Patent US4995868A successfully refreshed from Google Patents.
US3898349A
Expired / Lapsed
US
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Polyene/polythiol paint vehicle
Assignee: WR Grace and Co Conn
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Filing: 1974-07-01
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Granted: 1975-08-05
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Expires: 1994-07-01
Abstract
Abstract A paint vehicle is prepared from a composition comprising (1) about 98 to 2% by weight of a liquid polyene containing at least terminal 2 reactive unsaturated carbon to carbon bonds per molecule and (2) about 2 to 98% by weight of a polythiol containing at least two thiol groups per molecule, the total combined functionality of (a) the reactive unsaturated carbon to carbon bonds per molecule in the polyene and (b) the thiol groups per molecule in the polythiol being greater than 4, which composition is curable, preferably under ambient conditions, in the presence of a free radical generator such as electromagnetic radiation of wave-length of about 2000-7000 A or high energy ionizing radiation. In instances where the free radical generator is electro-magnetic radiation, a curing rate accelerator in an amount ranging from 0.0005 to 50% by weight of said composition is added to the polyene/polythiol composition. The resultant vehicle, in pigmented form, can be used per se as a solventless paint or can be used with an inert organic solvent or as a watersoluble or water-dispersible paint.
Inventors
- 👤 Clifton L Kehr
- 👤 Walter R Wszolek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:10
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28; C08G; C08G75/00; C08G75/02; C08G75/04; C08G75/045; C08G75/12; C09; C09D; C09D181/00; C09D181/02; C08J2381/00; C08J2381/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
18 words
THE PROCESS OF COATING A SUBSTRATE WHICH COMPRISES APPLYING TO A SUBSTRATE A CURABLE COMPOSITION CONSISTING ESSENTIALLY OF:
Claim 2
Dependent Claim
18 words
THE PROCESS OF COATING A SUBSTRATE WHICH COMPRISES APPLYING TO A SUBSTRATE A CURABLE COMPOSITION CONSISTING ESSENTIALLY OF:
Claim 3
Dependent Claim
39 words
ABOUT 98 TO 2 PERCENT BY WEIGHT OF A LIQUID POLYENE CONTAINING NAT LEAST 2 TERMINAL REACTIVE UNSATURATED CARBON TO CARBON ONDS PER MOLECULE OF THE GENERAL FORMULA: (A$$)M WHEREIN X IS A MEMBER OF THE GROUP CONSISTING OF
Claim 4
Dependent Claim
39 words
ABOUT 98 TO 2 PERCENT BY WEIGHT OF A LIQUID POLYENE CONTAINING NAT LEAST 2 TERMINAL REACTIVE UNSATURATED CARBON TO CARBON ONDS PER MOLECULE OF THE GENERAL FORMULA: (A$$)M WHEREIN X IS A MEMBER OF THE GROUP CONSISTING OF
Claim 5
Dependent Claim
85 words
about 2 to 98 percent by weight of a polythiol containing at least 2 thiol groups per molecule, the total combined functionality of (a) the reactive terminal unsaturated carbon to carbon bonds per molecule in the polyene and (b) the thiol groups per molecule in the polythiol being greater than 4, and exposing said curable composition under ambient conditions to a free radical generator to form a solidified, cured polythioether coating having a thickness ranging from 1 micron to 20 mils adhering to said substrate.
Claim 6
Dependent Claim
85 words
about 2 to 98 percent by weight of a polythiol containing at least 2 thiol groups per molecule, the total combined functionality of (a) the reactive terminal unsaturated carbon to carbon bonds per molecule in the polyene and (b) the thiol groups per molecule in the polythiol being greater than 4, and exposing said curable composition under ambient conditions to a free radical generator to form a solidified, cured polythioether coating having a thickness ranging from 1 micron to 20 mils adhering to said substrate.
Claim 7
Dependent Claim
23 words
The process according to claim 1 wherein said curable composition contains 10 to 300% by weight of said curable compositon of a pigment.
Claim 8
Dependent Claim
41 words
Process according to claim 1 wherein the curable compositijon contains 0.0005 to 50% by weight of said curable composition of a curing rate accelerator and the free radical generator is electromagnetic radiation having a wave-length ranging from 2000 to 7000 A.
Claim 9
Dependent Claim
16 words
The process according to claim 1 wherein the free radical generator is high energy ionizing radiation.
Claim 10
Dependent Claim
39 words
Process according to claim 2 wherein the curable composition contains 0.0005 to 50% by weight of said curable composition of a curing rate accelerator and the free radical generator is electromagnetic radiation having a wave-length ranging from 2000-7000 A.
Claim 11
Dependent Claim
16 words
The process according to claim 2 wherein the free radical generator is high energy ionizing radiation.
Claim 12
Dependent Claim
49 words
The process according to claim 1 wherein 20 to 700 weight percent based on the weight of the curable composition of a thinner selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons and water is added to the curable composition prior to applying said composition to a substrate.
Claim 13
Dependent Claim
49 words
The process according to claim 2 wherein 20 to 700 weight percent based on the weight of the curable composition of a thinner selected from the group consisting of aliphatic hydrocarbons, aromatic hyrocarbons and water is added to the curable composition prior to applying said composition to a substate
Claim 14
Dependent Claim
47 words
The process according claim 3 independently 20 to 700 weight percent based on the weight of the curable composition of thinner selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons and water is added to the curable composition prior to applying said composition to a substrate.
Claim 15
Dependent Claim
49 words
The process according to claim 4 wherein 20 to 700 weight percent based on the weight of the curable compositjion of a thinner selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons and water is added to the curable composition prior to applying said composition to a substrate.
Claim 16
Dependent Claim
24 words
The process according to claim 1 wherein said curable composition is contained in an aqueous medium and contains about 20 to about 60% solids.
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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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |