A fibrous material is treated with a binder solution and then heated. The binder comprises a polyester and a biopolymer, such as starch, where the polyester is a product of reaction of a polyol with an anhydride. A method for manufacturing the treated fibrous material comprises treating it with the binder solution and then heating. A cross-linking agent may be added.

Fiber-containing composites are described that include woven or non-woven fibers, and a binder that holds the fibers together. The binder may include the reaction product of a starch and a polycarboxylic acid. The starch has a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 10×10.sup.6 Daltons. The fiber-containing composite has an unaged tensile strength of greater than 4.0 and an aged tensile strength greater than 3.0. Also described are methods of making the fiber-containing composites. The methods may include applying a binder composition to fibers to form coated fibers, measuring a moisture content of the coated fibers, and curing the coated fibers in a curing oven to form the fiber-containing composite. The binder composition may include a starch having a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 10×10.sup.6 Daltons, and a polycarboxylic acid.

Fiber-containing composites are described that include woven or non-woven fibers, and a binder that holds the fibers together. The binder may include the reaction product of a starch and a polycarboxylic acid. The starch has a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 1×10.sup.7 Daltons. The fiber-containing composite has an unaged tensile strength of greater than 4.0 and an aged tensile strength greater than 3.0. Also described are methods of making the fiber-containing composites. The methods may include applying a binder composition to fibers to form coated fibers, measuring a moisture content of the coated fibers, and curing the coated fibers in a curing oven to form the fiber-containing composite. The binder composition may include a starch having a weight average molecular weight that ranges from 1×10.sup.6 Daltons to 1×10.sup.7 Daltons, and a polycarboxylic acid.

Binders, resinated furnishes, and methods for making composite lignocellulose products therefrom. The binder can include about 70 wt % to about 99.7 wt % of an aldehyde-based resin, about 0.3 wt % to about 30 wt % of an isocyanate-based resin, about 10 wt % to about 63 wt % of an extender, and about 145 wt % to about 230 wt % of water, where all weight percent values are based on a combined solids weight of the aldehyde-based resin and the isocyanate-based resin. The binder has a long pot life and can be used with lignocellulose substrates having a water content of 10 wt % or more.

Binders, resinated furnishes, and methods for making composite lignocellulose products therefrom. The binder can include about 70 wt % to about 99.7 wt % of an aldehyde-based resin, about 0.3 wt % to about 30 wt % of an isocyanate-based resin, about 10 wt % to about 63 wt % of an extender, and about 145 wt % to about 230 wt % of water, where all weight percent values are based on a combined solids weight of the aldehyde-based resin and the isocyanate-based resin. The binder has a long pot life and can be used with lignocellulose substrates having a water content of 10 wt % or more.

Provided is a PSA sheet that shows excellent adhesive strength to both high-polar and low-polar adherends with reduced dependence on fossil-resource-based materials. The PSA sheet has a PSA layer formed from a natural rubber-based PSA. At least 20% by weight of all repeat units forming the base polymer of the PSA are derived from an acrylic monomer. Biomass-derived carbons account for at least 50% of the total carbon content of the PSA layer. The PSA sheet has an adhesive strength of 18 N/20 mm or greater to a stainless steel plate (after left at 50 C. for 2 h) and an adhesive strength of 15 N/20 mm or greater to a polypropylene plate (after left at 50 C. for 2 h).

Provided is a PSA sheet that shows excellent adhesive strength to both high-polar and low-polar adherends with reduced dependence on fossil-resource-based materials. The PSA sheet has a PSA layer formed from a natural rubber-based PSA. At least 20% by weight of all repeat units forming the base polymer of the PSA are derived from an acrylic monomer. Biomass-derived carbons account for at least 50% of the total carbon content of the PSA layer. The PSA sheet has an adhesive strength of 18 N/20 mm or greater to a stainless steel plate (after left at 50 C. for 2 h) and an adhesive strength of 15 N/20 mm or greater to a polypropylene plate (after left at 50 C. for 2 h).

The invention relates to a binder for cellulose-containing materials which contains a) hydroxyaldehyde, b) a protein-containing component of animal origin and c) a component comprising phenolic oligomers. The invention likewise relates to the use of the binder according to the invention for producing a composite material, to a process for producing a composite material and to a composite material obtainable by the process according to the invention.

The invention relates to a binder for cellulose-containing materials which contains a) hydroxyaldehyde, b) a protein-containing component of animal origin and c) a component comprising phenolic oligomers. The invention likewise relates to the use of the binder according to the invention for producing a composite material, to a process for producing a composite material and to a composite material obtainable by the process according to the invention.

The present invention has for its object to provide an adhesive composition that is based on a naturally occurring material less likely to have adverse influences on the human body and has a tensile shear strength (adhesive strength) of at least 1 MPa with respect to a variety of adherends. The present invention provides an adhesive composition including at least a first pack and a second pack, wherein the first pack contains a tannic acid derivative in which a hydrogen atom in at least some hydroxyl group of tannic acid is substituted by a chain hydrocarbon group having at least one hydroxyl group, and the second pack contains a hydrocarbon having at least two cyanate groups or a derivative of the hydrocarbon.