Patent classifications
C08L61/20
METHOD FOR PRODUCING LIGNOCELLULOSE MATERIALS
The present invention relates to a novel and improved, batchwise or continuous, preferably continuous, process for producing single-layer or multilayer lignocellulose materials, comprising the process steps of (Ia) producing a mixture M1 and (Ib) optionally one or more mixture(s) M2, (II) scattering mixture M1 and any mixture(s) M2 to give a mat, (III) optionally precompacting the scattered mat and (IV) hot pressing,
in that mixture M1 comprises the lignocellulose particles (component LCP-1) and additionally a) 0.005% to 0.5% by weight of organic carboxylic acid, carboxylic anhydride, carbonyl chloride or mixtures thereof (component A) b) 0.05% to 3% by weight of organic isocyanates having at least two isocyanate groups (component B) and c) 5% to 15% by weight of binder selected from the group of the amino resins (component C) d) 0% to 2% by weight of hardener (component D) and e) 0% to 5% by weight of additive (component E),
and mixture(s) M2 comprise(s) the lignocellulose particles (component LCP-2) and additionally f) 0% to 0.3% by weight of organic carboxylic acid, carboxylic anhydride, carbonyl chloride or mixtures thereof (component F), g) 1% to 30% by weight of binder selected from the group consisting of amino resin, phenolic resin, protein-based binder and other polymer-based binders or mixtures thereof (component G-1) and 0% to 3% by weight of organic isocyanate having at least two isocyanate groups (component G-2), h) 0% to 2% by weight of hardener (component H) and i) 0% to 5% by weight of additives (component I),
with the proviso that the following conditions are fulfilled:
a.sub.min<a<a.sub.max
and
a.sub.min=[(1/6000.Math.T)+(65/6000)1, preferably a.sub.min=[(1/4500.Math.T)+(65/4500)], more preferably a.sub.min=[(1/3500.Math.T]+(65/3500)]
and
a.sub.max=[(1/2000.Math.T)+(75/2000)], preferably a.sub.max=[(1/2500.Math.T)+(75/2500)], more preferably a.sub.max=[(1/3000.Math.T)+(75/3000)], where T is the temperature of mixture M1 in C. after process step (Ia) and is between 10 and 65 C., preferably 12 and 62 C., more preferably 15 to 60 C., and a is the amount of acid equivalents in component A) in relation to the mass of component C) in m
ADHESION PROMOTING COMPOSITIONS AND METHOD OF IMPROVING FUEL RESISTANCE OF A COATED ARTICLE
The present invention is directed to film-forming compositions comprising: a) a non-chlorinated, linear polyolefin polymer comprising 0.5 to 10 percent by weight residues of an ethylenically unsaturated anhydride or acid; b) an aminoplast; and c) a component comprising: i) at least one non-chlorinated hydrocarbon having at least 18 carbon atoms and optionally aromatic groups and/or oxygen heteroatoms; and/or ii) an alkyd resin. The present invention is also drawn to methods of improving fuel resistance of a coated article, comprising: (1) applying the film-forming composition to a substrate to form a coated substrate; (2) optionally subjecting the coated substrate to a temperature for a time sufficient to cure the film-forming composition; (3) applying at least one curable film-forming composition to the coated substrate to form a multi-layer coated substrate; and (4) subjecting the multi-layer coated substrate to a temperature and for a time sufficient to cure all of the film-forming compositions.
ADHESION PROMOTING COMPOSITIONS AND METHOD OF IMPROVING FUEL RESISTANCE OF A COATED ARTICLE
The present invention is directed to film-forming compositions comprising: a) a non-chlorinated, linear polyolefin polymer comprising 0.5 to 10 percent by weight residues of an ethylenically unsaturated anhydride or acid; b) an aminoplast; and c) a component comprising: i) at least one non-chlorinated hydrocarbon having at least 18 carbon atoms and optionally aromatic groups and/or oxygen heteroatoms; and/or ii) an alkyd resin. The present invention is also drawn to methods of improving fuel resistance of a coated article, comprising: (1) applying the film-forming composition to a substrate to form a coated substrate; (2) optionally subjecting the coated substrate to a temperature for a time sufficient to cure the film-forming composition; (3) applying at least one curable film-forming composition to the coated substrate to form a multi-layer coated substrate; and (4) subjecting the multi-layer coated substrate to a temperature and for a time sufficient to cure all of the film-forming compositions.
Viscosity modified formaldehyde-free binder compositions and methods
Processes of making a non-woven glass fiber mat are described. The process may include forming an aqueous dispersion of fibers. The process may also include passing the dispersion through a mat forming screen to form a wet mat. The process may further include applying a carbohydrate binder composition to the wet mat to form a binder-containing wet mat. The binder compositions may include a carbohydrate, a nitrogen-containing compound, and a thickening agent. The binder compositions may have a Brookfield viscosity of 7 to 50 centipoise at 20? C. The thickening agents may include modified celluloses such as hydroxyethyl cellulose (HEC) and carboxymethyl cellulose (CMC), and polysaccharides such as xanthan gum, guar gum, and starches. The process may include curing the binder-containing wet mat to form the non-woven glass fiber mat.
Viscosity modified formaldehyde-free binder compositions and methods
Processes of making a non-woven glass fiber mat are described. The process may include forming an aqueous dispersion of fibers. The process may also include passing the dispersion through a mat forming screen to form a wet mat. The process may further include applying a carbohydrate binder composition to the wet mat to form a binder-containing wet mat. The binder compositions may include a carbohydrate, a nitrogen-containing compound, and a thickening agent. The binder compositions may have a Brookfield viscosity of 7 to 50 centipoise at 20? C. The thickening agents may include modified celluloses such as hydroxyethyl cellulose (HEC) and carboxymethyl cellulose (CMC), and polysaccharides such as xanthan gum, guar gum, and starches. The process may include curing the binder-containing wet mat to form the non-woven glass fiber mat.
Thermoset foams, and method for manufacturing same from reducing sugars and amines
A process for manufacturing a solid thermoset foam includes the following successive stages: (a) providing an expandable and thermosetting composition including a first reactant chosen from reducing sugars and a second reactant chosen from primary amines, primary amine acid addition salts, secondary amines, secondary amine acid addition salts, and ammonium salts of formula R.sup.n(NH.sub.4.sup.+).sub.n where n is an integer at least equal to 1 and R.sup.n represents the residue of an organic or inorganic acid; (b) introducing the expandable and thermosetting composition into a mold or applying the expandable composition to a support so as to form a film having a thickness at least equal to 1 mm; and (c) heating the expandable and thermosetting composition to a temperature at least equal to 140 C. to react the first reactant with the second reactant and to form, by polymerization and chemical foaming, a block of solid thermoset foam.
Thermoset foams, and method for manufacturing same from reducing sugars and amines
A process for manufacturing a solid thermoset foam includes the following successive stages: (a) providing an expandable and thermosetting composition including a first reactant chosen from reducing sugars and a second reactant chosen from primary amines, primary amine acid addition salts, secondary amines, secondary amine acid addition salts, and ammonium salts of formula R.sup.n(NH.sub.4.sup.+).sub.n where n is an integer at least equal to 1 and R.sup.n represents the residue of an organic or inorganic acid; (b) introducing the expandable and thermosetting composition into a mold or applying the expandable composition to a support so as to form a film having a thickness at least equal to 1 mm; and (c) heating the expandable and thermosetting composition to a temperature at least equal to 140 C. to react the first reactant with the second reactant and to form, by polymerization and chemical foaming, a block of solid thermoset foam.
Thermoset foams, and method for manufacturing same from reducing sugars and amines
A process for manufacturing a solid thermoset foam includes the following successive stages: (a) providing an expandable and thermosetting composition including a first reactant chosen from reducing sugars and a second reactant chosen from primary amines, primary amine acid addition salts, secondary amines, secondary amine acid addition salts, and ammonium salts of formula R.sup.n(NH.sub.4.sup.+).sub.n where n is an integer at least equal to 1 and R.sup.n represents the residue of an organic or inorganic acid; (b) introducing the expandable and thermosetting composition into a mold or applying the expandable composition to a support so as to form a film having a thickness at least equal to 1 mm; and (c) heating the expandable and thermosetting composition to a temperature at least equal to 140 C. to react the first reactant with the second reactant and to form, by polymerization and chemical foaming, a block of solid thermoset foam.
WATERBORNE AMINO BAKING VARNISH AND METHOD FOR PREPARING THE SAME
The waterborne amino baking varnish is prepared with raw materials in percent by weight comprising: 25-40% of a waterborne polyurethane, 4-5% of a waterborne epoxy resin, 7-10% of a waterborne amino resin, 25-35% of deionized water, 1.5-2.5% of a pH regulator, 0.3-0.5% of a wetting agent, 0.2-0.6% of a defoamer, 0.5-1% of a dispersant, 1-5% of a cosolvent, 10-20% of a pigment and a filler, 2-5% of nano-alumina, 0.3-0.5% of lithium magnesium silicate, 0.3-0.5% of a thickener, and 0.5-0.8% of a leveling agent.
VISCOSITY MODIFIED GLASS FIBER PRODUCTS
Glass fiber products, including glass fiber mat and insulation products, are described. A glass fiber mat may include glass fibers and a binder. The binder may include cured products from a carbohydrate binder composition. The carbohydrate binder composition may include a carbohydrate, a nitrogen-containing compound, and a thickening agent. The carbohydrate binder composition may have a Brookfield viscosity of 7 to 50 centipoise at 20? C. as measured with a Brookfield viscometer using spindle 18 at 60 rpm. Glass fiber mats may include a component of a roofing shingle. Glass fiber mats may be a facer, battery separator, a filtration media, or a backing mat.