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US 7,842,731 B2Granted
Wax emulsion for manufacture of composite boards
AssigneeHenry Company, LLC
InventorsJames Eckert, John Burns
Life of this patent
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Abstract
Wax emulsions useful for manufacture of a composite board are described which include water; a lignosulfonic acid or a salt thereof; and at least one wax selected from the group consisting of slack wax, paraffin wax and montan wax. Such emulsions are useful in composite board formulations and methods for making composite boards such as oriented strand boards.
Claims17
A wax emulsion for manufacture of a composite board, comprising
- (a) water;
- (b) a lignosulfonic acid or a salt thereof;
- (c) at least one wax selected from the group consisting of slack wax and montan wax, wherein the slack wax contains up to 20% oil by weight;
- and
- (d) polyvinyl alcohol.
2 more elements
A wax emulsion for manufacture of a composite board, comprising
- (a) water;
- (b) a lignosulfonic acid or a salt thereof;
- (c) potassium hydroxide;
- (d) polyvinyl alcohol;
- and
- (e) at least one wax selected from the group consisting of slack wax and montan wax wherein the slack wax contains up to 20% oil by weight.
3 more elements
A wax emulsion for manufacture of a composite board, comprising:
- (a) about 30% to about 60% by weight of water;
- (b) about 0.1% to about 5% by weight of a lignosulfonic acid or a salt thereof;
- (c) about 0% to about 1% by weight of potassium hydroxide;
- (d) about 40% to about 50% by weight of slack wax wherein the slack wax contains up to 20% oil by weight;
- and
- (e) about 0.1% to about 10% montan wax.
3 more elements
A formulation for forming a composite board, comprising:
- (a) a lignocellulosic material;
- (b) a wax emulsion comprising water;
- a lignosulfonic acid or a salt thereof;
- and at least one wax selected from the group consisting of slack wax and montan wax wherein the slack wax contains up to 20% oil by weight;
- (c) at least one resin selected from the group consisting of urea-formaldehyde, phenol-formaldehyde, melamine-urea-formaldehyde, melamine-formaldehyde resins, polymeric isocyanates and combinations, copolymers and derivatives thereof;
- and
- (d) polyvinyl alcohol.
4 more elements
Dependencies are inferred from the claim text.