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US 5,478,641 AGranted
Latex containing copolymers having a plurality of activatable functional ester groups therein
AssigneeGenCorp Inc.
InventorsWalter A. Schmeing, Woodrow W. White
Life of this patent
Estimating the term…
Abstract
An aqueous latex contains a functionalized copolymer prepared by emulsion polymerization. The copolymer can be applied to textile nonwoven materials and to various cellulosic substrates, and when utilized as a binder imparts enhanced properties thereto such as wet tensile strength, low temperature cure rates, and the like. The monomers generally forming the copolymer include at least two functional type monomers, one of which contains an activatable ester group, and at least one latex forming monomer.
Claims16
A cellulosic material, comprising:
- the cellulosic material, said cellulosic material containing a cured emulsion copolymer in the form of a solid, the copolymer made from an effective amount of (1) at least one latex forming monomer and (2) at least one functional type monomer having an activatable ester group which enables said copolymer to be crosslinked and a vinyl group with (3) at least one other functional type monomer, wherein said latex forming monomer is a conjugated diene, or said conjugated diene and at least one different conjugated diene comonomer having from 4 to 8 carbon atoms, or a conjugated diene and a vinyl substituted aromatic comonomer having from 8 to 12 carbon atoms, or a vinyl ester having a 1 to 8 carbon atom alkyl ester portion, or said vinyl ester and at least one ester of unsaturated mono or dicarboxylic acid comonomer having from 2 to 12 carbon atoms, or an ethylene monomer, or said ethylene and a vinyl chloride comonomer, or ethylene and a vinyl ester comonomer having from a 1 to 8 carbon atom alkyl ester portion, and wherein said other type functional monomer is an acrylamide or a 1 to 2 carbon atom alkyl derivative thereof, a methacrylamide or a 1 to 2 carbon atom alkyl derivative thereof, or combinations thereof.
A non-woven textile, comprising:
- the non-woven textile, said non-woven textile containing a cured emulsion copolymer in the form of a solid, the copolymer made from an effective amount of (1) at least one latex forming monomer and (2) at least one functional type monomer having an activatable ester group which enables said copolymer to be crosslinked and a vinyl group with (3) at least one other functional type monomer, wherein said latex forming monomer is a conjugated diene, or said conjugated diene and at least one different conjugated diene comonomer having from 4 to 8 carbon atoms, or a conjugated diene and a vinyl substituted aromatic comonomer having from 8 to 12 carbon atoms, or a vinyl ester having a 1 to 8 carbon atom alkyl ester portion, or said vinyl ester and at least one ester of an unsaturated mono or dicarboxylic acid comonomer having from 2 to 12 carbon atoms, or an ethylene monomer, or said ethylene and a vinyl chloride comonomer, or ethylene and a vinyl ester comonomer having from a 1 to 8 carbon atom alkyl ester portion and wherein said other type functional monomer is an acrylamide or a 1 to 2 carbon atom alkyl derivative thereof, a methacrylamide or a 1 to 2 carbon atom alkyl derivative thereof, or combinations thereof.
A non-woven textile substrate or a cellulosic substrate containing a cured emulsion copolymer of a latex, comprising:
- the non-woven textile substrate or the cellulosic substrate, the cured emulsion copolymer of a latex applied to said non-woven textile or said cellulosic substrate, said cured emulsion copolymer in the form of a solid, the emulsion copolymer made by polymerizing (1) at least one latex forming monomer and (2) at least one functional type monomer having an activatable ester group which enables said copolymer to be crosslinked and a vinyl group with (3) at least one other functional type monomer, wherein said latex forming monomer is a conjugated diene, or said conjugated diene and at least one different conjugated diene comonomer having from 4 to 8 carbon atoms, or a conjugated diene and a vinyl substituted aromatic comonomer having from 8 to 12 carbon atoms, or a vinyl ester having a 1 to 8 carbon atom alkyl ester portion, or said vinyl ester and at least one ester of am unsaturated mono or dicarboxylic acid comonomer having from 2 to 12 carbon atoms, or an ethylene monomer, or said ethylene and a vinyl chloride comonomer, or ethylene and a vinyl ester comonomer having from a 1 to 8 carbon atom alkyl ester portion, wherein the amount of said functional monomers is from 0.5 percent to about 15 percent by weight based upon the weight of said total monomers,
- wherein the amount of said latex forming monomer is from about 85 percent to about 99.5 percent by weight based upon the weight of said total monomers,
- wherein the pH of said latex is from about 2.0 to about 7.0,
- and wherein said other type functional monomer is an acrylamide or a 1 to 2 carbon atom alkyl derivative thereof;
- a methacrylamide or a 1 to 2 carbon atom alkyl derivative thereof;
- or combinations thereof.
3 more elements
A coated cellulosic material containing a cured emulsion copolymer of a latex, comprising:
- the cellulosic material, the cured emulsion copolymer of a latex coating said cellulosic material, said cured emulsion copolymer being in the form of a solid, the emulsion copolymer made by polymerizing (1) at least one latex forming monomer and (2) at least one functional type monomer having an activatable ester group which enables said copolymer to be crosslinked and a vinyl group with (3) at least one other functional type monomer, wherein said latex forming monomer is a conjugated diene, or said conjugated diene and at least one different conjugated diene comonomer having from 4 to 8 carbon atoms, or a conjugated diene and a vinyl substituted aromatic comonomer having from 8 to 12 carbon atoms, or a vinyl ester having a 1 to 8 carbon atom alkyl ester portion, or said vinyl ester and at least one ester of an unsaturated mono or dicarboxylic acid comonomer having from 2 to 12 carbon atoms, or an ethylene monomer, or said ethylene and a vinyl chloride comonomer, or ethylene and a vinyl ester comonomer having from a 1 to 8 carbon atom alkyl ester portion, wherein the amount of said functional monomers is from 0.5 percent to about 15 percent by weight based upon the weight of said total monomers,
- wherein the amount of said latex forming monomer is from about 85 percent to about 99.5 percent by weight based upon the weight of said total monomers,
- wherein the pH of said latex is from about 2.0 to about 7.0,
- and wherein said other type functional monomer is an acrylamide or a 1 to 2 carbon atom alkyl derivative thereof;
- a methacrylamide or a 1 to 2 carbon atom alkyl derivative thereof;
- or combinations thereof.
3 more elements
Dependencies are inferred from the claim text.