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US 5,547,745 AGranted
Particle binders
AssigneeWeyerhaeuser Company
InventorsMichael R. Hansen, Richard H. Young, Sr.
Life of this patent
Estimating the term…
Abstract
The binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, wherein the binder molecules have at least one functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that may be adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder in turn may be adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
Claims78
A fibrous product comprising individualized fibers, said product made by the method comprising the steps of:
- providing fibrous material comprising individualized fibers having a hydrogen bonding functionality;
- providing particles having a hydrogen bonding or a coordinate covalent bond forming functionality;
- selecting a binder from the group consisting of a polymeric binder, a non-polymeric organic binder, and nonreactive combinations thereof with each other or with other binders, the binder comprising binder molecules, the binder molecules having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group capable of forming a hydrogen bond with the fibrous material,
- wherein the polymeric binder is selected from the group consisting of polypropylene glycol, a polycarboxylic acid, a polycarboxylate, a poly(lactone) polyol, a polyamide, a polyamine, a polysulfonic acid, a polysulfonate, and combinations thereof, and
- wherein the non-polymeric organic binder has a volatility less than water;
- and
- exposing at least a portion of the particles to sufficient amounts of the binder in the presence of the fibrous material, under conditions that favor formation of non-covalent bonds, to bind at least a portion of the particles to the fibrous material.
4 more elements
A fibrous product comprising:
- fibrous material comprising individualized fibers having a hydrogen bonding functionality;
- particles having a hydrogen bonding or a coordinate covalent bond forming functionality;
- a binder selected from the group consisting of a polymeric binder, a non-polymeric organic binder, and nonreactive combinations thereof with each other or with other binders, the binder comprising binder molecules, the binder molecules having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group capable of forming a hydrogen bond with the fibrous material,
- wherein the polymeric binder is selected from the group consisting of polypropylene glycol, a polycarboxylic acid, a polycarboxylate, a poly(lactone) polyol, a polyamide, a polyamine, a polysulfonic acid, a polysulfonate, and combinations thereof,
- wherein the non-polymeric organic binder has a volatility less than water;
- and
- at least a portion of the particles being bound in particulate form to the fibrous material.
4 more elements
A fibrous product comprising:
- fibrous material comprising a fiber having a hydrogen bonding functionality;
- and
- a binder selected from the group consisting of a monoglyceride, a diglyceride, and combinations thereof, the binder having a volatility less than water, and the binder having a functional group that is capable of forming hydrogen bonds or coordinate covalent bonds with particles that are capable of forming hydrogen bonds or coordinate covalent bonds, and a functional group that is capable of forming hydrogen bonds with the fibrous material, the binder having beech combined with the fibrous material in the substantial absence of the particle.
A fibrous product comprising:
- individualized wood pulp fibers having hydrogen bonding functionalities;
- and
- a binder dispersed through the individualized wood pulp fibers and selected from the group consisting of glycerin, a glycerin monoester, a glycerin diester, a polyglycerin oligomer, urea, and combinations thereof.
A fibrous product comprising:
- fibrous material comprising individualized fibers having a hydrogen bonding functionality;
- and
- a binder selected from the group consisting of glycerin, a glycerin monoester, a glycerin diester, urea, and combinations thereof, the binder having a volatility less than water, the binder comprising binder molecules, wherein the binder molecules have at least one functional group that is capable of forming hydrogen bonds or coordinate covalent bonds with particles that are capable of forming hydrogen bonds or coordinate covalent bonds, and at least one functional group that is capable of forming hydrogen bonds with the fibrous material.
A fibrous product comprising:
- bulk fibers comprising individualized fibers having a hydrogen bonding functionality;
- and
- a binder on at least a portion of the bulk fibers and selected from the group consisting of glycerin, a glycerin monoester, a glycerin diester, a polyglycerin oligomer, urea, and combinations thereof.
A fibrous product comprising:
- individualized wood pulp fibers having hydrogen bonding functionalities;
- and
- a binder on at least a portion of the individualized wood pulp fibers and selected from the group consisting of glycerin, a glycerin monoester, a glycerin diester, a polyglycerin oligomer, urea, and combinations thereof.
A fibrous product comprising:
- bulk fibers comprising individualized fibers having a hydrogen bonding functionality;
- and
- a binder dispersed through the bulk fibers and selected from the group consisting of glycerin, a glycerin monoester, a glycerin diester, a polyglycerin oligomer, urea, and combinations thereof.
A fibrous product produced by the method comprising the steps of:
- providing fibrous material comprising individualized fibers having a hydrogen bonding functionality;
- providing particles having a hydrogen bonding or a coordinate covalent bond forming functionality;
- selecting a binder from the group consisting of a polymeric binder, a non-polymeric organic binder, and nonreactive combinations thereof with each other or with other binders, the binder comprising binder molecules, the binder molecules having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group capable of forming a hydrogen bond with the fibrous material,
- wherein the polymeric binder is selected from the group consisting of a polyglycol, a polycarboxylic acid, a polycarboxylate, a poly(lactone)polyol, a polyamide, a polyamine, a polysulfonic acid, polysulfonate, and combinations thereof, and
- wherein the non-polymeric organic binder has a volatility less than water;
- exposing at least a portion of the particles to sufficient amounts of the binder in the presence of the fibrous material, under conditions that favor formation of noncovalent bonds, to bind at least a portion of the particles to the fibrous material;
- and
- wherein the step of exposing at least a portion of the particles to the binder in the presence of the fibrous material comprises providing the binder on the fibrous material in the absence of the particles, allowing the binder to assume an inactive state, then later activating the binder from an inactive state in the presence of the particles and fibrous material by providing heat, an activating fluid, or by applying kinetic energy to the fibrous material and inactive binder.
5 more elements
A fibrous product comprising individualized fibers, said fibrous product made by a process comprising the steps of:
- providing fibrous material comprising a fiber having a hydrogen bonding functionality;
- providing particles having a hydrogen bonding or a coordinate covalent bond forming functionality;
- selecting a binder from the group consisting of a polymeric binder, a non-polymeric organic binder and non-reactive combinations thereof;
- and
- exposing the particles to sufficient amounts of the binder in the presence of the fibrous material, under conditions that favor the formation of non-covalent bonds, to bind the particles to the fibrous material;
- said binder having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group capable of forming a hydrogen bond with the fibrous material;
- wherein each of said functional groups is selected from the group consisting of a carboxyl, a carboxylate, a carbonyl, a sulfonic acid, a sulfonate, a hydroxyl, a phosphoric acid, a phosphate, an amide, an amine, and combinations thereof
- wherein the polymeric binder is selected from the group consisting of polypropylene glycol, a polycarboxylic acid, a polycarboxylate, a poly(lactone) polyol, a polyamide, a polyamine, a polysulfonic acid, a polysulfonate, and combinations thereof;
- and
- wherein the non-polymeric organic binder has a volatility less than water.
7 more elements
A fibrous product comprising individualized fibers, said fibrous product made by a process comprising the steps of:
- providing fibrous material comprising a fiber having a hydrogen bonding functionality, wherein the fibrous material comprises individualized cellulose fibers having hydrogen bonding functional sites, wherein the cellulose fibers are cured in the presence of a crosslinking material to produce high bulk fibers with intrafiber covalent crosslinks while leaving hydrogen bonding functional sites available on the cured fibers, and wherein the cured cellulose fibers are fiberized to reduce interfiber bonding;
- providing particles having a hydrogen bonding or a coordinate covalent bond forming functionality;
- providing a binder selected from the group consisting of a polymeric binder, a non-polymeric organic binder and non-reactive combinations thereof;
- applying the binder to the fibers before, during or after the fibers are cured or fiberized;
- adding the particles to the fibers before, during or after the fibers are cured;
- and
- exposing the particles to sufficient amounts of the binder in the presence of the fibrous material, under conditions that favor the formation of non-covalent bonds, to bind the particles to the fibrous material such that the particles retain their individual particulate form on the surface of the fiber;
- said binder having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group capable of forming a hydrogen bond with the fibrous material;
- wherein the polymeric binder is selected from the group consisting of polypropylene glycol, a polycarboxylic acid, a polycarboxylate, a poly(lactone) polyol, a polyamide, a polyamine, a polysulfonic acid, a polysulfonate, and combinations thereof;
- and
- wherein the non-polymeric organic binder has a volatility less than water.
8 more elements
A fibrous product comprising individualized fibers, said fibrous product made by a process comprising the steps of:
- providing fibrous material comprising a fiber having a hydrogen bonding functionality;
- providing particles having a hydrogen bonding or a coordinate covalent bond forming functionality;
- selecting a binder from the group consisting of a polymeric binder, a non-polymeric organic binder and non-reactive combinations thereof said binder capable of being cured to crosslink the fibrous material;
- applying the binder to the fibrous material;
- curing the binder to produce internally crosslinked high bulk fibers while leaving some of the binder unreacted;
- and
- adding particles to the fibrous material and binder, under conditions that favor the formation of non-covalent bonds, to bind the particles to the fibrous material with the unreacted binder;
- said binder having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group capable of forming a hydrogen bond with the fibrous material;
- wherein the polymeric binder is selected from the group consisting of polypropylene glycol, a polycarboxylic acid, a polycarboxylate, a poly(lactone) polyol, a polyamide, a polyamine, a polysulfonic acid, a polysulfonate, and combinations thereof;
- and
- wherein the non-polymeric organic binder has a volatility less than water.
8 more elements
A fibrous product comprising individualized fibers, said fibrous product made by a process comprising the steps of:
- providing fibrous material comprising a fiber having a hydrogen bonding functionality;
- providing particles having a hydrogen bonding or a coordinate covalent bond forming functionality;
- selecting a binder from the group consisting of a polymeric binder, a non-polymeric organic binder and non-reactive combinations thereof;
- and
- exposing the particles to sufficient amounts of the binder in the presence of the fibrous material, under conditions that favor the formation of non-covalent bonds by providing the binder on the fibrous material in the absence of the particles, allowing the binder to assume an inactive state, then later activating the binder from an inactive state in the presence of the particles and fibrous material by providing heat, an activating fluid, or by applying kinetic energy to the fibrous material and inactive binder, to bind the particles to the fibrous material;
- said binder having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group capable of forming a hydrogen bond with the fibrous material;
- wherein the polymeric binder is selected from the group consisting of polyglycol, a polycarboxylic acid, a polycarboxylate, a poly(lactone) polyol, a polyamide, a polyamine, a polysulfonic acid, a polysulfonate, and combinations thereof;
- and
- wherein the non-polymeric organic binder has a volatility less than water.
6 more elements
Dependencies are inferred from the claim text.