US3916067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition and resulting articles
Assignee: Phillips Petroleum Co
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Filing: 1974-01-11
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Granted: 1975-10-28
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Expires: 1994-01-11
Abstract
Abstract Polyester-polysulfide-polythiol reaction products of polyols and mixtures of mercaptoalkanoic acids and thiodialkanoic acids are used as curing agents for epoxy resins and the resulting compositions are useful as coatings, adhesives and the like.
Inventors
- 👤 Faber B Jones
- 👤 Ralph P Williams
- 👤 Richard C Doss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:03
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/26; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08L; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31529; Y10T428/31533; Y10T428/31786
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
172 words
AN ARTICLE WHICH IS AT LEAST ONE SUBSTRATE HAVING ON AT LEAST ONE SURFACE THEREOF A LAYER, EXHIBITING AN IMPROVED LAP SHEAR STRENGTH, BONDED THERETO OF A COMPOSITION COMPRISING THE REACTION PRODUCT OF A. AN EPOXY RESIN HAVING AT LEAST TWO ERMINAL 1,2-EPOXY GROUPS PERMOLECULE AND B. THE POLYESTER-POLYSULFIDE-POLYTIOL REACTON PRODUCT OF: I. A POLYOL HAVING ON AVERAGE MORE THAN TWO HYDROXY GROUPS PER MOLECULE AND UP TO 20 HYDROXY GROUPS PER MOLECULE AND UP TO 40 CARBON ATOMS PER HYDROCARBON MOIETY AND AN ACID MIXTURE OF II. A MERCAPTOALKANOIC ACID REPRESENTED BY THE FORMULA HS(CR2)NCOOH WHEREIN R IS HYDROGEN OR AN ALKYL HAVING FROM 1 TO 5 CARBON ATOMS, THE NUMBER OF CARBON ATOMS IN ALL R GROUPS PER MOLECULE IS NO MORE THAN 10. AND N IS AN INTEGER IN THE RANGE OF 1 TO 5, AND (III). A THIODIALKANOIC ACID REPRESENTED BY THE FORMULA HOOC(CR2)N-S-(CR2)N-COOH WHEREIN TE NUMBER OF CARBON ATOMS IN ALL R GROUPS PER MOLECULE ISNO MORE THAN 20, AN R AND N ARE AS PREVIOUSLY DEFINED.
Claim 2
Dependent Claim
172 words
AN ARTICLE WHICH IS AT LEAST ONE SUBSTRATE HAVING ON AT LEAST ONE SURFACE THEREOF A LAYER, EXHIBITING AN IMPROVED LAP SHEAR STRENGTH, BONDED THERETO OF A COMPOSITION COMPRISING THE REACTION PRODUCT OF A. AN EPOXY RESIN HAVING AT LEAST TWO ERMINAL 1,2-EPOXY GROUPS PERMOLECULE AND B. THE POLYESTER-POLYSULFIDE-POLYTIOL REACTON PRODUCT OF: I. A POLYOL HAVING ON AVERAGE MORE THAN TWO HYDROXY GROUPS PER MOLECULE AND UP TO 20 HYDROXY GROUPS PER MOLECULE AND UP TO 40 CARBON ATOMS PER HYDROCARBON MOIETY AND AN ACID MIXTURE OF II. A MERCAPTOALKANOIC ACID REPRESENTED BY THE FORMULA HS(CR2)NCOOH WHEREIN R IS HYDROGEN OR AN ALKYL HAVING FROM 1 TO 5 CARBON ATOMS, THE NUMBER OF CARBON ATOMS IN ALL R GROUPS PER MOLECULE IS NO MORE THAN 10. AND N IS AN INTEGER IN THE RANGE OF 1 TO 5, AND (III). A THIODIALKANOIC ACID REPRESENTED BY THE FORMULA HOOC(CR2)N-S-(CR2)N-COOH WHEREIN TE NUMBER OF CARBON ATOMS IN ALL R GROUPS PER MOLECULE ISNO MORE THAN 20, AN R AND N ARE AS PREVIOUSLY DEFINED.
Claim 3
Dependent Claim
15 words
An article according to claim 1 wherein said substrate is plastic, wood, ceramic, or metal.
Claim 4
Dependent Claim
36 words
An article according to claim 1 wherein in said composition said epoxy resin is the reaction product of epichlorohydrin and bisphenol A, and the number of thiol groups per epoxide group ranges from 0.8 to 1.2.
Claim 5
Dependent Claim
26 words
An article according to claim 1 wherein in said composition said polyol is pentaerythritol, and said acid mixture is a mixture of 3-mercaptopropionic and thiopropionic acids.
Claim 6
Dependent Claim
47 words
An article according to claim 1 wherein in said composition (a) is the reaction product of epichlorohydrin and bisphenol A and (b) is the reaction product of pentaerythritol and a mixture of 3-mercaptopropionic and thiodipropionic acids, and further wherein the composition additionally contains 2,4,6-tris(dimethylaminomethyl)phenol as an accelerator.
Claim 7
Dependent Claim
39 words
An article according to claim 1 wherein the substrate is metal and wherein (a) is the reaction product of epichlorohydrin and bisphenol A and (b) is the reaction product of pentaerythritol and a mixture of 3-mercaptopropionic and thiodipropionic acids.
Claim 8
Dependent Claim
24 words
An article which is a metal substrate having on at least one surface thereof a layer bonded thereto of the composition of claim 1.
Claim 9
Dependent Claim
26 words
An article according to claim 1 comprising a plurality of layers having the composition of claim 1 between adjacent surfaces thereof as a bonding material therefor.
Claim 10
Dependent Claim
11 words
An article according to claim 8 wherein the layers are metal.
Claim 11
Dependent Claim
72 words
A PROCESS FOR UNITING SURFACES OF PLASTIC, METAL, WOOD, AND CERAMICSUBSTRATES WHICH COMPRISES: A. APPLYING TO AT LEAST ONE OFSAID SURFACES (A) AND (B) AS DEFINED IN CLAIM 1, B. HOLDING SAID SURFACES CONTIGUOUS TO ONE ANOTER WITH SAID (A) AND (B) DISPOSED THEREBETWEEN, AND C. ALLOWING SAID (A) AND (B) TO REACT TO FORM A COMPOSITION TO BOND TO SAID SURFACES AND FORM A STRUCTURE HAVING AN INCREASED LAP SHEAR STRENGTH.
Claim 12
Dependent Claim
11 words
A process according to claim 10 wherein the layers are metal.
References Cited (Backward Citations)
US3746685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |