US3843572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid curable polythiol compositions containing liquid polyenes and solid styrene-allyl alcohol copolymer based polythiols
Assignee: WR Grace and Co Conn
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Filing: 1972-05-05
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Granted: 1974-10-22
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Expires: 1992-05-05
Abstract
Abstract Novel solid polythiols are mercaptoester derivatives of styreneallyl alcohol copolymers. These solid polythiols are readily prepared by esterifying a styrene-allyl alcohol copolymer with a mercaptocarboxylic acid e.g. Beta -mercaptopropionic acid. The solid styrene-alyl alcohol based polythiols may be admixed with liquid polyenes thereby forming solid polyene-polythiol polymeric systems which are curable, particularly photocurable, in the solid state. Upon exposing the solid, curable polyene-polythiol compositions to a free radical generator e.g., UV light, solid cross-linked and chemically resistant polythioether products are formed which are particularly useful as coatings, photoresists, printing plates etc.
Inventors
- 👤 C Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/04; C08G75/045; C08F; C08F8/00; C08F8/14; C08G75/26; C08L; C08L81/00; C08L81/02; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/0275; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
14 words
A SOLID CURABLE COMPOSITION USEFUL FOR OBTAINING A SOLID CROSS-LINKED POYTHIOETHER CONSISTING ESSENTIALY OF:
Claim 2
Dependent Claim
14 words
A SOLID CURABLE COMPOSITION USEFUL FOR OBTAINING A SOLID CROSS-LINKED POYTHIOETHER CONSISTING ESSENTIALY OF:
Claim 3
Dependent Claim
27 words
A LIQUID POLYENE CONTAINING AT LEAST 2 REACTIVE UNSATURATED CARBON TO CARBON BONDS AND HAVING A MOLECULAR WEIGHT IN THE RANGE OF ABOUT 50 TO 20,000; AND
Claim 4
Dependent Claim
27 words
A LIQUID POLYENE CONTAINING AT LEAST 2 REACTIVE UNSATURATED CARBON TO CARBON BONDS AND HAVING A MOLECULAR WEIGHT IN THE RANGE OF ABOUT 50 TO 20,000; AND
Claim 5
Dependent Claim
15 words
A SOLID POLYTHIOL CONTAINING AT LEAST 2 THIOL GROUPS PER MOLECULE OF THE GENERAL FORMULA:
Claim 6
Dependent Claim
15 words
A SOLID POLYTHIOL CONTAINING AT LEAST 2 THIOL GROUPS PER MOLECULE OF THE GENERAL FORMULA:
Claim 7
Dependent Claim
15 words
a solid polythiol containing at least 2 thiol groups per molecule of the general formula:
Claim 8
Dependent Claim
15 words
a solid polythiol containing at least 2 thiol groups per molecule of the general formula:
Claim 9
Dependent Claim
20 words
A composition of claim 1 wherein the R3 radical in said polythiol is selected from the group consisting of -CH2-,
Claim 10
Dependent Claim
78 words
The composition of claim 1 wherein R3 in said polythiol is a divalent radical member selected from the group consisting of phenyl, benzyl, alkyl, cycloalkyl, substituted phenyl, substituted benzyl, substituted alkyl and substituted cycloalkyl, said substituents on said substituted members selected from the group consisting of nitro, chloro, bromo, acetoxy, acetoamide, phenyl, benzyl, alkyl and alkoxy and cycloalkyl; said alkyl and alkoxy having 1 to 9 carbon atoms and said cycloalkyl having from 3 to 8 carbon atoms.
Claim 11
Dependent Claim
14 words
An article comprising the composition of claim 1 as a coating on a substrate.
Claim 12
Dependent Claim
14 words
An article comprising the composition of claim 1 as an adhesive between two substrates.
Claim 13
Dependent Claim
10 words
A shaped, molded article cast from the composition of claim
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |