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US 5,401,788 AGranted
Organic phosphorus compounds and flame-retarded resin compositions containing the same
AssigneeDaihachi Chemical Industry Co., Ltd.
InventorsNoriaki Tokuyasu, Tatsushi Ono, Katsumi Kameda
Life of this patent
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Abstract
Organic phosphorus compounds of the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are, the same or different, a C.sub.1-8 straight chain or branched chain alkyl group, an optionally substituted C.sub.6-12 aryl group; and A represents a bond, a lower alkylene group or --(OCH.sub.2 CH.sub.2).sub.n -- group, (n is an integer of 1 to 5), which are useful as flame-retardants.
Claims11
An organic phosphorus compound of the formula (I):
- ##STR10## wherein R.sub.1 and R.sub.2 are, the same or different, a C.sub.1-8 straight chain or branched chain alkyl group, or an optionally substituted C.sub.6-12 aryl group;
- A represents a bond, a lower alkylene group or --(OCH.sub.2 CH.sub.2).sub.n -- group;
- and n is an integer of 1 to 5.
Dependencies are inferred from the claim text.