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:
Nov. 14, 2000
Filed:
Jan. 19, 1998
James C Gill, Macedonia, OH (US);
James L Dever, Medina, OH (US);
Ferro Corporation, Cleveland, OH (US);
Abstract
A flame retardant additive comprising a brominated copolymer, wherein the copolymer is a copolymer of styrene and an acrylate or methacrylate monomer defined by the formula ##STR1## where R.sub.1 is a methyl group or hydrogen and R.sub.2 is an organic group having between one and about 18 carbon atoms. A method for imparting flame retardancy to a thermoplastic material without deleteriously impacting the color thereof comprises the step of adding a brominated copolymer to the thermoplastic material, wherein the copolymer is a copolymer of styrene and an acrylate or methacrylate monomer defined by the formula ##STR2## where R.sub.1 is a methyl group or hydrogen and R.sub.2 is an organic group having between one and about 18 carbon atoms. The present invention also includes a brominated copolymer of styrene and an acrylate or methacrylate monomer.