Plastics patents: Additives

✍ Scribed by J. S. Robinson

• Publisher: John Wiley and Sons
• Year: 1984
• Tongue: English
• Weight: 222 KB
• Volume: 4
• Category: Article
• ISSN: 0730-6679
• DOI: 10.1002/adv.1984.060040101

✦ Synopsis

FLAME RETARDANTS

U.S. Patent 4,430,485; halogen-free aromatic copolyester-carbonate resins contain a diphenol and a thiodiphenol. U.S. Patent 4,430,470; alumina trihydrate and a methyl hydrogen polysiloxane are the flame retardant in polyethylene. U.S. Patent 4,430,467; a self-extinguishing polypropylene contains a halogenated aliphatic bisimide and 2,3-dimethyl-2,3-diphenylbutane. U.S. Patent 4,430,466; benzothiazyl sulfenamides act as scorch-retardants for mercaptosilanecoupled silica-filled rubbers. U.S. Patent 4,427,806; a halogen-free epoxy resin contains aluminum hydroxide. U.S. Patent 4,425,447; tribromocumene imparts flame retardant properties to polyurethane.