Patent US4361691A successfully refreshed from Google Patents.
US4361691A
Expired / Lapsed
US
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Process for production of heat-resistant compounds
Assignee: NTN Corp
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Filing: 1981-05-05
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Granted: 1982-11-30
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Expires: 2001-05-05
Abstract
Abstract A process for producing a heat-resistant compound, which comprises adding a diamine to an organic solvent-soluble metallosiloxane compound whose main chain consists of siloxane bonds --Si--O-- and metalloxane bonds --M--O-- wherein M represents at least one element selected from the group consisting of Ti, Zr, V, P, Al, Fe, Cr, Co, Ni, Ge, Sn, As, Mg, Pb and Sb, and heating the mixture to 50° to 450° C. in the presence or absence of an organic solvent.
Inventors
- 👤 Seishi Yajima
- 👤 Kiyohito Okamura
- 👤 Toetsu Shishido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:20
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/14; C08G; C08G77/00; C08G77/48; C08G77/54; C08G77/58; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A process for producing a heat-resistant compound, which comprises adding a diamine to an organic solvent-soluble metallosiloxane compound whose main chain consists of siloxane bonds --Si--O-- and metalloxane bonds --M--O-- wherein M represents at least one element selected from the group consisting of Ti, Zr, and Al, and heating the mixture to 50° to 450° C. in the presence or absence of an organic solvent.
Claim 2
Dependent Claim
65 words
A process for producing a heat-resistant compound, which comprises adding a diamine to an organic solvent-soluble metallosiloxane compound whose main chain consists of siloxane bonds --Si--O-- and metalloxane bonds --M--O-- wherein M represents at least one element selected from the group consisting of Ti, Zr, and Al, and heating the mixture to 50° to 450° C. in the presence or absence of an organic solvent.
Claim 3
Dependent Claim
37 words
The process of claim 1 wherein the ratio of the number of Si atoms constituting the siloxane bonds to that of M atoms constituting the metalloxane bonds (Si/M) is within the range of from 1:4 to 100:1.
Claim 4
Dependent Claim
52 words
The process of claim 1 wherein each Si atom in the metallosiloxane compound has at least one side-chain organic group bonded thereto, said organic group being at least one group selected from the group consisting of lower alkyl groups, a phenyl group, fluoroalkyl groups, a nitrile group, a vinyl group and hydrogen.
Claim 5
Dependent Claim
26 words
The process of claim 1 wherein the diamine is at least one compound selected from the group consisting of primary diamines, secondary diamines and tertiary diamines.
Claim 6
Dependent Claim
38 words
The process of claim 1 wherein the ratio of the total number of Si and M atoms in the metallosiloxane to the number of N atoms in the diamine is within the range of from 100:5 to 100:120.
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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) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |