Claims
- 1. A process for producing a condensed resin dispersion, which comprises subjecting an aldehyde and a compound having two sites reactive with the aldehyde, or their precondensate, to a condensation reaction in a dispersion medium consisting essentially of water and/or an organic solvent, to precipitate a condensed aldehyde resin as fine condensed resin particles with a particle size of from 0.01 to 5 .mu.m in said dispersion medium, then adding an active hydrogen-containing compound having at least two active hydrogen-containing groups reactive with isocyanate groups, and then removing the water and/or organic solvent by vaporization.
- 2. The process according to claim 1, wherein the removal of the water and/or the organic solvent is conducted by vaporization under heating and/or under reduced pressure.
- 3. The process according to claim 1, wherein the active hydrogen-containing compound has a boiling point or decomposition point higher than the boiling point of the water and/or the organic solvent used.
- 4. The process according to claim 1, wherein the active hydrogen-containing compound has from 2 to 8 hydroxyl groups and/or amino groups and has a molecular weight of from 100 to 10,000 per active hydrogen-containing group.
- 5. The process according to claim 4, wherein the active hydrogen-containing compound is a polyether polyol having from 2 to 8 hydroxyl groups and polyoxyalkylene chains and having a molecular weight of from 600 to 10,000 per hydroxyl group.
- 6. The process according to claim 1, wherein the dispersion medium consisting essentially of water and/or an organic solvent, contains a particle dispersion stabilizer.
- 7. The process according to claim 6, wherein the particle dispersion stabilizer is a surfactant.
- 8. The process according to claim 6, wherein the particle dispersion stabilizer is a polyisocyanate compound.
- 9. The process according to claim 6, wherein the particle dispersion stabilizer is a active hydrogen-containing compound.
- 10. The process according to claim 9, wherein the active hydrogen-containing compound has a bond formed by the reaction of an active hydrogen-containing group with an isocyanate group.
- 11. The process according to claim 10, wherein the bond formed by the reaction with the isocyanate group is a urethane bond or a urea bond.
- 12. The process according to claim 9, wherein the active hydrogen-containing compound is an active hydrogen-containing compound containing fine particles of polyurea, polyurethane or polyurethaneurea formed by the reaction of an active hydrogen-containing group with an isocyanate group.
- 13. The process according to claim 9, wherein the active hydrogen-containing compound is a polyether polyol having a hydroxyl value of not higher than 28.
Priority Claims (2)
Number |
Date |
Country |
Kind |
63-240740 |
Sep 1988 |
JPX |
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63-240741 |
Sep 1988 |
JPX |
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Parent Case Info
This application is a continuation application of parent application Ser. No. 07/413,584, filed Sep. 28, 1989, now U.S. Pat. No. 5,030,685 issued Jul. 9, 1991.
US Referenced Citations (10)
Foreign Referenced Citations (4)
Number |
Date |
Country |
2639254 |
Mar 1978 |
DEX |
2228804 |
Dec 1974 |
FRX |
2306226 |
Oct 1976 |
FRX |
2133412 |
Jul 1984 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Chemical Abstracts, vol. 89, No. 16, Oct. 16, 1978, p. 32, abstract No. 130358w, Columbus, OH, US; JP-A-53 54 298 Mitsubishi Gas Chemical Co., Inc.) May 17, 1978. |
Continuations (1)
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Number |
Date |
Country |
Parent |
413584 |
Sep 1989 |
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