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US 10,125,295 B2Granted
Protein-containing adhesives, and manufacture and use thereof
AssigneeEvertree
InventorsAnthony A. Parker, Joseph J. Marcinko
Life of this patent
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Abstract
The invention provides protein adhesives and methods of making and using such adhesives. One type of protein adhesive described herein contains lignin and ground plant meal or an isolated polypeptide composition obtained from plant biomass. Other types of protein adhesives described herein contain a plant protein composition and either a hydroxyaromatic/aldehyde, urea/aldehyde, or amine/aldehyde component.
Claims29
A hydroxyaromatic-aldehyde adhesive composition comprising:
- (a) a hydroxyaromatic compound selected from the group consisting of phenol, alkyl-substituted phenol, cycloalkyl-substituted phenol, and halogen-substituted phenol;
- (b) an aldehyde source selected from the group consisting of formaldehyde, acetaldehyde, glyoxal, methyl glyoxal, and glutaraldehyde;
- (c) a reactive prepolymer that is an organic polyisocyanate;
- and
- (d) a meal selected from ground castor meal, ground canola meal, ground rapeseed meal, ground sunflower meal, or a combination thereof, each that disperses the reactive prepolymer in an aqueous medium.
2 more elements
A phenol-formaldehyde-plant protein adhesive composition comprising:
- (a) phenol;
- (b) formaldehyde;
- (c) a reactive prepolymer that is an organic polyisocyanate;
- and
- (d) ground castor meal, ground canola meal, or ground rapeseed meal, each that disperses the reactive prepolymer in an aqueous medium;
- wherein the ratio of (i) weight percent of reactive prepolymer in the adhesive composition to (ii) the sum of the weight percent of phenol and formaldehyde in the adhesive composition is greater than 1:1.
3 more elements
A phenol-formaldehyde-plant protein adhesive composition comprising:
- (a) phenol and formaldehyde that together constitute from about 0.5% w/w to about 10% w/w of the adhesive composition;
- (b) a reactive prepolymer that is polymeric diphenylmethane diisocyanate in an amount ranging from about 10% w/w to about 30% w/w of the adhesive composition;
- (c) a meal selected from ground canola meal, ground rapeseed meal, or a combination thereof;
- wherein the meal is present in an amount ranging from about 10% w/w to about 30% w/w of the adhesive composition and disperses the reactive prepolymer in an aqueous medium;
- and
- (d) water in an amount ranging from about 45% w/w to about 75% w/w of the adhesive composition.
3 more elements
Dependencies are inferred from the claim text.