Claims
- 1. A composition physically stable for one month or more upon storage, consisting essentially of:
- at least one unmasked polyisocyanate in the form of an aqueous emulsion whose mean size is between about 0.1 and about 10 micrometers; and
- at least one polyhydroxylated polymer in the form of an aqueous dispersion whose mean size is between about 10 and about 200 nanometers,
- wherein the quantity of polyhydroxylated polymer(s) in the mixture in mass per cent is at least equal to 35-0.75 R or does not exceed 45-2 R, R being equal to the ratio of the mean size (d.sub.50) of the emulsion to that of the dispersion of polyhydroxylated polymer.
- 2. The composition of claim 1, wherein the mean size of the aqueous emulsion is smaller than about 2 and larger than about 0.2 micrometers.
- 3. The composition of claim 1, wherein the polyhydroxylated polymer(s) is a polyol.
- 4. The composition of claim 1, wherein the quantity of polyhydroxylated polymer(s) in the mixture is at least equal to about 40-0.75 R or does not exceed about 40-2 R.
- 5. The composition of claim 4, wherein the quantity of polyhydroxylated polymer(s) in the mixture is at least equal to about 45-0.75 R or does not exceed about 35-2 R.
- 6. The composition according to claim 1, wherein said unmasked polyisocyanate(s) has(have) a polydispersity index defined as (d.sub.90 -d.sub.10)/d.sub.50 not exceeding 2.
- 7. The composition according to claim 6, wherein said unmasked polyisocyanate(s) has(have) a polydispersity index defined as (d.sub.90 -d.sub.10)/d.sub.50 equal to 1.
- 8. The composition according to claim 1, wherein said polyhydroxylated polymer(s) has(have) a polydispersity index defined as (d.sub.90 -d.sub.10)/d.sub.50 not exceeding 2.
- 9. The composition according to claim 7, wherein said polyhydroxylated polymer(s) has(have) a polydispersity index equal to 1.
- 10. The composition according to claim 1, wherein the water content of the said composition is at least equal to about one third of the mass of the composition.
- 11. The composition according to claim 10, wherein the water content of the said composition is at least about 2/5.
- 12. The composition according to claim 1, wherein said polyisocyanate has(have) one or more isocyanuric rings.
- 13. The composition according to claim 1, wherein said polyisocyanate is chosen from those in which the nitrogen of at least one of the isocyanate functional groups is attached to a carbon with sp.sup.3 hybridization carrying one or two hydrogen atom(s).
- 14. The composition according to claim 3, wherein the polyol is a nanolatex.
Priority Claims (1)
Number |
Date |
Country |
Kind |
95 02000 |
Feb 1995 |
FRX |
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Parent Case Info
This application is a divisional of U.S. application Ser. No. 09/099,968 filed on Jun. 19, 1998, which is a divisional of U.S. application Ser. No. 09/017,018 filed on Feb. 02, 1998, now U.S. Pat. No. 5,835,807, which is a divisional of U.S. application Ser. No. 08/600,355, filed on Dec. 02, 1996, now U.S. Pat. No. 5,739,206.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5739206 |
Langlois et al. |
Apr 1998 |
|
5853807 |
Langlois et al. |
Dec 1998 |
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Divisions (3)
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Number |
Date |
Country |
Parent |
099968 |
Jun 1998 |
|
Parent |
017018 |
Feb 1998 |
|
Parent |
600355 |
Dec 1996 |
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