The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a coupling agent, and a binder resin, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a coupling agent, and a binder. The coupling agent is believed to increase the hydrophilicity (wetability) of the lipophilic cellulosic material.

The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components:

(a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative;

(b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers,

(c) a resin selected from melamine resin and/or phenol resin, and

(d) optionally a rheology modifier selected from water and/or glycerol.

The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.

The disclosure concerns a composition for three-dimensional printing, said composition being free from polylactic acid (PLA) and includes the following components:

(a) a polysaccharide comprising a cellulose derivative and/or a lignocellulosic derivative;

(b) a pH regulator selected from at least one of the following: organic acids, inorganic acids, acid generating salts, bases, buffers,

(c) a resin selected from melamine resin and/or phenol resin, and

(d) optionally a rheology modifier selected from water and/or glycerol.

The disclosure also concerns a kit of parts for producing the described composition, a method for three-dimensional printing of the described composition and articles obtainable by said method.

The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a coupling agent, and a binder resin, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a coupling agent, and a binder. The coupling agent is believed to increase the hydrophilicity (wetability) of the lipophilic cellulosic material.

The invention relates to systems and techniques for manufacturing articles containing cellulosic material, a coupling agent, and a binder resin, and related processes of making and using the cellulosic articles. In particularly exemplary embodiments, the manufactured articles are door skins, sometimes known as door facings, and doors made from the door skins. The article contains a lipophilic cellulosic material, a coupling agent, and a binder. The coupling agent is believed to increase the hydrophilicity (wetability) of the lipophilic cellulosic material.

The present disclosure refers to an acid-cured coating composition with low free formaldehyde emission and preparation method thereof. The acid-cured coating composition comprises an alkyd resin, an amino resin, and an acetoacetyl-functional silicon-based resin, wherein upon curing, the amino resin itself releases at least 0.8 wt % of formaldehyde, based on the weight of the amino resin; weight ratio of the alkyd resin and the amino resin is in a range of from 70:30 to 45:55. The present disclosure also refers to a coated article.

The present disclosure refers to an acid-cured coating composition with low free formaldehyde emission and preparation method thereof. The acid-cured coating composition comprises an alkyd resin, an amino resin, and an acetoacetyl-functional silicon-based resin, wherein upon curing, the amino resin itself releases at least 0.8 wt % of formaldehyde, based on the weight of the amino resin; weight ratio of the alkyd resin and the amino resin is in a range of from 70:30 to 45:55. The present disclosure also refers to a coated article.

Disclosed are methods of protecting porous substrates and/or increasing the peel-resistance of coatings and stains for porous substrates. The methods may include providing a stain or coating comprising a microencapsulated self-healing material; and applying the stain or coating to a porous substrate. Damage to the stain or coating may release the self-healing material at a site of damage, such as a crack or scratch in the stain or coating. The self-healing material may be a polymeric precursor, an unsaturated polyester resin or alkyd, a fatty acid-based natural oil or derivative thereof, or a cross-linkable silane or siloxane monomer or resin. The microencapsulated self-healing material may include a microcapsule having a shell wall that includes a thermosetting polymer or a thermoplastic polymer; the thermosetting polymer may include urea-formaldehyde, melamine formaldehyde, polyurethane, polyurea, or polyacrylate; and the thermoplastic polymer comprises poly(methyl methacrylate), poly(lactic acid), or poly(glycolic acid).

Binder compositions are described that include a phenol, a urea compound, formaldehyde, and at least one cyclic urea-dialdehyde compound. The cyclic urea-dialdehyde compound forms crosslinking bonds between polymers of phenol-urea-formaldehyde when the binder composition is cured. Also described are methods of making fiberglass insulation products using the above-described binder compositions. The methods may include contacting the binder composition with glass fibers and forming an amalgam of the binder composition and the glass fibers. The amalgam may be heated to form mats of the glass fibers and binder. The mats may be processed into the fiberglass insulation products.

Binder compositions are described that include a phenol, a urea compound, formaldehyde, and at least one cyclic urea-dialdehyde compound. The cyclic urea-dialdehyde compound forms crosslinking bonds between polymers of phenol-urea-formaldehyde when the binder composition is cured. Also described are methods of making fiberglass insulation products using the above-described binder compositions. The methods may include contacting the binder composition with glass fibers and forming an amalgam of the binder composition and the glass fibers. The amalgam may be heated to form mats of the glass fibers and binder. The mats may be processed into the fiberglass insulation products.