IP Library › Granted Patent US 7,037,976
Granted Patent B2
US 7,037,976 · App. 10/148,442 · Granted May 2, 2006

Free flowing powder

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Quick Facts
Patent No.
US 7,037,976
App. No.
10/148,442
Granted
May 2, 2006
Kind
B2
Abstract

The present invention relates to a free flowing powder composition with a particle size at most 800 μm comprising: (a) 100 parts by weight of one or more styrenic block copolymers, at least one of which being a block copolymer (a1) comprising at least one block S having a glass transition temperature Tg above 25° C., which contains polymerized units of a vinylaromatic monomer and at least one elastomeric block B/S having a Tg below 25° C., which contains polymerized units of both a vinylaromatic monomer and a conjugated diene in random sequence, wherein the phase volume ratio of block S to block B/S is chosen so that the amount of the rigid phase in the total block copolymer is from 1 to 40% by volume and wherein the amount of the conjugated diene is less than 50% by weight on the whole of the copolymer; optionally (b) 0 to 200 parts by weight of plasticizing oil; optionally (c) 0 to 200 parts by weight of a compatibilizing resin; and optionally (d) a dusting agent in an amount of from 0 to 10% by weight based on total weight of composition. It also relates to a process for the preparation thereof and to homogeneous layers derived therefrom.

Claims (3)

1. A free flowing powder composition with a particle size of less than or equal to 800 μm consisting essentially of:

(a) 100 parts by weight of one or more styrenic block copolymers, at least one of which is a block copolymer (a1) comprising: at least one block S having a glass transition temperature Tg above 25° C., which block S contains polymerized units of a vinylaromatic monomer and forms the rigid phase (c1); and at least one elastomeric block B/S having a Tg below 25° C., which elastomeric block B/S contains polymerized units of both a vinylaromatic monomer and a conjugated diene in random sequence and forms the soft phase (c2), wherein the phase volume ratio of block S to block B/S is chosen so that the amount of the rigid phase in the total block copolymer is from 1 to 40% by volume and wherein the amount of the conjugated diene is less than 50% by weight on the whole of the copolymer; and

(b) no plasticizing oil.

Assignments (10)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jul 24, 2024
From: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
To: KRATON CHEMICAL, LLC; KRATON CORPORATION
Reel/Frame 068671/0836 →
CORRECTIVE ASSIGNMENT TO CORRECT THE PATENT NO. 8837224 TO PATENT NO. 7737224 PREVIOUSLY RECORDED AT REEL: 037448 FRAME: 0453. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Jun 11, 2022
From: KRATON POLYMERS U.S. LLC; ARIZONA CHEMICAL COMPANY, LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 060344/0919 →
SECURITY INTEREST Recorded Mar 18, 2022
From: KRATON CHEMICAL, LLC; KRATON POLYMERS LLC; KRATON POLYMERS U.S. LLC
To: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
Reel/Frame 059525/0804 →
SECURITY INTEREST Recorded Mar 18, 2022
From: KRATON CHEMICAL, LLC; KRATON POLYMERS LLC; KRATON POLYMERS U.S. LLC
To: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
Reel/Frame 059864/0455 →
RELEASE OF SECURITY INTEREST Recorded Mar 16, 2022
From: BANK OF AMERICA, N.A.
To: KRATON POLYMERS U.S. LLC; KRATON CHEMICAL, LLC F/K/A ARIZONA CHEMICAL COMPANY, LLC; KRATON POLYMERS LLC; KRATON CORPORATION; KRATON CHEMICAL B.V.
Reel/Frame 059910/0017 →
RELEASE OF SECURITY INTEREST Recorded Mar 15, 2022
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: KRATON POLYMERS U.S. LLC
Reel/Frame 059366/0611 →
SECURITY INTEREST Recorded Apr 16, 2020
From: KRATON POLYMERS U.S. LLC; KRATON CHEMICAL, LLC F/K/A ARIZONA CHEMICAL COMPANY, LLC; KRATON POLYMERS LLC; KRATON CORPORATION
To: BANK OF AMERICA, N.A.
Reel/Frame 053020/0101 →
PATENT SECURITY AGREEMENT Recorded Jan 7, 2016
From: KRATON POLYMERS U.S. LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 037457/0843 →
CORRECTIVE ASSIGNMENT TO CORRECT THE PATENT NUMBER 8837224 TO PATENT NUMBER 7737224 PREVIOUSLY RECORDED AT REEL: 037448 FRAME: 0453. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY INTEREST. Recorded Jan 6, 2016
From: KRATON POLYMERS U.S. LLC; ARIZONA CHEMICAL COMPANY, LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 037448/0453 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT PATENT NUMBER 7720798 AND REPLACE WITH PATENT NUMBER 7220798 PREVIOUSLY RECORDED ON REEL 025845 FRAME 0795. ASSIGNOR(S) HEREBY CONFIRMS THE RELEASE BY SECURED PARTY. Recorded Dec 16, 2015
From: USB AG, STAMFORD BRANCH
To: KRATON POLYMERS U.S. LLC
Reel/Frame 037312/0070 →