IP Library › Granted Patent US 6,916,900
Granted Patent B1
US 6,916,900 · App. 10/818,114 · Granted Jul 12, 2005

Catalytic effects of transition metal ions in the synthesis of polyaniline grafted lignosulfonic acid

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Quick Facts
Patent No.
US 6,916,900
App. No.
10/818,114
Granted
Jul 12, 2005
Kind
B1
Abstract

A method of making polyaniline grafted lignosulfonic acid is disclosed. The method comprises mixing of aniline and a lignosulfonate in the presence of a transition metal salt.

Claims (7)

1. A method of making polyaniline grafted lignosulfonic acid, comprising the mixing of aniline and a lignosulfonate in the presence of a transition metal salt, wherein the transition metal of the salt is silver.

2. The method of claim 1 , further comprising the step of mixing a sulfonic acid to dope the polyaniline grafted lignosulfonic acid, wherein the lignosulfonate is dissolved in the sulfonic acid.

3. The method of claim 2 , wherein the sulfonic acid is methanesulfonic acid or p-toluenesulfonic acid.

4. The method of claim 1 , wherein the lignosulfonate is sodium lignosulfonate.

5. A method of making polyaniline grafted lignosulfonic acid, comprising the mixing of aniline and a lignosulfonate in the presence of a transition metal salt, wherein the formation of metallic silver is a by-product.

6. The method of claim 1 , further comprising addition of persulfate to lignosulfonate, aniline, and transition metal salt.

7. The method of claim 6 , wherein the transition metal salt and the persulfate were in a molar ratio of 1:10.

Assignments (10)
RELEASE OF SECURITY INTERESTS IN PATENTS RECORDED AT REEL 027522, FRAME 0154. Recorded Jun 24, 2025
From: WELLS FARGO CAPITAL FINANCE, LLC, AS ADMINISTRATIVE AGENT
To: AVIENT CORPORATION (F/K/A POLYONE CORPORATION); GSDI SPECIALTY DISPERSIONS, INC. (F/K/A GAYSON SILICON DISPERSIONS, INC.); THE COLORMATRIX CORPORATION; COLORMATRIX HOLDINGS, INC.
Reel/Frame 071711/0354 →
CHANGE OF NAME Recorded Jul 13, 2020
From: POLYONE CORPORATION
To: AVIENT CORPORATION
Reel/Frame 053197/0141 →
SECURITY AGREEMENT Recorded Nov 19, 2015
From: POLYONE CORPORATION; COLORMATRIX GROUP, INC.; COLORMATRIX HOLDINGS, INC.; THE COLORMATRIX CORPORATION; GAYSON SILICONE DISPERSIONS, INC.; POLYONE DESIGNED STRUCTURES AND SOLUTIONS LLC
To: CITIBANK, N.A,, AS ADMINISTRATIVE AGENT
Reel/Frame 037146/0724 →
RELEASE (REEL 027456 / FRAME 0779) Recorded Nov 18, 2015
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
To: POLYONE CORPORATION
Reel/Frame 037129/0199 →
RELEASE OF SECURITY INTEREST RECORDED AT REEL 027450 FRAME 0907 Recorded Feb 28, 2013
From: BANK OF AMERICA, N.A., AS AGENT
To: POLYONE CORPORATION
Reel/Frame 029900/0240 →
SECURITY AGREEMENT Recorded Dec 29, 2011
From: POLYONE CORPORATION
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 027456/0779 →
SECURITY AGREEMENT Recorded Dec 28, 2011
From: POLYONE CORPORATION
To: BANK OF AMERICA, N.A.
Reel/Frame 027450/0907 →
SECURITY AGREEMENT Recorded Dec 23, 2011
From: POLYONE CORPORATION; GAYSON SILICONE DISPERSIONS, INC.; COLORMATRIX CORPORATION, THE; COLORMATRIX HOLDINGS, INC.
To: WELLS FARGO CAPITAL FINANCE, LLC
Reel/Frame 027522/0154 →
RELEASE OF SECURITY INTEREST Recorded Feb 23, 2007
From: U.S. BANK TRUST NATIONAL ASSOCIATION; PATRICK J. CROWLEY, TRUSTEE
To: POLYONE CORPORATION
Reel/Frame 018923/0081 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 15, 2005
From: GEO TECH CHEMICAL COMPANY LLC
To: POLYONE CORPORATION
Reel/Frame 016522/0750 →