The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1981
Filed:
Apr. 19, 1978
Robert D Norris, Cranbury, NJ (US);
E Robert Fretz, Jr, Cranbury, NJ (US);
Harry H Beacham, Langhorne, PA (US);
FMC Corporation, Philadelphia, PA (US);
Abstract
This invention relates to flame-retardant phosphorus-containing materials, particularly suitable for use as an additive, having little or no plasticizing effect, in flammable organic plastics. One such material may be made by reacting methallyl chloride with phenol or phenol-isopropylphenol blend and then phosphorylating. Another such material may be made by halogenating isopropyl groups of an isopropylphenyl phosphate blend and then dehydrohalogenating to make an isopropenyl-containing product, which may be oligomerized as by heating with a catalyst. The isopropenyl-containing product may also be employed as a flame-retarding comonomer.