Back to results
US 5,182,179 AGranted
Fiber binder
AssigneeRohm and Haas Company
InventorsCharles T. Arkens, Reginald T. Smart
Life of this patent
Estimating the term…
Abstract
This invention relates to improved textile fibers having deposited thereon a coagulable, multi-stage, latex binder. In addition, this invention relates to a method for improving the stiffness of textile materials by depositing thereon an acid-resistant, coagulable, multi-stage, latex binder wherein one stage enhances the stiffness of the textile fibers and another stage controls the coagulation temperature of the latex binder. The latex binder is particularly suitable for use in battery separators.
Claims6
A composition comprising:
- (a) textile fibers,
- (b) a stabilizing ionic surfactant,
- (c) a counterion to the stabilizing surfactant,
- (d) a nonionic surfactant and
- (e) a multi-stage, water-insoluble polymer, wherein said polymer comprises a first stage copolymer and a second stage copolymer, where said first stage copolymer is formed from at least one hydrophobic monomer and at least one polyfunctional monomer, and where the first stage copolymer is acid-resistant and has a glass transition temperature greater than about 80.degree. C. and where said second stage copolymer is acid-resistant and coagulable.
2 more elements
A method for improving the stiffness of textile fibers comprising:
- (a) admixing a stabilizing ionic surfactant, a counterion to the stabilizing surfactant, a nonionic surfactant and a multi-stage, water-insoluble polymer, wherein said polymer comprises a first stage copolymer and a second stage copolymer, where said first stage copolymer is formed from at least one hydrophobic monomer and at least one polyfunctional monomer, and where the first stage copolymer is acid-resistant and has a glass transition temperature greater than about 80.degree. C. and where said second stage copolymer is acid-resistant and coagulable;
- (b) depositing the admixture onto textile fibers;
- and
- (c) heating the textile fibers with the admixture deposited thereon, to a temperature above the cloud point of the nonionic surfactant and below the glass transition temperature of the first stage copolymer.
1 more element
Dependencies are inferred from the claim text.