초록 ▼

A method for making lignin-amines is provided. The method comprises providing a lignin; then modifying the lignin with modifier to create a modified lignin; and then reacting the modified lignin with an amine to form a lignin-amine. Suitable modifiers comprise acrylates. A method for coagulating sus

A method for making lignin-amines is provided. The method comprises providing a lignin; then modifying the lignin with modifier to create a modified lignin; and then reacting the modified lignin with an amine to form a lignin-amine. Suitable modifiers comprise acrylates. A method for coagulating suspended materials in a water stream is also disclosed. The method comprises providing a water stream and contacting the suspended materials in the water stream with at least one lignin-amine.

대표청구항 ▼

1. Coagulant composition comprising a lignin-amine having the formula: where R1, R2, R3 may be the same or different and selected from the group consisting of hydrogen, methyls, ethyls, alkyls, hydroxyl-substituted alkyls, and alkoxy-substituted alkyls of 1 to 20 carbon atoms; the alkyl groups may b

1. Coagulant composition comprising a lignin-amine having the formula: where R1, R2, R3 may be the same or different and selected from the group consisting of hydrogen, methyls, ethyls, alkyls, hydroxyl-substituted alkyls, and alkoxy-substituted alkyls of 1 to 20 carbon atoms; the alkyl groups may be straight or branched alkyl groups or a cycloalkyl ring, whereby said composition, when added to a water stream, coagulates suspended particles therein. 2. Coagulant composition comprising a lignin-amine having the formula: where R1, R2, R3 may be the same or different and selected from the group consisting of hydrogen, methyls, ethyls, alkyls, hydroxyl-substituted alkyls, and alkoxy-substituted alkyls of 1 to 20 carbon atoms; the alkyl groups may be straight or branched alkyl groups or a cycloalkyl ring, whereby said composition when added to a water stream coagulates suspended particles therein. 3. Coagulant composition as recited in claim 1 wherein said composition is water soluble. 4. Coagulant composition as recited in claim 3 wherein said composition is present in an aqueous solution including a salt. 5. Coagulant composition as recited in claim 4 wherein said salt is a hydrochloride salt. 6. Coagulant composition as recited in claim 4 wherein said aqueous solution has a pH of about 7 or less. 7. Coagulant composition as recited in claim 1 wherein R1=H and R2 and R3 are both ethyl. 8. Coagulant composition as recited in claim 1 wherein said composition is devoid of formaldehyde.