US4600790A
Expired / Lapsed
US
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Silicon compounds containing SiC-bonded biuret groups and a method for preparing the same
Assignee: Wacker Chemie AG
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Filing: 1985-02-22
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Granted: 1986-07-15
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Expires: 2005-02-22
Abstract
Abstract Organosilicon compounds containing SiC-bonded biuret groups are prepared by (I) adding a silane containing 1 or 2 silicon atoms per molecule and an SiC-bonded organic radical having at least one basic ##STR1## group and at least one SiOC-bonded aliphatic radical per molecule to a monoisocyanate or a diisocyanate at a temperature up to 125° C. and (II) maintaining the temperature at 110° C. to 125° C. for at least two minutes. In an alternate procedure the silane and mono- or diisocyanate may be heated to a temperature in the range of from 110° C. up to 200° C. for at least two minutes, after or while adding additional monoisocyanate or diisocyanate. The resultant silicon compounds are used in the preparation of polyurethanes and as additives to lacquers.
Inventors
- 👤 Herbert Eck
- 👤 Hartmut Menzel
- 👤 Reinhard Jira
- 👤 Alfred Prasse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:13
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/778; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C09; C09D; C09D7/00; C09D7/40; C09D7/60; C09D7/63; C08K; C08K5/00; C08K5/54; C08K5/544; C08K5/5455
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
118 words
Silicon compounds containing SiC-bonded biuret groups and SiOC-bonded aliphatic radicals which are obtained by (I) the addition of a silane containing up to 2 silicon atoms per molecule and an SiC-bonded organic radical which has at least one basic ##STR11## group and at least one SiOC-bonded aliphatic radical per molecule to an isocyanate selected from the group consisting of a monoisocyanate, a diisocyanate and mixtures thereof in an amount of at least 1 gram-equivalent of --NCO group per gram-equivalent of ##STR12## group present in the silane at a temperature up to 125° C.; and thereafter (II) the product obtained in (I) is maintained for at least 2 minutes at a temperature of from 110° C. to 125° C.
Claim 2
Dependent Claim
118 words
Silicon compounds containing SiC-bonded biuret groups and SiOC-bonded aliphatic radicals which are obtained by (I) the addition of a silane containing up to 2 silicon atoms per molecule and an SiC-bonded organic radical which has at least one basic ##STR11## group and at least one SiOC-bonded aliphatic radical per molecule to an isocyanate selected from the group consisting of a monoisocyanate, a diisocyanate and mixtures thereof in an amount of at least 1 gram-equivalent of --NCO group per gram-equivalent of ##STR12## group present in the silane at a temperature up to 125° C.; and thereafter (II) the product obtained in (I) is maintained for at least 2 minutes at a temperature of from 110° C. to 125° C.
Claim 3
Dependent Claim
71 words
The silicon compounds of claim 1, wherein a monoisocyanate is used in Stage (I) in an amount up to 2 gram-equivalents of --NCO groups per gram-equivalent of ##STR13## group present in the silane and the product obtained from Stage (I) is heated to a temperature in the range of from 110° C. to 200° C. for at least two minutes in Stage (II) after or during the addition of additional isocyanate.
Claim 4
Dependent Claim
71 words
The silicon compounds of claim 1, wherein a diisocyanate is used in Stage (I) in an amount up to 3 gram-equivalents of --NCO groups per gram-equivalent of ##STR14## group present in the silane and the product obtained from Stage (I) is heated to a temperature in the range of from 110° C. to 200° C. for at least two minutes in Stage (II) after or during the addition of additional isocyanate.
Claim 5
Independent Claim
113 words
A method for preparing silicon compounds containing SiC-bonded biuret groups and SiOC-bonded aliphatic radicals which comprises adding (I) a silane containing up to 2 silicon atoms per molecule and an SiC-bonded organic radical which has at least one basic ##STR15## group and at least one SiOC-bonded aliphatic radical per molecule to an isocyanate selected from the group consisting of a monoisocyanate, a diisocyanate and mixtures thereof in an amount of at least 1 gram-equivalent of --NCO group per gram-equivalent of ##STR16## group present in the silane at a temperature up to 125° C.; and thereafter (II) maintaining the product obtained in (I) for at least 2 minutes at 110° C. to 125° C.
Claim 6
Independent Claim
113 words
A method for preparing silicon compounds containing SiC-bonded biuret groups and SiOC-bonded aliphatic radicals which comprises adding (I) a silane containing up to 2 silicon atoms per molecule and an SiC-bonded organic radical which has at least one basic ##STR15## group and at least one SiOC-bonded aliphatic radical per molecule to an isocyanate selected from the group consisting of a monoisocyanate, a diisocyanate and mixtures thereof in an amount of at least 1 gram-equivalent of --NCO group per gram-equivalent of ##STR16## group present in the silane at a temperature up to 125° C.; and thereafter (II) maintaining the product obtained in (I) for at least 2 minutes at 110° C. to 125° C.
Claim 7
Dependent Claim
70 words
The method of claim 4, wherein a monoisocyanate is used in Stage (I) in an amount up to 2 gram-equivalents of --NCO groups per gram-equivalent of ##STR17## group present in the silane, and the product obtained from Stage (I) is heated to a temperature in the range of from 110° C. to 200° C. for at least two minutes in Stage (II) after or during the addition of additional isocyanate.
Claim 8
Dependent Claim
70 words
The method of claim 4, wherein a diisocyanate is used in Stage (I) in an amount up to 3 gram-equivalents of --NCO groups per gram-equivalent of ##STR18## group present in the silane and the product obtained from Stage (I) is heated to a temperature in the range of from 110° C. to 200° C. for at least two minutes in Stage (II) after or during the addition of additional isocyanate.
Claim 9
Dependent Claim
19 words
The silicon compounds obtained in claim 2, wherein the temperature in (II) is from 120° C. to 170° C.
Claim 10
Dependent Claim
19 words
The silicon compounds obtained in claim 3, wherein the temperature in (II) is from 120° C. to 170° C.
Claim 11
Dependent Claim
16 words
The method of claim 5, wherein the temperature in (II) is from 120° to 170° C.
Claim 12
Dependent Claim
16 words
The method of claim 6, wherein the temperature in (II) is from 120° to 170° C.
Claim 13
Dependent Claim
14 words
The silicon compounds obtained in claim 1, wherein the diisocyanate is an aliphatic diisocyanate.
Claim 14
Dependent Claim
14 words
The silicon compounds obtained in claim 3, wherein the diisocyanate is an aliphatic diisocyanate.
Claim 15
Dependent Claim
12 words
The method of claim 4, wherein the diisocyanate is an aliphatic diisocyanate.
Claim 16
Dependent Claim
12 words
The method of claim 6, wherein the diisocyanate is an aliphatic diisocyanate.
References Cited (Backward Citations)
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US4046794A
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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) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |