US4122067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reacting a polyepoxide compound with a phenol in aqueous medium
Assignee: Shell USA Inc
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Filing: 1977-10-07
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Granted: 1978-10-24
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Expires: 1997-10-07
Abstract
Abstract Polyhydroxypolyether resins are prepared by reacting in water as a dispersion an epoxide compound which has more than one 1,2-epoxy group per molecule with a dihydric phenol. The reaction is conducted in the presence of a nonionic dispersant at a temperature of about 80° C. to about 100° C. using, as a catalyst, an organic phosphine, a tertiary amine, or a quaternary ammonium or phosphonium compound. The polyhydroxypolyether resins are useful in coating compositions, molding compounds, encapsulating compositions, adhesives and the like.
Inventors
- 👤 Terry Leroy Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/18; C08G59/40; C08G59/62; C08G59/621; C08G59/68
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
98 words
In a process for preparing higher molecular weight polyhydroxypolyether resins by the reaction of an epoxide compound which contains more than one 1,2-epoxy groups per molecule with a dihydric phenol in the molar ratio of 2:1 to 1:2 using as a catalyst an organic phosphine, a tertiary amine, or a quaternary ammonium or phosphonium compound, the improvement which comprises conducting the reaction in water at a temperature of about 80° C. to about 100° C. and, in the presence of a nonionic dispersant, recovering the polyhydroxypolyether resin in the form of solid granules of as a stable dispersion.
Claim 2
Dependent Claim
98 words
In a process for preparing higher molecular weight polyhydroxypolyether resins by the reaction of an epoxide compound which contains more than one 1,2-epoxy groups per molecule with a dihydric phenol in the molar ratio of 2:1 to 1:2 using as a catalyst an organic phosphine, a tertiary amine, or a quaternary ammonium or phosphonium compound, the improvement which comprises conducting the reaction in water at a temperature of about 80° C. to about 100° C. and, in the presence of a nonionic dispersant, recovering the polyhydroxypolyether resin in the form of solid granules of as a stable dispersion.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the nonionic dispersant is present throughout the reaction.
Claim 4
Dependent Claim
24 words
The process of claim 1 wherein the nonionic dispersant is added after the initial reaction of epoxide compound and dihydric phenol has been completed.
Claim 5
Dependent Claim
24 words
The process of claim 1 wherein the reaction is conducted at a solids content of about 40 weight percent to about 90 weight percent.
Claim 6
Dependent Claim
27 words
The process of claim 4 wherein the solids content is about 40 weight percent to about 75 percent and the reaction product is recovered as solid granules.
Claim 7
Dependent Claim
29 words
The process of claim 4 wherein the solids content is about 75 weight percent to about 90 weight percent and the reaction product is recovered as a stable dispersion.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein the catalyst is used in the amount of about 0.3 to about 3.0 weight percent based on the weight of reactants.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein the catalyst is triphenyl phosphine.
Claim 10
Dependent Claim
28 words
The process of claim 1 wherein the nonionic dispersant is present in the amount of about 0.1 to about 15 weight percent based on the weight of reactants.
Claim 11
Dependent Claim
12 words
The process of claim 1 wherein the nonionic dispersant is hydroxyethyl cellulose.
Claim 12
Dependent Claim
31 words
The process of claim 1 wherein the nonionic dispersant is a block polymer of ethylene oxide and polypropylene glycol having an experimentally determined hydrophile-lipophile balance of about 24 to about 32.
Claim 13
Dependent Claim
64 words
The process of claim 1 wherein the nonionic dispersant is a polymer made by reacting polyoxyethylene glycols having a molecular weight of about 2,000 to about 20,000 with polyglycidyl polyethers of polyhydric phenols having a molecular weight of about 300 to about 2,000 in a molar ratio of 2:1 to 6:5, said dispersant having a calculated hydrophile-lipophile balance of about 16 to about 19.5.
Claim 14
Dependent Claim
17 words
The process of claim 1 wherein the epoxide compound is the glycidyl polyether of p,p' -dihydroxydiphenyl propane.
Claim 15
Dependent Claim
13 words
The process of claim 13 wherein the dihydric phenol is p,p' -dihydroxydiphenyl propane.
Claim 16
Dependent Claim
13 words
The process of claim 13 wherein the dihydric phenol is 2,2'-bis(3,5-dibromo, 4-hydroxyphenyl) propane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |