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US 10,844,223 B2Granted
Wood adhesive formulation
AssigneeHuntsman International LLC
InventorsServaas Holvoet, Daniele Pratelli
Life of this patent
Estimating the term…
Abstract
A formulation containing (i) a first component formed from at least one isocyanate and at least one polyether and (ii) a second component including at least one amino resin, wherein the amino resin is the condensation product of an aldehyde and at least one of urea, melamine, benzoguanamine, glycoluril, and acetoguanamine. A process for binding lignocellulosic materials using the formulation is also described.
Claims19
A process for binding a plurality of lignocellulosic materials, comprising combining:
- a plurality of lignocellulosic materials;
- and
- (ii) a liquid adhesive formulation obtained by mixing:
- (1) a first component which is formed by mixing at least one isocyanate and at least one polyether, wherein said polyether is an alkoxypolyalkylene glycol compound having a molecular weight in the range of 250 to 4000 and contains at least 15% by weight of ethylene oxide groups, based on 100% by weight of the polyether;
- and wherein the liquid adhesive formulation has an ethylene oxide content of at least 10% based on 100% by weight of the at least one isocyanate and the at least one polyether combined;
- with
- (2) at least one amino resin comprising a condensation product of an aldehyde with a compound selected from the group consisting of urea, melamine, benzoguanamine, glycoluril, acetoguanamine and mixtures thereof, wherein said amino resin is present in an amount of at least 50% by weight based on the weight of the liquid adhesive formulation;
- and
- wherein the polyether is a reaction product of ethylene oxide, propylene oxide and a polyfunctional initiator comprising ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, cyclohexane dimethanol, resorcinol, bisphenol A, glycerol, trimethylolopropane, 1,2,6-hexantriol, pentaerythritol, or mixtures thereof.
6 more elements
A process for binding a plurality of lignocellulosic materials, comprising:
- (i) mixing (1) a first component including at least one isocyanate and at least one polyether and (2) at least one amino resin to form a liquid adhesive formulation, wherein the polyether is a reaction product of ethylene oxide, a polyfunctional initiator, and propylene oxide, and
- wherein said polyether is an alkoxypolyalkylene glycol compound having a molecular weight in the range of 250 to 4000 and contains at least 15% by weight ethylene oxide groups, based on 100% by weight of the polyether;
- and wherein the liquid adhesive formulation has an ethylene oxide content of at least 10% by weight based on based on 100% by weight of the at least one isocyanate and the at least one polyether combined, and
- wherein said amino resin is a reaction product of an aldehyde with a compound selected from the group consisting of urea, melamine, benzoguanamine, glycouril, acetoguanamine, and mixtures thereof, and
- wherein said amino resin is present in an amount of at least 50% by weight based on the total weight of the liquid adhesive formulation and
- (ii) combining the liquid adhesive formulation with a plurality of lignocellulosic materials.
3 more elements
A process for binding a plurality of lignocellulosic materials, comprising combining:
- a plurality of lignocellulosic materials;
- and
- (ii) a liquid adhesive formulation obtained by mixing:
- (1) a first component which is formed by mixing at least one isocyanate and at least one polyether, wherein said polyether is an alkoxypolyalkylene glycol compound having a molecular weight in the range of 250 to 4000 and contains at least 15% by weight of ethylene oxide groups, based on 100% by weight of the polyether;
- and wherein the liquid adhesive formulation has an ethylene oxide content of at least 10% based on 100% by weight of the at least one isocyanate and the at least one polyether combined;
- with
- (2) at least one amino resin comprising a condensation product of an aldehyde with a compound selected from the group consisting of urea, melamine, benzoguanamine, glycoluril, acetoguanamine and mixtures thereof, wherein said amino resin is present in an amount of at least 50% by weight based on the weight of the liquid adhesive formulation;
- and
- wherein the polyether comprises 50% to 73.5% by weight ethylene oxide groups, based on 100% by weight of the polyether.
6 more elements
A process for binding a plurality of lignocellulosic materials, comprising combining:
- a plurality of lignocellulosic materials;
- and
- (ii) a liquid adhesive formulation obtained by mixing:
- (1) a first component which is formed by mixing at least one isocyanate and at least one polyether, wherein said polyether is an alkoxypolyalkylene glycol compound having a molecular weight in the range of 250 to 4000 and contains at least 15% by weight of ethylene oxide groups, based on 100% by weight of the polyether;
- and wherein the liquid adhesive formulation has an ethylene oxide content of at least 10% based on 100% by weight of the at least one isocyanate and the at least one polyether combined;
- with
- (2) at least one amino resin comprising a condensation product of an aldehyde with a compound selected from the group consisting of urea, melamine, benzoguanamine, glycoluril, acetoguanamine and mixtures thereof,
- wherein said amino resin is present in an amount of at least 50% by weight based on the weight of the liquid adhesive formulation;
- wherein the polyether is a reaction product of ethylene oxide, propylene oxide and a polyfunctional initiator comprising ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, cyclohexane dimethanol, resorcinol, bisphenol A, glycerol, trimethylolopropane, 1,2,6-hexantriol, pentaerythritol, or mixtures thereof;
- and wherein the polyfunctional initiator further comprises water.
7 more elements
Dependencies are inferred from the claim text.