CATALYST FOR USE IN BINDER COMPOSITIONS
A catalyst composition, binder composition, and method for producing a cellulosic material is shown and described herein. In embodiments, the catalyst composition comprises (i) a metal elected from a metal complex comprising a metal from Groups IB, IIB, IVB, VB, VIIB, VIIB, and VIIIB of the Periodic Table of the Elements; and (ii) a solvent selected from a dialkyl sulfoxide, an organic carbonate; acetic acid; a carboxylic acid, an N-alkyl amides, organic carboxylic acid diester or diamide or mixed ester-amide, or a combinations of two or more thereof.
1 . A catalyst composition comprising (i) a metal elected from a metal complex comprising a metal from Groups IB, IIB, IVB, VB, VIIB, VIIB, and VIIIB of the Periodic Table of the Elements; and (ii) a solvent selected from a dialkyl sulfoxide, an organic carbonate; acetic acid; a carboxylic acid, an N-alkyl amides, organic carboxylic acid diester or diamide or mixed ester-amide, or a combinations of two or more thereof.
2 . The catalyst composition of claim 1 , wherein the metal is selected from Cu(II), Ni(II), Fe(II), Fe(III), Fe(IV), Zn, Zr, Mn, Cr, Ti, V, Mo, Ru, Rh, Bi, Sn, or a combination of two or more thereof.
3 . The catalyst composition of claim 2 , where in the metal complex comprises a ligand or counter ion chosen from a carboxylate, a diketonate, a salicylate, an organic salt, a halide, or a combination of two or more thereof.
4 . The catalyst composition of claim 1 , wherein the metal is cupric acetylacetonate.
5 . The catalyst composition of claim 1 , wherein the metal is cupric acetate.
6 . The catalyst composition of claim 1 , wherein the metal is cupric salicylate.
7 . The catalyst composition of claim 1 , wherein the dialkyl sulfoxide is chosen from dimethyl sulfoxide, diethyl sulfoxide, diisobutyl sulfoxide, or a combination of two more thereof, the organic carbonate is chosen from di-methyl-carbonate, ethylene-carbonate, propylene-carbonate, or a combination of two or more thereof, the carboxylic acid is chosen from one or more aliphatic carboxylic acids having 2-50 carbon atoms; the N-alkyl amide is chosen from N-methyl pyrrolidone (NMP), N-n-butylpyrrolidone, N-isobutylpyrrolidone, N-t-butylpyrrolidone, N-n-pentylpyrrolidone, N-(methyl-substituted butyl) pyrrolidone, ring-methyl-substituted N-propyl pyrrolidone, ring-methyl-substituted N-butyl pyrrolidone, N-(methoxypropyl) pyrrolidone, N-(methoxypropyl) pyrrolidone, 1,5-dimethyl-pyrrolidone, and isomers thereof, or combinations of two or more thereof.
8 . The catalyst composition of claim 1 , wherein the metal component is present in an amount of from about 0.04 wt. % to about 10 wt. %; and the solvent is present in an amount of from about 90 wt. % to about 99.96 wt. %
9 . The catalyst composition of claim 1 , wherein the metal complex comprises copper, and the solvent is dimethylsulfoxide.
10 . The catalyst composition of claim 1 , wherein the solvent is a mixture of a dialkyl sulfoxide and a N-alkyl amide.
11 . The catalyst composition of claim 10 , wherein the dialkyl sulfoxide is present in an amount of from about 60 wt. % to about 90 wt. % based on the total weight of the solvent; and the N-alkyl amide may be present in an amount of from about 10 wt. % to about 40 wt. % based on the total amount of the solvent.
12 . The catalyst composition of claim 10 , wherein the dialkyl sulfoxide is chosen from dimethyl sulfoxide, and the N-alkyl amide is N-methyl pyrrolidone.
13 . The catalyst composition of claim 1 , wherein the solvent comprises an organic carbonate and acetic acid and/or a carboxylic acid.
14 . The catalyst composition of claim 13 , wherein the organic carbonate is present in an amount of from about 10 wt. % to about 90 wt. % based on the total weight of the solvent; and the acetic acid or carboxylic acid may be present in an amount of from about 10 wt. % to about 50 wt. % based on the total amount of the solvent.
15 . The catalyst composition of claim 12 , wherein the solvent is a mixture of propylene carbonate and acetic acid.
16 . The catalyst composition of claim 1 , wherein the solvent comprises an organic carbonate an amino alcohol, and/or a carboxylic acid.
17 . The catalyst composition of claim 16 , wherein the organic carbonate is present in an amount of from about 50 wt. % to about 99 wt. % based on the total weight of the solvent; and the acetic acid or carboxylic acid may be present in an amount of from about 0.5 wt. % to about 50 wt. % based on the total amount of the solvent; and the amino alcohol is present in an amount of about 0.5 wt % to about 50 wt % based on the total amount of the solvent.
18 . The catalyst composition of claim 1 , wherein the solvent is a mixture of propylene carbonate an amine and a carboxylic acid.
19 . A binder composition comprising (a) an isocyanate, and (b) a catalyst composition of claim 1 .
20 . The binder composition of claim 19 , wherein the binder comprises from about 60 to 99.9 wt. % of the isocyanate compound and from about 0.1 to about 40 wt, % of the catalyst composition based on the total weight of the binder composition.
21 . A binder composition for forming a cellulosic composite, the composition comprising (a) an isocyanate compound, (b) a catalyst composition of claim 1 , and (c) a cellulosic material.
22 . A composition for forming a cellulosic composite, the composition comprising (a) a binder composition of claim 19 , and (b) a cellulosic material.
23 . A method for producing a cellulosic composite comprising forming a mixture of a cellulosic material, a catalyst, and an isocyanate and subjecting the mixture to heat and pressure to form a composite, wherein (i) the catalyst is chosen from a catalyst composition comprising (a) a metal elected from a metal complex comprising a metal from Groups IB, IIB, IVB, VB, VIIB, VIIB, and VIIIB of the Periodic Table of the Elements; and (b) a solvent selected from a dialkyl sulfoxide an organic carbonate: acetic acid: a carboxylic acid an N-alkyl amides organic carboxylic acid diester or diamide or mixed ester-amide, or a combinations of two or more thereof, and the catalyst and isocyanate are provide separately, or (ii) the catalyst and isocyanate are provided from a binder composition comprising (a) an isoeyanate, and (b) a catalyst composition comprising (a) a metal elected from a metal complex comprising a metal from Groups IB, IIB, IVB, VB, VIIB, VIIB, and VIIIB of the Periodic Table of the Elements; and (b) a solvent selected from a dialkyl sulfoxide, an organic carbonate: acetic acid; a carboxylic acid, an N-alkyl amides, organic carboxylic acid diester or diamide or mixed ester-amide, or a combinations of two or more thereof.