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Patent US5194646A successfully refreshed from Google Patents.
US5194646A
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Polymerizable silicones having acetylenic unsaturation
Assignee: Nippon Paint Co Ltd
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Filing: 1992-01-15
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Granted: 1993-03-16
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Expires: 2012-01-15
Abstract
Abstract A silicone compound of the rational formula: <IMAGE> wherein R1 and R2 are independently a hydrogen atom or a hydrocarbon radical free from acetylenic unsaturaiton; Z is -O-, -S- or -NH-; Y is a divalent organic group; R3 is a hydrogen atom, an akyl, alkenyl, alkoxy or phenyl group; and m and n are rational numbers satisfy the ration of 4>m+n>/=2. The compound is useful as a precursor of nonemanating, self-curing and heat resistant silicone resins.
Inventors
- 👤 Mitsuo Yamada
- 👤 Hiroharu Ohsugi
- 👤 Ryuzo Mizuguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:15
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/045; C08G77/38; C08G77/382; C08G77/388
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
A compound of the rational formula: ##STR21## wherein R 1 and R 2 are independently a hydrogen atom or a hydrocarbon radical free from acetylenic unsaturation; Z is --O--, --S--, or --NH--; Y is a divalent organic group; R 3 is a hydrogen atom, or an alkyl, alkenyl, alkoxy or phenyl group; and m and n are rational numbers satisfying the relation of 4>m+n≧2.
Claim 2
Dependent Claim
64 words
A compound of the rational formula: ##STR21## wherein R 1 and R 2 are independently a hydrogen atom or a hydrocarbon radical free from acetylenic unsaturation; Z is --O--, --S--, or --NH--; Y is a divalent organic group; R 3 is a hydrogen atom, or an alkyl, alkenyl, alkoxy or phenyl group; and m and n are rational numbers satisfying the relation of 4>m+n≧2.
Claim 3
Dependent Claim
17 words
The compound as claimed in claim 1 having a number average molecular weight from 400 to 10,000.
Claim 4
Dependent Claim
21 words
The compound as claimed in claim 2, wherein Z is --O--, Y is a lower alkylene, and R 3 is methyl.
Claim 5
Dependent Claim
17 words
The compound as claimed in claim 2, wherein R 1 and R 2 are each hydrogen atom.
Claim 6
Dependent Claim
16 words
The compound as claimed in claim 3, wherein R 1 and R 2 are each methyl.
Claim 7
Dependent Claim
30 words
The compound as claimed in claim 2, wherein R 1 and R 2 are each hydrogen atom, Z is --S--, Y is a lower alkylene, and R 3 is methyl.
Claim 8
Dependent Claim
30 words
The compound as claimed in claim 2, wherein R 1 and R 2 are each hydrogen atom, Z is --NH--, Y is a lower alkylene, and R 3 is methyl.
Claim 9
Dependent Claim
49 words
A method for preparing the compound of claim 1 which comprises reacting a compound of the rational formula: [H--Z--Y--].sub.m [R.sup.3 --]SiO.sub.(4-m-n)/2 wherein Z, Y, R 3 , m and n are as defined, with a chloroformate of the formula: ##STR22## wherein R 1 and R 2 are as defined.
Claim 10
Dependent Claim
47 words
A method for producing the compound of claim 1 which comprises reacting a compound of the rational formula: ##STR23## wherein Z, Y, R 3 , m and n are as defined, with an alcohol of the formula: ##STR24## wherein R 1 and R 2 are as defined.
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) | 1996-03-15 | 1996-09-14 | 1997-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-15 | 2000-09-14 | 2001-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-15 | 2004-09-14 | 2005-03-16 | $7700.00 | Window Closed / Lapsed |