US3957906A
Expired / Lapsed
US
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Chemically resistant polyester resins compositions
Assignee: Beazer East Inc
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Filing: 1974-09-12
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Granted: 1976-05-18
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Expires: 1994-09-12
Abstract
Abstract Cured polyester resin products having improved chemical resistance are prepared from a curable polyester resin comprising: A. an ethylenically unsaturated polyester having: a molecular weight of about 1,000 to about 4,000; an acid number of no greater than about 30; and a fumarate/maleate weight proportion of at least about 80%/20%, said polyester being the polyesterification reaction product of fumaric acid or maleic anhydride or mixture thereof and an acyclic glycol having a molecular weight of no greater than about 200 and an oxygen content of less than 42.6 wt. %; and B. a vinyl monomeric crosslinking agent in an amount such that the molar ratio of the ethylenic reactive unsaturation in said crosslinking agent to the ethylenic reactive unsaturation of said polyester is at least about 3 to 1, and wherein at least 50 wt. % of said crosslinking agent is styrene; and Wherein said polyester is capable of being dissolved by said crosslinking agent at room temperature to form therewith a substantially homogeneous liquid solution.
Inventors
- 👤 Lloyd R. Buzbee
- 👤 Robert D. Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:35
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
220 words
A curable polyester resin composition for preparing thermoset articles having improved chemically resistant properties comprising: A. an ethylenically unsaturated polyester having a molecular weight of about 1,000 to about 4,000; an acid number of no greater than about 30; and a fumarate to maleate weight proportion of at least about 80%/20%; said polyester being the polyesterification product of fumaric acid or maleic anhydride or mixtures thereof and an acyclic glycol having a molecular weight of no greater than about 200 and an oxygen content of less than 42.6 wt. %, wherein the amount of said fumaric acid or maleic anhydride is at least about 80 mole % of the acid reactant used to prepare said polyester and wherein the amount of said acyclic glycol is at least about 50 mole % of the polyol reactant used to prepare said polyester; and B. a vinyl monomeric crosslinking agent in an amount such that the molar ratio of the ethylenic reactive unsaturation in said crosslinking agent to the ethylenic reactive unsaturation of said polyester is between about 3 to 1 and about 5 to 1, and wherein at least 50 wt. % of said crosslinking agent is styrene; and wherein said polyester is capable of being dissolved by said crosslinking agent at room temperature to form therewith a substantially homogeneous liquid solution.
Claim 2
Dependent Claim
220 words
A curable polyester resin composition for preparing thermoset articles having improved chemically resistant properties comprising: A. an ethylenically unsaturated polyester having a molecular weight of about 1,000 to about 4,000; an acid number of no greater than about 30; and a fumarate to maleate weight proportion of at least about 80%/20%; said polyester being the polyesterification product of fumaric acid or maleic anhydride or mixtures thereof and an acyclic glycol having a molecular weight of no greater than about 200 and an oxygen content of less than 42.6 wt. %, wherein the amount of said fumaric acid or maleic anhydride is at least about 80 mole % of the acid reactant used to prepare said polyester and wherein the amount of said acyclic glycol is at least about 50 mole % of the polyol reactant used to prepare said polyester; and B. a vinyl monomeric crosslinking agent in an amount such that the molar ratio of the ethylenic reactive unsaturation in said crosslinking agent to the ethylenic reactive unsaturation of said polyester is between about 3 to 1 and about 5 to 1, and wherein at least 50 wt. % of said crosslinking agent is styrene; and wherein said polyester is capable of being dissolved by said crosslinking agent at room temperature to form therewith a substantially homogeneous liquid solution.
Claim 3
Dependent Claim
11 words
A thermoset article prepared from the resin composition of claim 1.
Claim 4
Dependent Claim
15 words
A resin composition according to claim 1 wherein said acyclic glycol is an asymmetrical glycol.
Claim 5
Dependent Claim
32 words
A resin composition according to claim 3 wherein said acyclic asymmetrical glycol is selected from the group consisting of propylene glycol, dipropylene glycol, tripropylene glycol, 1,3-butane diol and 2,2,4-trimethylpentane-1,3-diol, and mixtures thereof.
Claim 6
Dependent Claim
41 words
A resin composition according to claim 1 wherein said polyol reactant includes no more than about 50 mole % of a polyol selected from the group consisting of hydrogenated bisphenol-A, propoxylated bisphenol-A, cyclohexanedimethanol, propoxylated tetrabromobisphenol-A and 4,4/-(bis-2 hydroxyethylamino)-octochlorobiphenyl and mixtures thereof.
Claim 7
Dependent Claim
41 words
A resin composition according to claim 3 wherein said polyol reactant includes no more than about 50 mole % of a polyol selected from the group consisting of hydrogenated bisphenol-A, propoxylated bisphenol-A, cyclohexanedimethanol, propoxylated tetrabromobisphenol-A and 4,4/-(bis-2 hydroxyethylamino)-octochlorobiphenol and mixtures thereof.
Claim 8
Dependent Claim
41 words
A resin composition according to claim 4 wherein said polyol reactant includes no more than about 50 mole % of a polyol selected from the group consisting of hydrogenated bisphenol-A, propoxylated bisphenol-A, cyclohexanedimethanol, propoxylated tetrabromobisphenol-A and 4,4/-(bis-2 hydroxyethylamino)-octochlorobiphenyl and mixtures thereof.
Claim 9
Dependent Claim
20 words
A resin composition according to claim 1 wherein said acyclic glycol is a mixture of two or more symmetrical glycols.
Claim 10
Dependent Claim
23 words
A resin composition according to claim 3 wherein said polyol reactant includes no more than about 50 mole % of a symmetrical glycol.
Claim 11
Dependent Claim
23 words
A resin composition according to claim 4 wherein said polyol reactant includes no more than about 50 mole % of a symmetrical glycol.
Claim 12
Dependent Claim
30 words
A resin composition according to claim 9 wherein said symmetrical glycol is selected from the group consisting of neopentyl glycol, 1,6-hexane diol, 1,4-butane diol and dibromoneopentyl glycol and mixtures thereof.
Claim 13
Dependent Claim
30 words
A resin composition according to claim 10 wherein said symmetrical glycol is selected from the group consisting of neopentyl glycol, 1,6-hexane diol, 1,4-butane diol and dibromoneopentyl glycol and mixtures thereof.
Claim 14
Dependent Claim
196 words
A curable polyester resin composition for preparing thermoset articles having improved chemically resistant properties comprising: A. an ethylenically unsaturated polyester having a molecular weight of about 2,000 to about 3,500; an acid number of about 5 to about 15; a fumarate to maleate weight proportion of at least about 90%/10%; said polyester being the polyesterification product of fumaric acid or maleic anhydride or mixture thereof and an acyclic glycol having a molecular weight of no greater than about 200 and an oxygen content of less than 42.6 wt. %, wherein the amount of said fumaric acid or maleic anhydride is at least about 80 mole % of the acid reactant used to prepare said polyester and wherein the amount of said acyclic glycol is at least about 50 mole % of the polyol reactant used to prepare said polyester; and B. styrene in an amount such that the molar ratio of said styrene to the ethylenic reactive unsaturation of said polyester is between about 3 to 1 and about 5 to 1; and wherein said polyester is capable of being dissolved by said crosslinking agent at room temperature to form therewith a substantially homogeneous liquid solution.
Claim 15
Dependent Claim
196 words
A curable polyester resin composition for preparing thermoset articles having improved chemically resistant properties comprising: A. an ethylenically unsaturated polyester having a molecular weight of about 2,000 to about 3,500; an acid number of about 5 to about 15; a fumarate to maleate weight proportion of at least about 90%/10%; said polyester being the polyesterification product of fumaric acid or maleic anhydride or mixture thereof and an acyclic glycol having a molecular weight of no greater than about 200 and an oxygen content of less than 42.6 wt. %, wherein the amount of said fumaric acid or maleic anhydride is at least about 80 mole % of the acid reactant used to prepare said polyester and wherein the amount of said acyclic glycol is at least about 50 mole % of the polyol reactant used to prepare said polyester; and B. styrene in an amount such that the molar ratio of said styrene to the ethylenic reactive unsaturation of said polyester is between about 3 to 1 and about 5 to 1; and wherein said polyester is capable of being dissolved by said crosslinking agent at room temperature to form therewith a substantially homogeneous liquid solution.
Claim 16
Dependent Claim
15 words
A resin commposition according to claim 13 wherein said acyclic glycol is an asymmetrical glycol.
Claim 17
Dependent Claim
32 words
A resin composition according to claim 14 wherein said acyclic asymmetrical glycol is selected from the group consisting of propylene glycol, dipropylene glycol, tripropylene glycol, 1,3-butane diol, and 2,2,4-trimethylpentane-1,3-diol, and mixtures thereof.
Claim 18
Dependent Claim
41 words
A resin composition according to claim 13 wherein said polyol reactant includes no more than about 50 mole % of a polyol selected from the group consisting of hydrogenated bisphenol-A, prpoxylated bisphenol-A, cyclohexanedimethanol, propoxylated tetrabromobisphenol-A and 4,4/-(bis-2 hydroxyethylamin0)-octochlorobiphenyl and mixtures thereof.
Claim 19
Dependent Claim
41 words
A resin composition according to claim 14 wherein said polyol reactant includes no more than about 50 mole % of a polyol selected from the group consisting of hydrogenated bisphenol-A, propoxylated bisphenol-A, cyclohexanedimethanol, propoxylated tetrabromobisphenol-A and 4,4/-(bis-2 hydroxyethylamino)-octochlorobiphenyl and mixtures thereof.
Claim 20
Dependent Claim
41 words
A resin composition according to claim 15 wherein said polyol reactant includes no more than about 50 mole % of a polyol selected from the group consisting of hydrogenated bisphenol-A, proproxylated bisphenol-A, cyclohexanedimethanol, propoxylated tetrabromobisphenol-A and 4,4/-(bis-2 hydroxyethylamino)-octochlorobiphenyl and mixtures thereof.
Claim 21
Dependent Claim
20 words
A resin composition according to claim 13 wherein said acyclic glycol is a mixture of two or more symmetrical glycols.
Claim 22
Dependent Claim
23 words
A resin composition according to claim 14 wherein said polyol reactant includes no more than about 50 mole % of a symmetrical glycol.
Claim 23
Dependent Claim
23 words
A resin composition according to claim 15 wherein said polyol reactant includes no more than about 50 mole % of a symmetrical glycol.
Claim 24
Dependent Claim
30 words
A resin composition according to claim 20 wherein said symmetrical glycol is selected from the group consisting of neopentyl glycol, 1,6-hexane diol, 1,4-butane diol and dibromoneopentyl glycol and mixtures thereof.
Claim 25
Dependent Claim
30 words
A resin composition according to claim 21 wherein said symmetrical glycol is selected from the group consisting of neopentyl glycol, 1,6-hexane diol, 1,4-butane diol and dibromoneopentyl glycol and mixtures thereof.
Claim 26
Dependent Claim
124 words
A curable polyester resin composition for preparing thermoset articles having improved chemically resistant properties comprising: A. a polyester prepared from dipropylene glycol and either maleic anhydride or fumaric acid or mixtures thereof and having a molecular weight within the range of about 2,000 to about 3,500, an acid number of about 5 to about 15 and a fumarate/maleate weight proportion of about 90%/10% to about 100%/0%; and B. styrene in an amount such that the molar ratio of said styrene to the ethylenic reactive unsaturation of said polyester is within the range of about 3 to 1 to about 5 to 1; and wherein said polyester is capable of being dissolved in said styrene at room temperature to form a substantially homogeneous liquid solution.
Claim 27
Dependent Claim
124 words
A curable polyester resin composition for preparing thermoset articles having improved chemically resistant properties comprising: A. a polyester prepared from dipropylene glycol and either maleic anhydride or fumaric acid or mixtures thereof and having a molecular weight within the range of about 2,000 to about 3,500, an acid number of about 5 to about 15 and a fumarate/maleate weight proportion of about 90%/10% to about 100%/0%; and B. styrene in an amount such that the molar ratio of said styrene to the ethylenic reactive unsaturation of said polyester is within the range of about 3 to 1 to about 5 to 1; and wherein said polyester is capable of being dissolved in said styrene at room temperature to form a substantially homogeneous liquid solution.
Claim 28
Dependent Claim
11 words
A thermoset article prepared from the resin composition of claim 24.
Claim 29
Dependent Claim
11 words
A thermoset article prepared from the resin composition of claim 13.
Claim 30
Dependent Claim
11 words
A thermoset article prepared from the resin composition of claim 15.
Claim 31
Dependent Claim
28 words
A resin composition according to claim 4 wherein the amount of said asymmetrical glycol is about 100 mole % of the polyol reactant used to prepare said polyester.
Claim 32
Dependent Claim
28 words
A resin composition according to claim 15 wherein the amount of said asymmetrical glycol is about 100 mole % of the polyol reactant used to prepare said polyester.
Claim 33
Dependent Claim
16 words
A resin composition according to claim 4 wherein said acyclic polyol is a halogenated derivative thereof.
Claim 34
Dependent Claim
16 words
A resin composition according to claim 15 wherein said acyclic polyol is a halogenated derivative thereof.
References Cited (Backward Citations)
CA801122A
Cited
CA860400A
Cited
US2443735A
Cited
US2632753A
Cited
US3373144A
Cited
FR1419760A
Cited
NL131512C
Cited
US3538188A
Cited
US3435094A
Cited
US3466264A
Cited
US3819760A
Cited
US3814724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |