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US5185200A
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Aqueous polyisocyanate dispersions with reduced isocyanate contents and their use for the production of fiberglass mats
Assignee: Bayer Corp
•
Filing: 1991-03-28
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Granted: 1993-02-09
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Expires: 2011-03-28
Abstract
Abstract The present invention is directed to an aqueous polyisocyanate dispersion which has an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) does not exceed 0.95:1.0. The present invention is also directed to a process for the preparation of a fibrous mat by treating fibers with the dispersed polyisocyanate before the isocyanate content of the dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate. Finally, the present invention is directed to the fibrous mats obtained in accordance with this process.
Inventors
- 👤 Robin E. Tirpak
- 👤 Peter H. Markusch
- 👤 Ashok M. Sarpeshkar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:33
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/25; C03C25/26; C03C25/32; C03C25/326; C08G18/08; C08G18/0804; C08G18/3225; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5036; C08G18/70; C08G18/703; C08G18/705; C08G18/706; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8038; C08G18/8041; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T442/00; Y10T442/20; Y10T442/2484; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
162 words
An aqueous polyisocyanate dispersion which has an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by a process which comprises a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0.
Claim 2
Dependent Claim
162 words
An aqueous polyisocyanate dispersion which has an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by a process which comprises a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0.
Claim 3
Dependent Claim
27 words
The aqueous polyisocyanate dispersion of claim 1 wherein said dispersed polyisocyanate is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 4
Dependent Claim
63 words
The aqueous polyisocyanate dispersion of claim 1 wherein said primary or secondary monoamine corresponds to the formula ##STR3## wherein R 1 represents hydrogen or an alkyl, cycloalkyl, araliphatic or aromatic group having up to 15 carbon atoms, R 2 is an optionally branched alkylene group containing 1 to 12 carbon atoms, m represents 0 or 1, n represents 1 or 2 and m+n=2.
Claim 5
Dependent Claim
35 words
The aqueous polyisocyanate dispersion of claim 3 wherein R 1 is an alkyl group containing 1 to 6 carbon atoms and R 2 is an optionally branched alkylene group containing 1 to 4 carbon atoms.
Claim 6
Dependent Claim
187 words
An aqueous polyisocyanate dispersion which has a functionality of at least 2 and an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by a process which comprises a) dispersing in water an aromatic polyisocyanate which has an isocyanate content of at least 12% by weight and is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group and b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0.
Claim 7
Dependent Claim
187 words
An aqueous polyisocyanate dispersion which has a functionality of at least 2 and an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by a process which comprises a) dispersing in water an aromatic polyisocyanate which has an isocyanate content of at least 12% by weight and is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group and b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0.
Claim 8
Dependent Claim
63 words
The aqueous polyisocyanate dispersion of claim 5 wherein said primary or secondary monoamine corresponds to the formula ##STR4## wherein R 1 represents hydrogen or an alkyl, cycloalkyl, araliphatic or aromatic group having up to 15 carbon atoms, R 2 is an optionally branched alkylene group containing 1 to 12 carbon atoms, m represents 0 or 1, n represents 1 or 2 and m+n=2.
Claim 9
Dependent Claim
35 words
The aqueous polyisocyanate dispersion of claim 6 wherein R 1 is an alkyl group containing 1 to 6 carbon atoms and R 2 is an optionally branched alkylene group containing 1 to 4 carbon atoms.
Claim 10
Dependent Claim
172 words
A process for the preparation of a fibrous mat which comprises a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fibers with said dispersed polyisocyanate before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 11
Dependent Claim
172 words
A process for the preparation of a fibrous mat which comprises a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fibers with said dispersed polyisocyanate before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 12
Dependent Claim
30 words
The process of claim 8 wherein said dispersed polyisocyanate is present in an amount of 1 to 20% by weight of polyisocyanate solids, based on the weight of the fibers.
Claim 13
Dependent Claim
25 words
The process of claim 8 wherein said dispersed polyisocyanate is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 14
Dependent Claim
61 words
The process of claim 8 wherein said primary or secondary monoamine corresponds to the formula ##STR5## wherein R 1 represents hydrogen or an alkyl, cycloalkyl, araliphatic or aromatic group having up to 15 carbon atoms, R 2 is an optionally branched alkylene group containing 1 to 12 carbon atoms, m represents 0 or 1, n represents 1 or 2 and m+n=2.
Claim 15
Dependent Claim
33 words
The process of claim 11 wherein R 1 is an alkyl group containing 1 to 6 carbon atoms and R 2 is an optionally branched alkylene group containing 1 to 4 carbon atoms.
Claim 16
Dependent Claim
10 words
The process of claim 8 wherein said fibers comprise fiberglass.
Claim 17
Dependent Claim
215 words
A process for the preparation of a fiberglass mat which comprises a) dispersing in water an aromatic polyisocyanate which has a functionality of at least 2 and an isocyanate content of at least 12% by weight and is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fiberglass with said dispersed polyisocyanate in an amount of 1 to 20% by weight of polyisocyanate solids, based on the weight of fiberglass, before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 18
Dependent Claim
215 words
A process for the preparation of a fiberglass mat which comprises a) dispersing in water an aromatic polyisocyanate which has a functionality of at least 2 and an isocyanate content of at least 12% by weight and is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fiberglass with said dispersed polyisocyanate in an amount of 1 to 20% by weight of polyisocyanate solids, based on the weight of fiberglass, before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 19
Dependent Claim
61 words
The process of claim 14 wherein said primary or secondary monoamine corresponds to the formula ##STR6## wherein R 1 represents hydrogen or an alkyl, cycloalkyl, araliphatic or aromatic group having up to 15 carbon atoms, R 2 is an optionally branched alkylene group containing 1 to 12 carbon atoms, m represents 0 or 1, n represents 1 or 2 and m+n=2.
Claim 20
Dependent Claim
33 words
The process of claim 15 wherein R 1 is an alkyl group containing 1 to 6 carbon atoms and R 2 is an optionally branched alkylene group containing 1 to 4 carbon atoms.
Claim 21
Dependent Claim
172 words
A fibrous mat which is prepared by a process which comprises a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fibers with said dispersed polyisocyanate before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 22
Dependent Claim
172 words
A fibrous mat which is prepared by a process which comprises a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fibers with said dispersed polyisocyanate before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 23
Dependent Claim
31 words
The fibrous mat of claim 17 wherein said dispersed polyisocyanate is present in an amount of 1 to 20% by weight of polyisocyanate solids, based on the weight of the fibers.
Claim 24
Dependent Claim
26 words
The fibrous mat of claim 17 wherein said dispersed polyisocyanate is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group.
Claim 25
Dependent Claim
62 words
The fibrous mat of claim 17 wherein said primary or secondary monoamine corresponds to the formula ##STR7## wherein R 1 represents hydrogen or an alkyl, cycloalkyl, araliphatic or aromatic group having up to 15 carbon atoms, R 2 is an optionally branched alkylene group containing 1 to 12 carbon atoms, m represents 0 or 1, n represents 1 or 2 and m+n=2.
Claim 26
Dependent Claim
34 words
The fibrous mat of claim 20 wherein R 1 is an alkyl group containing 1 to 6 carbon atoms and R 2 is an optionally branched alkylene group containing 1 to 4 carbon atoms.
Claim 27
Dependent Claim
11 words
The fibrous mat of claims 20 wherein said fibers comprise fiberglass.
Claim 28
Dependent Claim
215 words
A fiberglass mat which is prepared by a process which comprises a) dispersing in water an aromatic polyisocyanate which has a functionality of at least 2 and an isocyanate content of at least 12% by weight and is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fiberglass with said dispersed polyisocyanate in an amount of 1 to 20% by weight of polyisocyanate solids, based on the weight of fiberglass, before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 29
Dependent Claim
215 words
A fiberglass mat which is prepared by a process which comprises a) dispersing in water an aromatic polyisocyanate which has a functionality of at least 2 and an isocyanate content of at least 12% by weight and is rendered hydrophilic by reaction with a compound containing a lateral or terminal nonionic hydrophilic group, b) reacting the dispersed polyisocyanate with i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0, wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) to isocyanate groups does not exceed 0.95:1.0 and c) subsequently treating fiberglass with said dispersed polyisocyanate in an amount of 1 to 20% by weight of polyisocyanate solids, based on the weight of fiberglass, before the isocyanate content of said dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate.
Claim 30
Dependent Claim
62 words
The fiberglass mat of claim 23 wherein said primary or secondary monoamine corresponds to the formula ##STR8## wherein R 1 represents hydrogen or an alkyl, cycloalkyl, araliphatic or aromatic group having up to 15 carbon atoms, R 2 is an optionally branched alkylene group containing 1 to 12 carbon atoms, m represents 0 or 1, n represents 1 or 2 and m+n=2.
Claim 31
Dependent Claim
34 words
The fiberglass mat of claim 24 wherein R 1 is an alkyl group containing 1 to 6 carbon atoms and R 2 is an optionally branched alkylene group containing 1 to 4 carbon atoms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-02-09 | 1996-08-10 | 1997-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-09 | 2000-08-10 | 2001-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-09 | 2004-08-10 | 2005-02-09 | $7700.00 | Window Closed / Lapsed |