Back to results
US 4,058,568 AGranted
Hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-diol phenylsulfones
AssigneeUniroyal, Inc.
InventorsJulian R. Little, Walter Nudenberg, Yong S. Rim
Life of this patent
Estimating the term…
Abstract
A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert its function.
Claims2
A compound having the formula:
- ##STR94## wherein R.sub.24 is lower alkyl, phenyl, chlorophenyl, or a halogen substituted lower alkyl and X is halogen.
Dependencies are inferred from the claim text.