Abstract

The present invention relates to an aqueous catalytic composition which accelerates amino plastic resin curing, comprising, in percent by weight, between 55 and 65% water, between 35 and 45% of an ammonium salt, between 0.5 and 4.0% sulfamic acid and between 0.1 and 10% of a pH adjustor, and respective process for curing amino plastic resins used in wood panels in the presence of between 0.1 and 20%, on dry basis, of the composition, under process conditions.

IPC Classes  ?

• C08G 12/02 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
• C08L 61/20 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
• C08L 61/24 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
• C08K 3/24 - AcidsSalts thereof
• C08K 3/28 - Nitrogen-containing compounds
• C08K 5/19 - Quaternary ammonium compounds

Abstract

Described is a formaldehyde scavenger composition for wood laminate, containing between 10 and 99 parts of an alkanolamine and between 90 and 1 part of a glycol per hundred parts of composition, the composition being applied after the laminate pressing step in an amount, in grams per square meter of surface area, of between 5 and 70 g/m2. As a result of the process of applying the claimed composition, the laminate produced exhibits reduced formaldehyde emission and improved water absorption and mechanical properties compared to a control laminate. A process for manufacturing a laminate and a wood laminate are also described.

IPC Classes  ?

• B32B 27/42 - Layered products essentially comprising synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
• C08K 5/17 - AminesQuaternary ammonium compounds
• C08K 5/053 - Polyhydroxylic alcohols

Abstract

A description is given of compositions based on emulsions of wax and particulate inorganic compounds for improved water-repellency, comprising, in terms of a percentage relative to the total composition, from 5% to 90% water, from 0.01% to 20% surfactants, from 2% to 90% waxes and from 2% to 90% particulate inorganic compounds with a particle size of between 0.01 μm and 1000 μm and selected from non-modified phylosilicates such as agalmatolite, potassium aluminosilicate, magnesium silicate talc, or mixtures of these in any proportion, added before or after the emulsification of said waxes, giving rise to a synergistic effect of increasing water-repellency when said compositions are applied to reconstituted wood composite panels, mortars, textures, plaster and dyes for use in civil construction.

IPC Classes  ?

• C09D 191/06 - Waxes
• C08K 3/34 - Silicon-containing compounds
• C09C 1/42 - Clays

Abstract

The invention relates to wax emulsions to which inorganic compounds are added, preferably agalmatolite, potassium aluminosilicate, magnesium silicate talc, or mixtures thereof, added before or after the waxes are emulsified, with the synergistic effect of increasing the water repellence of these emulsions, which are applied to composite, reconstituted wood panels, mortars, textures, gypsum, paints, among other uses in the building industry.

IPC Classes  ?

• B01F 3/08 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed liquids with liquids; Emulsifying
• C09D 5/02 - Emulsion paints

Abstract

A method is described for producing reconstituted wood composite panels with improved water-repellency and reduced formaldehyde emission obtained by adding to the wood and resin mass ultra-fine emulsions based on paraffins and formol scavengers with a nanometric particle distribution, thus promoting an improved surface contact, reducing water absorption and formaldehyde emission by the composites.

IPC Classes  ?

• C08L 91/06 - Waxes
• B32B 21/08 - Layered products essentially comprising wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resinLayered products essentially comprising wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, next to another layer of a specific substance of fibre-reinforced resin
• C09D 1/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
• C09D 191/06 - Waxes
• B27N 7/00 - After-treatment, e.g. reducing swelling or shrinkage, surfacingProtecting the edges of boards against access of humidity
• B27N 3/12 - Moulding of mats from fibres
• B01F 3/08 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed liquids with liquids; Emulsifying
• B27K 3/15 - Impregnating involving polymerisation
• B27G 11/00 - Applying adhesives or glue to surfaces of wood to be joined
• D21H 17/60 - Waxes
• D21H 21/16 - Sizing or water-repelling agents
• D21H 19/44 - Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
• C10L 5/22 - Methods of applying the binder to the other compounding ingredientsApparatus therefor
• B27L 5/00 - Manufacture of veneer
• B05D 7/06 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood