Manufacturing of nitrogen-containing materials
First Claim
1. A process for producing a nitrogen-containing product, the process comprising:
- (a) combining rubber and a chemical reagent in a hermetically sealed reaction vessel, wherein the chemical reagent is made by combining a fist agent of ammonia, anhydrous ammonia or a combination thereof, and a second agent of chloroalkane, dichloromethane or combination thereof;
(b) heating the contents of the said reaction vessel to a temperature of between about 20-250°
C.
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Accused Products
Abstract
It has been discovered that waste cross-linked polymer materials both synthetic (scrap tire rubber, used polyurethane, and epoxy and phenol resins in discarded printed circuit boards) and natural (wood biomass, keratin, and chitin) can be conveniently depolymerized at slightly elevated temperatures and moderate pressures by the action of a liquid chemical reagent. The proposed inexpensive process results in a substantial to total depolymerization of synthetic polymers and thereby recovers valuable liquid and solid materials. When applied to lignocellulosic biomass, the proposed process, depending on the reaction conditions, either unlocks the lignin-hemicellulose matrix making cellulose more available for fermenting microorganisms or results in carbonization, or coalification of the biomass that may be desirable in terms of sequestering excessive carbon from the Earth'"'"'s biosphere.
32 Citations
16 Claims
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1. A process for producing a nitrogen-containing product, the process comprising:
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(a) combining rubber and a chemical reagent in a hermetically sealed reaction vessel, wherein the chemical reagent is made by combining a fist agent of ammonia, anhydrous ammonia or a combination thereof, and a second agent of chloroalkane, dichloromethane or combination thereof; (b) heating the contents of the said reaction vessel to a temperature of between about 20-250°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process comprising:
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(a) combining rubber and a chemical reagent in a hermetically sealed reaction vessel, wherein the chemical reagent is made by combining a first agent of ammonia, anhydrous ammonia or a combination thereof, and a second agent of chloroalkane, dichloromethane or combination thereof; (b) heating the contents of the said reaction vessel to a temperature of between about 20-250°
C. - View Dependent Claims (13)
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14. A process for producing a nitrogen-containing product produced by the process of:
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(a) making a chemical reagent by combining a first agent of ammonia, anhydrous ammonia or a combination thereof, with a second agent of a chloroalkane, dichloromethane or combination thereof; (b) combining artificial and/or natural cross-linked polymeric material and the chemical reagent in a hermetically sealed reaction vessel; (c) allowing the polymeric material and chemical reagent mixture to remain in the reaction vessel at room temperature for between about 1 to 600 minutes prior to heating; and (d) heating the contents of the said reaction vessel to a temperature of between about 20-250°
C. - View Dependent Claims (15, 16)
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Specification