CARPET BACKING COMPOSITIONS
The present disclosure provides embodiments of aqueous compositions comprising a dispersed polymer for preparing a carpet backing, methods for producing a carpet product, and methods for preparing a polymer-backed carpet. The aqueous composition can be prepared by polymerizing monomers including at least 50 percent by weight of at least one compound selected from the group consisting of alkyl acrylates and alkyl methacrylates having at least 4 carbon atoms in the alkyl. at least 30 percent by weight of at least one compound selected from the group consisting of styrene and alkyl acrylates and alkyl methacrylates having not more than 3 carbon atoms in the alkyl, less than 3 percent by weight of a hydroxyalkyl acrylate, and a copolymerizable acid in an amount up to 5 percent by weight.
1 . A carpet backing composition, comprising:
an aqueous composition comprising a dispersed polymer, where the polymer is polymerized from monomers comprising:
at least 50 percent by weight, based on total polymer weight, of at least one compound selected from the group consisting of alkyl acrylates and alkyl methacrylates having at least 4 carbon atoms in the alkyl;
at least 30 percent by weight, based on total polymer weight, of at least one compound selected from the group consisting of styrene and alkyl acrylates and alkyl methacrylates having not more than 3 carbon atoms in the alkyl;
0.5 to 3 percent by weight, based on total polymer weight, of a hydroxyalkyl acrylate; and
methacrylic acid in an amount of 1 to 5 percent by weight, based on total polymer weight.
2 . The composition of claim 1 , where the carpet backing composition contains recycled fillers.
3 . The composition of claim 2 , where the recycled fillers in the composition are in a range of from 0 to about 400 dry parts per 100 parts of polymer solids.
4 . The composition of claim 1 , where the composition includes fillers in a range of from 50 to about 800 dry parts per 100 parts of polymer solids.
5 . (canceled)
6 . The composition of claim 1 , where the polymer is polymerized from monomers comprising:
butyl acrylate in a range of about 55 to about 60 percent by weight, based on total polymer weight;
styrene in a range of about 35 to about 40 percent by weight, based on total polymer weight;
about 3 percent by weight, based on total polymer weight, of methacrylic acid; and
about 1 percent by weight, based on total polymer weight, of hydroxyethyl methacrylate.
7 .- 9 . (canceled)
10 . A method for preparing a polymer-backed carpet, comprising:
forming an aqueous composition comprising a dispersed polymer, where the dispersed polymer is polymerized from monomers comprising:
at least 50 percent by weight of at least one compound selected from the group consisting of alkyl acrylates and alkyl methacrylates whose homopolymers have a T g less than 10° C.;
at least 30 percent by weight of at least one compound selected from the group consisting of styrene and alkyl acrylates and alkyl methacrylates whose homopolymers have a T g greater than or equal to 10° C.;
0.5 to 3 percent by weight of a hydroxyalkyl acrylate; and
methacrylic acid in an amount of 1 to 5 percent by weight; and
applying the aqueous composition comprising the dispersed polymer to a carpet.
11 . The method of claim 10 , where forming an aqueous composition includes frothing the aqueous composition with air.
12 . The composition of claim 1 , where styrene is selected from the group consisting of styrene and alkyl acrylates and alkyl methacrylates having not more than 3 carbon atoms in the alkyl.
13 . The composition of claim 1 , where butyl acrylate is selected from the group consisting of alkyl acrylates and alkyl methacrylates having at least 4 carbon atoms in the alkyl.
14 . The composition of claim 1 , where the hydroxyalkyl acrylate is hydroxyethyl acrylate.
15 . The composition of claim 1 , where the hydroxyalkyl acrylate is hydroxyethyl methacrylate.
16 . A spill resistant carpet backing prepared using the aqueous composition comprising the dispersed polymer of claim 1 .
17 . The spill resistant carpet backing of claim 16 , where the spill resistant carpet backing is a carpet layer selected from the group consisting of a precoat, a laminate layer, and a foam layer.