IP Library › Granted Patent US 6,958,091
Granted Patent B1
US 6,958,091 · App. 10/935,003 · Granted Oct 25, 2005

Surface-treated pigments

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Quick Facts
Patent No.
US 6,958,091
App. No.
10/935,003
Granted
Oct 25, 2005
Kind
B1
Abstract

Inorganic pigments treated with at least one amide of a fatty acid and an aliphatic amine possess improved processibility and dispersibility in thermoplastic materials, and impart improved properties to thermoplastic compositions containing said surface-treated pigments.

Claims (4)

1. An inorganic pigment having deposited on its surface at least one amide of a fatty acid and an aliphatic amine, wherein the one or more amides are deposited on the pigment's surface in an amount collectively of from about 0.1 to about 5 percent of the weight of the pigment.

2. A pigment as defined in claim 1 , wherein the one or more amides collectively comprise from about 0.25 to about 2.5 percent of the weight of the pigment.

3. A pigment as defined in claim 2 , wherein the one or more amides comprise from about 0.5 to about 1.5 percent of the weight of the pigment.

4. A pigment as defined in claim 3 , wherein the inorganic pigment including the surface treatment is titanium dioxide.

Assignments (10)
RELEASE OF SECURITY INTEREST Recorded Apr 7, 2022
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: TRONOX LLC
Reel/Frame 059629/0581 →
ASSIGNMENT OF SECURITY INTEREST IN PATENT COLLATERAL RECORDED AT REEL/FRAME 044100/0339 Recorded Mar 12, 2021
From: BANK OF AMERICA, N.A.
To: HSBC BANK USA, NATIONAL ASSOCIATION, AS THE SUCCESSOR ADMINISTRATIVE AGENT AND COLLATERAL AGENT
Reel/Frame 055578/0880 →
RELEASE OF SECURITY INTEREST Recorded Mar 12, 2021
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: TRONOX LLC
Reel/Frame 055583/0001 →
SECURITY INTEREST Recorded May 1, 2020
From: TRONOX LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 052554/0529 →
PATENT SECURITY AGREEMENT Recorded Oct 2, 2017
From: TRONOX LLC
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 044100/0339 →
RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY COLLATERAL AT REEL/FRAME NOS. 027682/0086 AND 030047/0422 Recorded Sep 26, 2017
From: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
To: TRONOX LLC
Reel/Frame 044018/0893 →
SECURITY INTEREST Recorded Sep 25, 2017
From: TRONOX LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 043993/0340 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Sep 25, 2017
From: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
To: TRONOX LLC; TRONOX WORLDWIDE LLC
Reel/Frame 043993/0306 →
PATENT SECURITY AGREEMENT Recorded Jul 18, 2012
From: TRONOX LLC; TRONOX WORLDWIDE LLC
To: UBS AG, STAMFORD BRANCH
Reel/Frame 028582/0669 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jul 12, 2012
From: WELLS FARGO CAPITAL FINANCE, LLC
To: TRONOX LLC; TRONOX WORLDWIDE LLC
Reel/Frame 028535/0362 →