US4804737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siloxanes, their synthesis and use as deaerating agents for curable resins of plastisols
Assignee: Evonik Operations GmbH
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Filing: 1987-07-14
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Granted: 1989-02-14
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Expires: 2007-07-14
Abstract
Abstract Alkoxysiloxanes of the general formula ##STR1## are disclosed wherein R 1 is methyl or ##STR2## and/or ##STR3## the sum of the units a being 0 to 100, the sum of the units b being 0 to 15, with the proviso that the ratio of methyl to alkoxy groups in R 1 is less than 50:1, and that b≧1 when a=0 and a≧5 when b=0. The compounds may be synthesized by known methods from halogen- or alkoxysiloxanes, the alkoxy group of which has 1 to 4 carbon atoms. The compounds are effective deaerating agents for curable resins and plastisols. The invention is also directed to compositions containing the novel deaerating compounds as well as to methods for deaerating coating systems.
Inventors
- 👤 Roland Berger
- 👤 Hans-Ferdi Fink
- 👤 Otto Klocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:42
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C08L; C08L101/00; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
Compounds of the general formula ##STR12## wherein R 1 is selected from the group consisting of (1) methyl, ##STR13## and ##STR14## the sum of the units a being 0 to 100, the sum of the units b being 0 to 15, with the proviso that the ratio of methyl (1) to groups (2) and (3) in R 1 is less than 50:1, and that b≧1 when a=0 and a≧5 when b=0.
Claim 2
Dependent Claim
71 words
Compounds of the general formula ##STR12## wherein R 1 is selected from the group consisting of (1) methyl, ##STR13## and ##STR14## the sum of the units a being 0 to 100, the sum of the units b being 0 to 15, with the proviso that the ratio of methyl (1) to groups (2) and (3) in R 1 is less than 50:1, and that b≧1 when a=0 and a≧5 when b=0.
Claim 3
Dependent Claim
11 words
The compounds of claim 1, wherein a=3 to 6 and b=1-3.
Claim 4
Dependent Claim
25 words
The compounds of claim 1, wherein the sum of the values for a is between 10 to 60 when b has a value of 0.
Claim 5
Dependent Claim
17 words
Compounds of claim 1, wherein the compounds are members selected from the group consisting of ##STR15## ##STR16##
Claim 6
Dependent Claim
11 words
A deaerating agent essentially consisting of a compound of claim 1.
References Cited (Backward Citations)
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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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |