CARPET BACKING COMPOSITION
A carpet backing composition with increased frothablity and froth collapse which may include a binding amount of a polymeric binder, a filler, a thickener, and a foaming surfactant which includes at least one anionic surfactant selected from: linear and/or branched alkyl sulfates having an average 8 to 10 carbon atoms in the alkyl moiety, and linear and/or branched C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety.
1 . A carpet backing composition, comprising:
a binding amount of a polymeric binder;
a filler; and
a foaming surfactant that increases foaming and decreases foam stability of the carpet backing composition, which includes an anionic surfactant selected from the group consisting of: linear alkyl sulfates having an average 8 to 10 carbon atoms in the alkyl moiety, branched alkyl sulfates having an average 8 to 10 carbon atoms in the alkyl moiety, linear C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety, and branched C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety.
2 . The composition of claim 1 , where the foaming surfactant consists essentially of the anionic surfactant selected from the group consisting of: linear alkyl sulfates having an average 8 to 10 carbon atoms in the alkyl moiety, branched alkyl sulfates having an average 8 to 10 carbon atoms in the alkyl moiety, linear C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety, and branched C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety.
3 . The composition of claim 1 , where the foaming surfactant is about 0.05 to about 3 weight parts, on a dry basis, per 100 dry weight parts of the polymeric binder.
4 . The composition of claim 1 , where the foaming surfactant is about 0.1 to about 1.5 weight parts, on a dry basis, per 100 dry weight parts of the polymeric binder.
5 . The composition of claim 1 , where the anionic surfactant is selected from the group consisting of: linear C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety, and branched C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety.
6 . The composition of claim 1 , where the filler is about 100 to about 600 dry weight parts per 100 dry weight parts of the polymeric binder.
7 . The composition of claim 1 , where the polymeric binder includes a synthetic latex.
8 . The composition of claim 7 , where the synthetic latex includes copolymerized styrene and butadiene.
9 . The composition of claim 1 , where the polymeric binder has a Tg from about −20° C. to about 30° C.
10 . The composition of claim 1 , where the polymeric binder has a binder solids content of about 40 weight percent to about 75 weight percent based on a total weight of the polymeric binder.
11 . The composition of claim 1 , where the carpet backing composition has 11% to 67% by weight of the polymeric binder and 33% to 89% by weight of the filler, based on a total weight of the polymeric binder and the filler.
12 . The composition of claim 1 , where the carpet backing composition has a viscosity of about 2,000 cP to about 75,000 cP.
13 . A carpet product prepared with the carpet backing composition of claim 1 .
14 . The carpet product of claim 13 , where the carpet backing composition of claim 1 is used as a pre-coat binder.
15 . The carpet product of claim 13 , where the carpet backing composition of claim 1 is used as a secondary backing binder.
16 . The carpet product of claim 13 , where the carpet backing composition is applied in an amount from about 10 ounces per square yard to about 40 ounces per square yard, dry basis, to the carpet product.
17 . A method for producing a carpet product, comprising:
using the carpet backing composition of claim 1 to produce the carpet product.
18 . The method of claim 17 , including making the carpet backing composition by:
mixing a binding amount of a polymeric binder with a filler and a foaming surfactant that includes at least one anionic surfactant selected from the group consisting of: linear alkyl sulfates having an average 8 to 10 carbon atoms in the alkyl moiety, branched alkyl sulfates having an average 8 to 10 carbon atoms in the alkyl moiety, linear C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety, and branched C 8 to C 10 alkyl sulfonates having an average 8 to 10 carbon atoms in the alkyl moiety.
19 . The method of claim 18 , including blending a gas into the carpet backing composition to froth the carpet backing composition.
20 . The method of claim 19 , including applying the froth of the carpet backing composition to a rear of a carpet backing to embed yarn of the carpet backing in the carpet backing composition; and
drying the resultant carpet construction.