Chemical softening composition for paper products
AssigneeHuntsman Petrochemical Corporation
InventorDuy Nguyen
Life of this patent
Estimating the term…
Abstract
A chemical softening composition includes a amide-substituted quaternary imidazolinium salt, a nonionic surfactant, and a polyhydroxy compound for use in treating cellulosic materials including papers, textiles and fabrics. The chemical softening composition can be applied to papermaking fibers during a papermaking process to provide a softened paper web and product possessed of sufficient tensile strength for its regular employment. A chemical softening composition according to the invention can also be applied to fabric to soften the fabric, provide easier handling of the fabric, and also reduce the tendency of the fabric to generate and store static electricity.
Claims20
1) A process for producing a soft, durable paper web comprising:
- a) providing an aqueous dispersion having papermaking fibers and water;
- b) disposing the aqueous dispersion on a surface;
- c) removing at least a first portion of water from the aqueous dispersion;
- d) applying a composition to the papermaking fibers, wherein the composition comprises:
- i) an amide-substituted quaternary imidazolinium salt present in the amount from about 0.25% to about 20.00% by weight based upon the total weight of the composition;
- ii) a nonionic surfactant;
- and
- iii) a polyhydroxy compound having an average molecular weight which is any molecular weight in the range of 92 to 4000,
- wherein the amide-substituted quaternary imidazolinium salt comprises a cation having the structure:
- in which R1 in each occurrence is independently selected from the group consisting of:
- hydrogen or a hydrocarbyl group comprising any number of carbon atoms between 8 to 22 and wherein R2 is selected from the group consisting of:
- hydrogen, or any C1 to C12 hydrocarbyl group, including mixtures of cations meeting this description.
16) A process for softening a paper product comprising:
- providing a paper product;
- contacting the paper product with a composition, wherein the composition comprises:
- i) an amide-substituted quaternary imidazolinium salt present in the amount from about 0.25% to about 20.00% by weight based upon the total weight of the composition;
- ii) a nonionic surfactant;
- and
- iii) a polyhydroxy compound having an average molecular weight which is any molecular weight in the range of 92 to 4000,
- wherein the amide-substituted quaternary imidazolinium salt comprises a cation having the structure:
- in which R1 in each occurrence is independently selected from the group consisting of:
- hydrogen or a hydrocarbyl group comprising any number of carbon atoms between 8 to 22 and wherein R2 is selected from the group consisting of:
- hydrogen, or any C1 to C12 hydrocarbyl group, including mixtures of cations meeting this description.
19) A process for softening a fabric comprising:
- providing a fabric;
- contacting the fabric with a chemical softening composition, wherein the chemical softening composition comprises a salt that contains a cation of a amide-substituted quaternary imidazolinium and a polyhydroxy compound selected from the group consisting of:
- glycerin, polyalkylene glycols, and mixtures thereof.
Dependencies are inferred from the claim text.