Patent US4515979A successfully refreshed from Google Patents.
US4515979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of odors in polyorganosiloxanes
Assignee: Momentive Performance Materials Japan LLC
•
Filing: 1984-06-21
•
Granted: 1985-05-07
•
Expires: 2004-06-21
Abstract
Abstract A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane comprising adding phytic acid to the polyoxyalkylene group-containing polyorganosiloxane during and/or after its production.
Inventors
- 👤 Masaaki Otsuki
- 👤 Shinji Kida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:30
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55; A61K8/72; A61K8/84; A61K8/89; A61K8/891; A61K8/894; A61Q; A61Q19/00; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/20; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; A61Q5/00; A61Q5/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane comprising adding phytic acid to the polyoxyalkylene group-containing polyorganosiloxane during and/or after its production.
Claim 2
Dependent Claim
24 words
A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane comprising adding phytic acid to the polyoxyalkylene group-containing polyorganosiloxane during and/or after its production.
Claim 3
Dependent Claim
198 words
A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane as set forth in claim 1, wherein said polyoxyalkylene group-containing polyorganosiloxane is a compound represented by the general formula: A.sub.a R.sub.(3-a).sup.1 SiO(R.sub.2.sup.2 SiO).sub.n (R.sup.3 ASiO).sub.m SiR.sub.(3-a).sup.1 A.sub.a wherein A is a group represented by the general formula --R 4 (OR 5 ) p OR 6 , wherein R 4 is an alkylene group of 3 to 10 carbon atoms, or a group --(CH 2 ) 3 --O--CH 2 CH(OH)CH 2 --, R 5 is an alkylene group of 2 to 4 carbon atoms, R 6 is a hydrogen atom or an alkyl group of 1 to 18 carbon atoms, and p represents an integer of 3 to 70, R 1 , R 2 and R 3 may be the same or different and represent, independently, a member selected from the group consisting of a hydrogen atom, a hydrocarbon group of 1 to 20 carbon atoms and a halohydrocarbon group of 1 to 20 carbon atoms, a represents a number of 0 or 1, n represents a number of 0 to 180, m represents a number of 1 to 100, and n+m represents a number of 1 to 200.
Claim 4
Dependent Claim
23 words
A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane as set forth in claim 1, wherein said polyoxyalkylene group-containing polyorganosiloxane is water-soluble.
Claim 5
Dependent Claim
35 words
A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane as set forth in claim 1, wherein the amount of phytic acid used is 50 ppm to 500 ppm, based on the polyoxyalkylene group-containing polyorganosiloxane.
Claim 6
Dependent Claim
43 words
A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane as set forth in claim 1, wherein the amount of phytic acid is added to said polyoxyalkylene group-containing polyorganosiloxane during its production from a polyorganohydrogensiloxane or allylglycidyl ether adduct thereof and a polyoxyalkylene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |