US4021464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boric acid esters
Assignee: Sandoz AG
•
Filing: 1975-03-07
•
Granted: 1977-05-03
•
Expires: 1995-03-07
Abstract
Abstract The invention provides novel boric acid esters, useful as flame retardants.
Inventors
- 👤 Horst Mayerhoefer
- 👤 Wolfgang Mueller
- 👤 Urs Sollberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:53
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C08; C08K; C08K5/00; C08K5/55; D; D06; D06M; D06M13/00; D06M13/50; D06M13/51; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
95 words
A compound of the formula ##STR20## in which each Q is, independently, chloro or bromo n is 1, 2, 3 or 4, and Z is selected from the group consisting of n-valent hydrocarbon groups of up to 20 carbon atoms which consist of aromatic and/or saturated aliphatic units, which may be interrupted once or twice by an oxygen or sulphur atom, the imino group or by an alkylimino group of 1 to 6 carbon atoms, and which may be unsubstituted or substituted by one or more bromine or chlorine atoms or hydroxyl or amino groups.
Claim 2
Dependent Claim
95 words
A compound of the formula ##STR20## in which each Q is, independently, chloro or bromo n is 1, 2, 3 or 4, and Z is selected from the group consisting of n-valent hydrocarbon groups of up to 20 carbon atoms which consist of aromatic and/or saturated aliphatic units, which may be interrupted once or twice by an oxygen or sulphur atom, the imino group or by an alkylimino group of 1 to 6 carbon atoms, and which may be unsubstituted or substituted by one or more bromine or chlorine atoms or hydroxyl or amino groups.
Claim 3
Dependent Claim
90 words
A compound of claim 1, in which Z is a straight, branched or cyclic alkyl or aralkyl group of up to 12 carbon atoms, which may be interrupted by one or two oxygen or sulphur atoms, or by the imino or an alkyl-imino group of 1 to 6 carbon atoms, and which is unsubstituted or substituted by an hydroxyl or amino group or by 1 to 5 bromine and/or chlorine atoms on a carbon atom bound to a tertiary carbon atom and/or on an aromatic ring, and n is 1.
Claim 4
Dependent Claim
44 words
A compound of claim 1, in which Z is an aryl group of up to 12 carbon atoms which is unsubstituted or substituted by one or more alkyl groups of 1 to 6 carbon atoms, or bromine and/or chlorine atoms, and n is 1.
Claim 5
Dependent Claim
91 words
A compound of claim 1, in which Z is a straight, branched or cyclic alkylene or aralkylene group with 2 to 12 carbon atoms, which may be interrupted by one or two oxygen or sulphur atoms, or by the imino group or an alkylimino group of 1 to 6 carbon atoms, and which is unsubstituted or is substituted by a hydroxyl or amino group, by 1 to 5 bromine and/or chlorine atoms on a carbon atom bound to a tertiary carbon atom and/or to an aromatic ring, and n is 2.
Claim 6
Dependent Claim
55 words
A compound of claim 1, in which Z is an arylene group having at the most 12 carbon atoms, which may be interrupted by a lower alkylene group and which is unsubstituted or substituted by one or more alkyl group of 1 to 6 carbon atoms, or bromine and/or chlorine atoms, and n is 2.
Claim 7
Dependent Claim
36 words
A compound of claim 1, in which Z is a trivalent group of formula VII ##STR21## in which R is alkyl of 1 to 6 carbon atoms or a group Q--CH 2 and n is 3.
Claim 8
Dependent Claim
20 words
A compound of claim 1, in which Z is the tetravalent group of formula VIII, ##STR22## and n is 4.
Claim 9
Dependent Claim
8 words
A compound of claim 1 of formula ##STR23##
Claim 10
Dependent Claim
8 words
A compound of claim 1 of formula ##STR24##
Claim 11
Dependent Claim
8 words
A compound of claim 1 of formula ##STR25##
Claim 12
Dependent Claim
8 words
A compound of claim 1 of formula ##STR26##
Claim 13
Dependent Claim
8 words
A compound of claim 1 of formula ##STR27##
Claim 14
Dependent Claim
8 words
A compound of claim 1 of formula ##STR28##
Claim 15
Dependent Claim
9 words
A compound of claim 1 of the formula ##STR29##
Claim 16
Dependent Claim
9 words
A compound of claim 1 of the formula ##STR30##
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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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |