Claims
- 1. A process for imparting flame-retardant character to a cellulosic textile comprising:
- (a) impregnating the cellulosic textile with an approximately 1:1 molar mixture of octakis(ureidomethyl)diphosphonium sulfate and octakis(hydroxymethyl)diphosphonium sulfate in water;
- (b) squeezing the impregnated textile to about 100% wet pick-up;
- (c) curing the impregnated textile for about 10 minutes at about 100.degree. C.; and
- (d) rinsing the cured cellulosic textile in hot water to remove the unreacted chemicals.
- 2. A process for imparting flame-retardant character to a cellulosic textile, comprising:
- (a) impregnating the cellulosic textile with an approximately 4:1 molar mixture of urea and octakis(hydroxymethyl)diphosphonium sulfate in water;
- (b) squeezing the impregnated cellulosic textile to about a 100% wet pick-up;
- (c) curing the impregnated cellulosic textile for about 30 minutes at about 100.degree. C.; and
- (d) rinsing the cured cellulosic textile in hot water to remove the unreacted chemicals.
Parent Case Info
This is a division of application Ser. No. 27,696 filed Apr. 6, 1979.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3644083 |
Stockel et al. |
Feb 1972 |
|
3734684 |
Donaldson et al. |
May 1973 |
|
3868269 |
Daigle et al. |
Feb 1975 |
|
Non-Patent Literature Citations (1)
Entry |
Pepperman, Armand B., Jr. et al, J. Org. Chem. 41, pp. 675-678, (1976). |
Divisions (1)
|
Number |
Date |
Country |
Parent |
27696 |
Apr 1979 |
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