Powdered resins with fillers
View Patent ↗Particulate binder compositions and methods for making and using same are provided. The binder composition for producing composite lignocellulose products can include an aldehyde based resin and a filler, an extender, or a combination thereof. The binder composition can be in the form of particulates. The particulates can each comprises the filler, the extender, or the combination thereof and the aldehyde based resin.
1. A binder composition for making composite lignocellulose products, comprising: a mixture comprising a first plurality of particulates and a second plurality of particulates, wherein:
the first plurality of particulates comprises a phenol-formaldehyde resole resin having a weight average molecular weight of 2,000 Daltons to about 8,000 Daltons,
the second plurality of particulates comprises a filler, an extender, or a combination thereof,
the first plurality of particulates is free of the filler and the extender,
the second plurality of particulates is free of the phenol-formaldehyde resole resin,
the binder composition comprises about 1 wt % to 10 wt % of the second plurality of particulates, based on a combined weight of the first plurality of particulates and the second plurality of particulates,
the filler comprises a nut shell, a seed shell, a fruit pit, or any combination thereof, and
the extender comprises corn flour, soy flour, wheat flour, or any combination thereof.
2. The binder composition of claim 1 , wherein:
the first plurality of particulates and the second plurality of particulates each have an average particle size of about 1 μm to about 150 μm,
the binder composition consists essentially of the first plurality of particulates and the second plurality of particulates,
the filler comprises pecan shell, peanut shell, or a combination thereof, and
the extender comprises corn flour.
3. The binder composition of claim 1 , wherein:
the binder composition has a packed bulk density of about 0.15 g/cm 3 to 0.55 g/cm 3 ,
the phenol-formaldehyde resole resin has a weight average molecular weight of 2,000 Daltons to about 6,000 Daltons and a formaldehyde to phenol molar ratio of about 1.9:1 to about 2.5:1,
the second plurality of particulates comprises the filler,
the filler comprises pecan shell, peanut shell, or a combination thereof,
the first plurality of particulates and the second plurality of particulates each have an average particle size of about 1 μm to about 150 μm, and
the binder composition comprises about 1 wt % to 9 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
4. The binder composition of claim 1 , wherein:
the phenol-formaldehyde resole resin has a weight average molecular weight of 2,000 Daltons to about 6,000 Daltons and a formaldehyde to phenol molar ratio of about 1.9:1 to about 2.5:1,
the second plurality of particulates comprises the extender,
the extender comprises corn flour,
the first plurality of particulates and the second plurality of particulates each have an average particle size of about 1 μm to about 150 μm, and
the binder composition comprises about 1 wt % to 9 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
5. The binder composition of claim 1 , wherein:
the filler comprises pecan shell, peanut shell, wheat shell, almond shell, corn husk, or any combination thereof,
the extender comprises corn flour, wheat flour, or a combination thereof, and
the binder composition comprises about 1 wt % to 7 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
6. The binder composition of claim 1 , wherein:
the filler comprises pecan shell, peanut shell, wheat shell, almond shell, corn husk, or any combination thereof, and
the binder composition comprises about 1 wt % to 9 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
7. The binder composition of claim 1 , wherein the phenol-formaldehyde resole resin has a weight average molecular weight ranging from 2,500 Daltons to about 8,000 Daltons, and wherein the binder composition has a fusion diameter of 15 mm to 35 mm.
8. The binder composition of claim 1 , wherein:
the second plurality of particulates comprises the extender, and
the binder composition comprises about 1 wt % to 9 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
9. The binder composition of claim 1 , wherein:
the filler comprises pecan shell, peanut shell, wheat shell, almond shell, corn husk, or any combination thereof, and
the binder composition comprises 1 wt % to 7 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
10. The binder composition of claim 1 , wherein:
the binder composition consists essentially of the first plurality of particulates and the second plurality of particulates,
second plurality of particulates comprise the filler, and
the filler comprises pecan shell, peanut shell, wheat shell, almond shell, corn husk, or any combination thereof.
11. The binder composition of claim 1 , wherein the binder composition comprises about 1 wt % to 9 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates, and wherein the second plurality of particulates comprises the filler.
12. The binder composition of claim 1 , wherein:
the phenol-formaldehyde resole resin has a formaldehyde to phenol molar ratio ranging from about 2:1 to about 2.65:1 and a weight average molecular weight of 3,000 Daltons to about 8,000 Daltons,
the second plurality of particulates comprises at least one of corn flour as the extender or pecan shell, peanut shell, or a combination thereof as the filler,
the first plurality of particulates and the second plurality of particulates each have an average particle size of about 1 μm to about 30 μm, and
the binder composition comprises about 1 wt % to 9 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
13. A binder composition for making composite lignocellulose products, comprising:
a mixture comprising a first plurality of particulates and a second plurality of particulates, wherein:
the first plurality of particulates comprises a phenol-formaldehyde resole resin having a weight average molecular weight of about 2,000 Daltons to about 8,000 Daltons,
the second plurality of particulates comprises a filler, an extender, or a combination thereof,
the first plurality of particulates is free of the filler and the extender,
the second plurality of particulates is free of the phenol-formaldehyde resole resin,
the second plurality of particulates comprises the extender, and
the extender comprises a soy flour that comprises:
soy protein modified with compounds having the formula R 2 NC(═X)NR 2 , wherein each R is individually selected from the group consisting of H, a C 1 -C 4 saturated group, and a C 1 -C 4 unsaturated group, and X is selected from the group consisting of O, NH, and S;
soy protein modified with saturated and unsaturated alkali metal C 8 -C 22 sulfate and sulfonate salts; or
any combination thereof.
14. A method for making a binder composition, comprising:
removing at least a portion of a liquid medium combined with a phenol-formaldehyde resole resin to produce a first plurality of particulates; and
combining the first plurality of particulates with a second plurality of particulates to produce a binder composition, wherein;
the binder composition comprises about 1 wt % to 10 wt % of the second plurality of particulates, based on a combined weight of the first plurality of particulates and the second plurality of particulates,
the second plurality of particulates comprises one or more fillers, one or more extenders, or a combination thereof,
the one or more filler comprise a nut shell, a seed shell, a fruit pit, or any combination thereof, and
the one or more extenders comprise corn flour, soy flour, wheat flour, or any combination thereof.
15. A method for making a binder composition, comprising:
spray-drying an aerated liquid mixture comprising a phenol-formaldehyde resole resin to produce a first plurality of particulates, wherein the phenol-formaldehyde resole resin has a weight average molecular weight of 2,000 Daltons to about 8,000 Daltons; and
combining the first plurality of particulates with a second plurality of particulates to produce a binder composition, wherein:
the second plurality of particulates comprises one or more fillers, one or more extenders, or a combination thereof,
the one or more fillers comprise a nut shell, a seed shell, a fruit pit, or any combination thereof, and
the one or more extenders comprise corn flour, soy flour, wheat flour, or any combination thereof, and
the binder composition comprises about 1 wt % to 10 wt % of the second plurality of particulates, based on a combined weight of the first plurality of particulates and the second plurality of particulates.
16. A method for making a binder composition, comprising:
spray-drying an aerated liquid mixture comprising a phenol-formaldehyde resole resin to produce a first plurality of particulates, wherein the phenol-formaldehyde resole resin has a formaldehyde to phenol molar ratio ranging from about 2:1 to about 2.65:1; and
combining the first plurality of particulates with a second plurality of particulates to produce a binder composition, wherein the second plurality of particulates comprises one or more fillers, one or more extenders, or a combination thereof, wherein the filler, if present, comprises pecan shells, wherein the extender, if present, comprises corn flour, and wherein the binder composition about 1 wt % to 10 wt % of the second plurality of particulates, based on the combined weight of the first plurality of particulates and the second plurality of particulates.
17. A method for making a composite product, comprising:
contacting a plurality of lignocellulose substrates with a particulate binder composition, the particulate binder composition comprising a mixture of a first plurality of particulates comprising a phenol-formaldehyde resole resin and a second plurality of particulates comprising a filler, an extender, or a combination thereof, wherein:
the first plurality of particulates is free of the filler and the extender,
the second plurality of particulates is free of the phenol-formaldehyde resole resin
the filler comprises a nut shell, a seed shell, a fruit pit, or any combination thereof,
the extender comprises corn flour, soy flour, wheat flour, or any combination thereof, and
the binder composition comprises about 1 wt % to 10 wt % of the second plurality of particulates, based on a combined weight of the first plurality of particulates and the second plurality of particulates; and
at least partially curing the binder composition to produce a composite product.
18. The composite product of claim 17 , wherein an amount of the binder composition is from about 0.5 wt % to about 5.5 wt %, based on a dry weight of the plurality of lignocellulose substrates.
19. The composite product of claim 18 , wherein the phenol-formaldehyde resole resin has a weight average molecular weight of 2,000 Daltons to about 8,000 Daltons and a formaldehyde to phenol molar ratio of about 1.9:1 to about 2.5:1, and wherein the first plurality of particulates and the second plurality of particulates each have an average particle size of about 1 μm to about 150 μm.
20. A method for making a particulate binder composition, comprising:
synthesizing a liquid phenol-formaldehyde resole resin having weight average molecular weight of 2,000 Daltons to about 8,000 Daltons;
agitating the liquid phenol-formaldehyde resole resin to produce an aerated phenol-formaldehyde resole resin;
spray-drying the aerated phenol-formaldehyde resole resin to produce a spray-dried particulate phenol-formaldehyde resole resin; and
combining the spray-dried particulate phenol-formaldehyde resole resin with one or more fillers, one or more extenders or a combination thereof to produce a binder composition, wherein:
the one or more fillers, the one or more extenders, or the combination thereof is in particulate form,
the filler comprises a nut shell, a seed shell, a fruit pit, or any combination thereof,
the extender comprises corn flour, soy flour, wheat flour, or any combination thereof, and
the binder composition comprises about 1 wt % to 10 wt % of the second plurality of particulates, based on a combined weight of the first plurality of particulates and the second plurality of particulates.