Carpets, latex backcoatings

Before proceeding further with carpet laminating, a review of carpet terminology would be useful, since physical properties imparted by the SB latex backcoating relate directly to its construction. Figure 9-1 illustrates a typical cut pile carpet and the physicals associated with it A level loop carpet would appear the same but the tops of the tufts would not be cut Physicals and terminology for a level loop carpet would be the same as for cut pile. 

Uses Nitrile latex for adhesives, carpet backcoating, paper coatings and saturation, pigment binding, textile coatings Features Exhibits fast penetration... 

Uses AntioxidanL stabilizer for latex foams for carpet backcoatings, and for peroxide crosslinked PE (e.g., for cable coverings)... 

Chem. Descrip. Carboxyiated styrene-butadiene latex Uses Binder for nonwovens, carpet and needle-punch backcoatings, paper saturation... 

Chem. Descrip. Carboxyiated styrene-butadiene latex Uses Binder for carpet and needle-punch backcoatings, fibers Features Med. hand good tensile str., adhesion Properties 0.20 p particle size dens. 8.40 Ib/gal vise. 300 cps pH 8.5 anionic 53% solids S/B ratio 62/38 Rovene 4470 [Mallard Creek Polymers]... 

Uses Antioxidant, antiozonant for rubbers, latex, crosslinked PE, lubricants stabilizer polymerization inhibitor staining antioxidant for stabilization of latex foams for carpet backcoating improves scorch resist. 

BHT Bisphenol A, polybutylated Diphenylamine-acetone Distearyl thiodipropionate Nickel dibutyidithiocarbamate Zinc diisobutyidithiocarbamate Zinc 2-mercaptotoluimidazole antioxidant, SR rubber food-contact Cyclohexyl-N -phenyl-p-phenylenediamine antioxidant, stabilized polymers Perchloropentacyclodecane antioxidant, staining carpet backcoating latex foams... 

This paper reports on the synthesis, characterisation, and applications of novel flame retardant dibromostyrene-based latexes. They are copolymers of dibromostyrene with butadiene, alkyl acrylates and methacrylates, vinyl acetate, styrene and unsaturated carboxylic acids, which form a wide variety of flame retardant latexes via an emulsion polymerisation technique. Choice of monomer or monomer blend is based upon the final glass transition temperature of the copolymer desired. Other criteria include desired physical properties and chemical resistance. Dibromostyrene-based butadiene and acryUc latexes are shown to possess the desired physical properties for use in coatings, adhesives and sealants, and the bromine content of the latexes has enabled the material to pass six different flammability requirements for the end uses such as textile backcoating, latex-based paint, contact adhesive, latex sealant, nonwoven binder, and carpet backing. 18 refs. 

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