Reactive compositions and their use in paper products
AssigneeKimberly-Clark Worldwide, Inc.
InventorThomas G. Shannon
Life of this patent
Estimating the term…
Abstract
A paper product is provided that contains at least one paper web that is applied with a reactive composition. The reactive composition, for example, can contain one or more softening moieties that are capable of debonding hydrogen bonds within a paper web, thereby softening the web. In addition, the reactive composition contains a moiety that can form both a covalent bond and ionic bond with certain groups present on cellulosic fibers. For example, in one embodiment, the moiety contains a positively charged atom that can form an ionic bond with a carboxyl group present on a first cellulosic fiber. In addition, the moiety can contain a pendant hydroxyl group that can form a covalent bond with a carboxyl group present on a second cellulosic fiber.
Claims38
A paper product comprising at least one paper web containing cellulosic fibers and a reactive composition applied to said paper web, said reactive composition having the following structure:
- 10
- wherein,
- a, b, c>0;
- n≧1;
- R1 and R2 are monomers, homopolymers, or block or graft interpolymers that are capable of degrading interfiber hydrogen bonds contained within said paper web;
- and
- Q1 is a monomer, homopolymer, or block or graft interpolymer that contains:
- i) a charged group that is capable of forming an ionic bond with a charged group present on a first cellulosic fiber;
- and
- ii) a pendant functional group that is capable of forming a covalent bond with a free reactive group present on a second cellulosic fiber.
A paper product comprising at least one paper web containing cellulosic fibers and a reactive composition applied to said paper web, said reactive composition having the following structure:
- 12
- wherein,
- a, c>0;
- b=1;
- n≧1;
- R1 and R2 include a moiety selected from the group consisting of a polysiloxane, an aliphatic hydrocarbon, an amphiphilic hydrocarbon, and combinations thereof, and wherein R1 is of the form R1-Z1 and R2 is of the form R2-Z2, wherein Z1 and Z2 are bridging radicals;
- and
- Q1 is a monomer, homopolymer, or block or graft interpolymer that contains:
- i) a positively charged atom that is capable of forming an ionic bond with a negatively charged group present on a first cellulosic fiber;
- and
- ii) a pendant functional group that is capable of forming a covalent bond with a free reactive group present on a second cellulosic fiber.
A method of forming a paper web comprising:
- i) providing a furnish of cellulosic fibers;
- ii) depositing the furnish onto a foraminous surface to form a paper web;
- iii) applying a reactive composition to the furnish of cellulosic fibers, the paper web, or combinations thereof, said reactive composition having the following structure:
- 14
- wherein,
- a, b, c>0;
- n≧1;
- R1 and R2 are monomers, homopolymers, or block or graft interpolymers that are capable of imparting a certain function to the paper web;
- and
- Q1 is a monomer, homopolymer, or block or graft interpolymer that contains:
- a) a positively charged atom that is capable of forming an ionic bond with a negatively charged group present on a first cellulosic fiber of said paper web;
- and
- b) a pendant functional group that is capable of forming a covalent bond with a free reactive group present on a second cellulosic fiber of said paper web;
- and
- iv) thereafter, at least partially drying said paper web.
Dependencies are inferred from the claim text.