US3873499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast curing mercaptoalkyl vinyl siloxane resins
Assignee: Dow Silicones Corp
•
Filing: 1973-11-29
•
Granted: 1975-03-25
•
Expires: 1993-11-29
Abstract
Abstract Low temperature, fast curing electrical and coating resins, activated by ultraviolet or other low energy radiation, are obtained by mixing mercaptoalkyl siloxane resins with methylvinyl siloxanes and subjecting the mixture to ultraviolet light. An exemplary formulation is: 8.5 parts by weight of a copolymer of 20 mol percent mercaptopropyl siloxane, 50 mol percent monopropyl siloxane, 20 mol percent dimethyl siloxane and 10 mol percent monomethyl siloxane and 1.5 parts by weight of methylvinyl cyclosiloxane wherein the cyclics contain from 4 to 8 silicon atoms. These resins are particularly designed for circuit board coatings.
Inventors
- 👤 Keith W Michael
- 👤 Alan E Mink
- 👤 Darrell D Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08L; C08L83/00; C08L83/04; C08L83/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663; Y10T428/31678
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
7 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF
Claim 2
Dependent Claim
7 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF
Claim 3
Dependent Claim
40 words
A COPOLYMER OF 10 TO 30 MOL PERCENT HSR''SIO3/2, 10 TO 75 MOL PERCENT MONOPROPYL SILOXANE, 5 TO 35 MOL PERCENT DIMETHYLSILOXANE, AND 5 TO 43 MOL PERCENT MONOMETHYL SILOXANE, IN WHICH R'' IS A PROPYLENE OR ETHYLENE RADICAL AND
Claim 4
Dependent Claim
40 words
A COPOLYMER OF 10 TO 30 MOL PERCENT HSR''SIO3/2, 10 TO 75 MOL PERCENT MONOPROPYL SILOXANE, 5 TO 35 MOL PERCENT DIMETHYLSILOXANE, AND 5 TO 43 MOL PERCENT MONOMETHYL SILOXANE, IN WHICH R'' IS A PROPYLENE OR ETHYLENE RADICAL AND
Claim 5
Dependent Claim
30 words
A METHYLVINYLPOLYSLOXANE COMPATIBLE WITH (1) HAVING AN AVERAGE OF AT LEAST THREE VINYL GROUPS PER MOLECULE IN AMOUNT OF FROM 0.8 VINYL PER SH TO 1.2 VINYLS PER SH, AND
Claim 6
Dependent Claim
30 words
A METHYLVINYLPOLYSLOXANE COMPATIBLE WITH (1) HAVING AN AVERAGE OF AT LEAST THREE VINYL GROUPS PER MOLECULE IN AMOUNT OF FROM 0.8 VINYL PER SH TO 1.2 VINYLS PER SH, AND
Claim 7
Dependent Claim
30 words
a methylvinylpolysiloxane compatible with (1) having an average of at least three vinyl groups per molecule in amount of from 0.8 vinyl per SH to 1.2 vinyls per SH, and
Claim 8
Dependent Claim
30 words
a methylvinylpolysiloxane compatible with (1) having an average of at least three vinyl groups per molecule in amount of from 0.8 vinyl per SH to 1.2 vinyls per SH, and
Claim 9
Dependent Claim
20 words
The composition in accordance with claim 1 in which R'' is a propylene radical and (3) is para methoxy phenol.
Claim 10
Dependent Claim
14 words
A substrate coated with a cured mixture of (1) and (2) of claim 1.
Claim 11
Dependent Claim
8 words
a gellation inhibitor of the group consisting of
Claim 12
Dependent Claim
8 words
a gellation inhibitor of the group consisting of
Claim 13
Dependent Claim
8 words
A GELLATION INHIBITOR OF THE GROUP CONSISTING OF
Claim 14
Dependent Claim
8 words
A GELLATION INHIBITOR OF THE GROUP CONSISTING OF
Claim 15
Dependent Claim
14 words
A substrate coated with a cured mixture of (1) and (2) of claim 2.
References Cited (Backward Citations)
US3632715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |