per molecule.
Claim 21
Dependent Claim
15 words
A composition of claim 18 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 22
Dependent Claim
15 words
A composition of claim 19 wherein component (A) is a diglycidyl ether of bisphenol A.
Claim 23
Dependent Claim
23 words
A composition of claim 5 wherein component (A) is a polyglycidyl ether of material containing more than one aromatic hydroxyl group per molecule.
Claim 24
Dependent Claim
15 words
A composition of claim 21 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 25
Dependent Claim
15 words
A composition of claim 22 wherein component (A) is a diglycidyl ether of bisphenol A.
Claim 26
Dependent Claim
23 words
A composition of claim 6 wherein component (A) is a polyglycidyl ether of material containing more than one aromatic hydroxyl group per molecule.
Claim 27
Dependent Claim
15 words
A composition of claim 24 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 28
Dependent Claim
15 words
A composition of claim 25 wherein component (A) is a diglycidyl ether of bisphenol A.
Claim 29
Dependent Claim
23 words
A composition of claim 7 wherein component (A) is a polyglycidyl ether of material containing more than one aromatic hydroxyl group per molecule.
Claim 30
Dependent Claim
15 words
A composition of claim 27 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 31
Dependent Claim
15 words
A composition of claim 28 wherein component (A) is a diglycidyl ether of bisphenol A.
Claim 32
Dependent Claim
23 words
A composition of claim 8 wherein component (A) is a polyglycidyl ether of material containing more than one aromatic hydroxyl group per molecule.
Claim 33
Dependent Claim
15 words
A composition of claim 30 wherein component (A) is a diglycidyl ether of a bisphenol.
Claim 34
Dependent Claim
15 words
A composition of claim 31 wherein component (A) is a diglycidyl ether of bisphenol A.
Claim 35
Dependent Claim
23 words
A composition of claim 1 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 36
Dependent Claim
30 words
A composition of claim 33 wherein component (C) is bipehnol, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde resin or a combination thereof.
Claim 37
Dependent Claim
23 words
A composition of claim 2 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 38
Dependent Claim
31 words
A composition of claim 35 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabomobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 39
Dependent Claim
23 words
A composition of claim 3 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 40
Dependent Claim
31 words
A composition of claim 37 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 41
Dependent Claim
23 words
A composition of claim 4 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 42
Dependent Claim
29 words
A combination of claim 39 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 43
Dependent Claim
23 words
A composition of claim 5 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 44
Dependent Claim
31 words
A composition of claim 41 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 45
Dependent Claim
23 words
A composition of claim 6 which additionally contains (C) a materil having an average of more than one phenolic hydroxyl group per molecule.
Claim 46
Dependent Claim
31 words
A composition of claim 43 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 47
Dependent Claim
23 words
A composition of claim 7 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 48
Dependent Claim
31 words
A composition of claim 45 wherein component (C) is biphenol, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, etramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 49
Dependent Claim
23 words
A composition of claim 8 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 50
Dependent Claim
31 words
A composition of claim 47 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 51
Dependent Claim
23 words
A composition of claim 9 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 52
Dependent Claim
31 words
A composition of claim 49 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 53
Dependent Claim
23 words
A composition of claim 10 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 54
Dependent Claim
31 words
A composition of claim 51 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 55
Dependent Claim
23 words
A composition of claim 11 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 56
Dependent Claim
31 words
A composition of claim 53 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethybiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 57
Dependent Claim
23 words
A composition of claim 12 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 58
Dependent Claim
31 words
A composition of claim 55 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetremethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 59
Dependent Claim
23 words
A composition of claim 13 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 60
Dependent Claim
31 words
A composition of claim 57 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 61
Dependent Claim
23 words
A composition of claim 14 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 62
Dependent Claim
31 words
A composition of claim 59 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 63
Dependent Claim
23 words
A composition of claim 15 which additionally contains (C) a materila having an average of more than one phenolic hydroxyl group per molecule.
Claim 64
Dependent Claim
31 words
A composition of claim 61 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 65
Dependent Claim
23 words
A composition of claim 16 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 66
Dependent Claim
31 words
A composition of claim 63 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 67
Dependent Claim
23 words
A composition of claim 17 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 68
Dependent Claim
31 words
A composition of claim 65 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrbromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 69
Dependent Claim
23 words
A composition of claim 18 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 70
Dependent Claim
31 words
A composition of claim 67 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde movolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 71
Dependent Claim
23 words
A composition of claim 19 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 72
Dependent Claim
30 words
A composition of claim 69 wherein component (C) is biphenyl, bisphenol A, bisphenolK, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 73
Dependent Claim
23 words
A composition of claim 20 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 74
Dependent Claim
31 words
A composition of claim 71 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 75
Dependent Claim
23 words
A composition of claim 21 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 76
Dependent Claim
31 words
A composition of claim 73 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 77
Dependent Claim
23 words
A composition of claim 22 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 78
Dependent Claim
31 words
A composition of claim 75 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 79
Dependent Claim
23 words
A composition of claim 23 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 80
Dependent Claim
31 words
A composition of claim 77 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrbromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 81
Dependent Claim
23 words
A composition of claim 24 which additionally contains (C) a material having an average of omre than one phenolic hydroxyl group per molecule.
Claim 82
Dependent Claim
31 words
A composition of claim 79 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramehtyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 83
Dependent Claim
23 words
A composition of claim 25 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 84
Dependent Claim
31 words
A composition of claim 81 wherein componet (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 85
Dependent Claim
23 words
A composition of claim 26 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 86
Dependent Claim
30 words
A composition of claim 83 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenolK, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 87
Dependent Claim
23 words
A composition of claim 27 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 88
Dependent Claim
31 words
A composition of claim 85 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 89
Dependent Claim
23 words
A composition of claim 28 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 90
Dependent Claim
31 words
A composition of claim 87 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 91
Dependent Claim
23 words
A composition of claim 29 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 92
Dependent Claim
31 words
A composition of claim 89 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 93
Dependent Claim
23 words
A composition of claim 30 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 94
Dependent Claim
31 words
A composition of claim 91 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 95
Dependent Claim
23 words
A composition of claim 31 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 96
Dependent Claim
31 words
A composition of claim 93 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
Claim 97
Dependent Claim
23 words
A composition of claim 32 which additionally contains (C) a material having an average of more than one phenolic hydroxyl group per molecule.
Claim 98
Dependent Claim
31 words
A composition of claim 95 wherein component (C) is biphenyl, bisphenol A, bisphenol K, tetrabromobisphenol A, tetrabromobisphenol K, tetramethylbiphenol, tetramethyltetrabromobiphenol, tetramethyltribromobiphenol, phenol-formaldehyde novolac resin, cresol-formaldehyde novolac resin or a combination thereof.
References Cited (Backward Citations)
CA858648A
Cited
CA893191A
Cited
US3547881A
Cited
US3477990A
Cited
US3948855A
Cited
US4175972A
Cited
US4150988A
Cited
US4136102A
Cited
US4069055A
Cited
US4318766A
Cited
US4273668A
Cited
US4173476A
Cited
US4154872A
Cited
US4366295A
Cited
US4358578A
Cited
JPS58138729A
Cited
US4496709A
Cited
US4438254A
Cited
US4554342A
Cited
US4544732A
Cited
US4581436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |