Modified lignin surfactants

• US 3,865,803 A
• Filed: 09/27/1973
• Issued: 02/11/1975
• Est. Priority Date: 05/25/1972
• Status: Expired due to Term

• Current Assignee: Sten I. Falkehag
• Original Assignee: Sten I. Falkehag
• Inventors: Falkehag, Sten I.
• Primary Examiner(s): Gotts, Lewis
• Assistant Examiner(s): Phillips, D. R.
• Application Number:
  US05/401,530
• Time in Patent Office: 502 Days
• Field of Search: 260/124R
• US Class Current: 527/400
• CPC Class Codes: C07F 9/38 Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
• CPC Class Codes: C08H 6/00 Macromolecular compounds derived from lignin, e.g. tannins, humic acids
• CPC Class Codes: C09K 8/035 Organic additives

Abstract

The improved lignin surfactant of this invention is a lignin modified by reaction with from about 1 to 20 moles, preferably from 2 to 10 moles, per 1000 grams of lignin, of an agent of the type X(CH2)nY, wherein X is a halogen, an activated double bond, an epoxide ring or a halohydrin, Y is a property group such as sulfonate, phosphonate, hydroxyl, sulfide or secondary or tertiary amine, n is an integer from 1 to 5, to at least partially block the acidic hydroxyl groups of the lignin.

Claims

1. LIGNIN ADDUCTS COMPRISING THE REACTION PRODUCT OF LIGNIN AND FROM ABOUT 1 TO 20 MOLES PER 1000 GRAMS OF SAID LIGNIN OF AN AGENT OF THE FORMULA

2. Alkali lignin adducts comprising the reaction product of an alkali lignin and from about 1 to 20 moles per 1,000 grams of said alkali lignin of an agent of the formula X (CH2)nY wherein X is a halogen, a halohydrin group, an activated double bond or an epoxide group, Y is a sulfonate, phosphonate, hydroxyl, sulfide or an amine of the types N R1 R2 or N R1 R2 R3 wherein R is hydrogen or an alkyl group having up to 18 carbon atoms, and n is an integer from 1 to 5, to give lignin adducts having blocked acidic hydroxyl groups.

3. The products of claim 2 wherein said alkali lignin is a sulfonated alkali lignin.

4. The products of claim 3 wherein said sulfonated alkali lignin is reacted with from 2 to 10 moles of said agent.

5. The products of claim 2 wherein said alkali lignin is reacted with from 2 to 10 moles of said agent.