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:
May. 05, 1998
Filed:
Nov. 05, 1996
Applicant:
Inventors:
Assignee:
Atohaas Holding C.V., Haarlem, NL;
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ;
U.S. Cl.
CPC ...
524140 ; 524706 ; 524710 ; 524712 ; 526193 ; 526233 ;
Abstract
The invention relates to compositions for flame-retardant cast panels made of (meth)acrylic polymers. The composition comprises at least one (meth)acrylic ester monomer, (meth)acrylic acid and at least one phosphorus compound which is anhydrous and is chosen from phosphoric acids, phosphoric acid esters or their mixtures, optionally in combination with an optionally halogenated neutral phosphoric ester. The amount of (meth)acrylic acid and of phosphorus compound, by weight with respect to the total mixture constituting the composition, is such that the flame-retardancy coefficient FRC: ##EQU1## is greater than 0.95.