IP Library › Granted Patent US 7,629,412
Granted Patent B2
US 7,629,412 · App. 11/450,676 · Granted Dec 8, 2009

Rigid PVC blend composition

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Quick Facts
Patent No.
US 7,629,412
App. No.
11/450,676
Granted
Dec 8, 2009
Kind
B2
Abstract

A composition is disclosed that comprises rigid PVC and from about 0.1 to about 10 phr of an EPM copolymer. The compositions optionally also include one or several additives selected from lubricants, impact modifiers, process aids, fusion promoters, heat stabilizers, co-stabilizers, fillers, pigments, antioxidants, UV absorbers, antistats, metal release agents, and plasticizers. The EPM is particularly useful as a PVC gloss reducing agent and additive enhancing agent for such polymer additives, particularly lubricants, heat stabilizers, UV absorbers, and pigments.

Claims (13)

1. A composition comprising

rigid PVC;

at least one heat stabilizer selected from the group consisting of organotin mercaptides, organotin carboxylates, mixed metal stabilizers, lead stabilizers, and heavy metal-free stabilizers; and

from about 0.1 to about 10 phr of a liquid ethylene/propylene (EPM) copolymer.

2. The composition of claim 1 wherein the ethylene to propylene ratio in the liquid EPM copolymer is in the range of from about 85:15 to about 25:75 and the molecular weight is in the range of from about 500 to about 200,000 as determined by GPC.

3. The composition of claim 1 further comprising at least one additive selected from the group consisting of lubricants, impact modifiers, process aids, fusion promoters, co-stabilizers, fillers, pigments, antioxidants, UV absorbers, antistats, metal release agents, and plasticizers.

4. The composition of claim 3 wherein at least one lubricant selected from the group consisting of paraffin waxes, esters of organic acids, and calcium stearate is present.

5. The composition of claim 3 wherein at least one UV absorber is present.

6. The composition of claim 5 wherein the UV absorber is titanium dioxide.

7. The composition of claim 3 wherein at least one pigment is present.

8. A method for reducing gloss in rigid PVC comprising:

providing an admixture of PVC and at least one heat stabilizer selected from the group consisting of organotin mercaptides, organotin carboxylates, mixed metal stabilizers, lead stabilizers, and heavy metal-free stabilizers;

adding to said admixture from about 0.1 about 10 phr of a liquid ethylene/propylene (EPM) copolymer.

Assignments (6)
INTELLECTUAL PROPERTY SECURITY RELEASE AGREEMENT Recorded Mar 21, 2011
From: CITIBANK, N.A.
To: CHEMTURA CORPORATION; A & M CLEANING PRODUCTS, LLC; ASCK, INC; BIOLAB COMPANY STORE, LLC; AQUA CLEAR INDUSTRIES, LLC; ASEPSIS, INC.; BIOLAB TEXTILES ADDITIVES, LLC; BIOLAB, INC.; CROMPTON COLORS INCORPORATED; CROMPTON MONOCHEM, INC.; CNK CHEMICAL REALTY CORPORATION; CROMPTON HOLDING CORPORATION; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GT SEED TREATMENT, INC.; ISCI, INC; GREAT LAKES CHEMICAL GLOBAL, INC.; HOMECARE LABS, INC.; KEM MANUFACTURING CORPORATION; LAUREL INDUSTRIES HOLDINGS, INC.; NAUGATUCK TREATMENT COMPANY; UNIROYAL CHEMICAL COMPANY LIMITED (DELAWARE); MONOCHEM, INC.; RECREATIONAL WATER PRODUCTS, INC.; WEBER CITY ROAD LLC; WRL OF INDIANA, INC.; BIOLAB FRANCHISE COMPANY, LLC
Reel/Frame 026039/0142 →
RELEASE OF SECURITY INTEREST Recorded May 12, 2010
From: CITIBANK, N.A.
To: CHEMTURA CORPORATION (AND ALL GRANTORS IDENTIFIED IN THE IP SECURITY AGREEMENTS DATED 3/18/09 AND 2/12/10)
Reel/Frame 024369/0172 →
SECURITY AGREEMENT Recorded May 12, 2010
From: GALATA CHEMICALS HOLDING COMPANY, LLC; GALATA CHEMICALS, LLC
To: WACHOVIA CAPITAL FINANCE CORPORATION (NEW ENGLAND)
Reel/Frame 024369/0232 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 6, 2010
From: CHEMTURA CORPORATION
To: GALATA CHEMICALS, LLC
Reel/Frame 024342/0736 →
AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Feb 22, 2010
From: CHEMTURA CORPORATION; A & M CLEANING PRODUCTS, LLC; AQUA CLEAR INDUSTRIES, LLC; ASCK, INC.; ASEPSIS, INC.; BIOLAB COMPANY STORE, LLC; BIOLAB FRANCHISE COMPANY, LLC; BIOLAB TEXTILE ADDITIVES, LLC; BIO-LAB, INC.; CNK CHEMICAL REALTY CORPORATION; CROMPTON COLORS INCORPORATED; CROMPTON HOLDING CORPORATION; CROMPTON MONOCHEM, INC.; GLCC LAUREL, LLC; GREAT LAKES CHEMICAL CORPORATION; GREAT LAKES CHEMICAL GLOBAL, INC.; GT SEED TREATMENT, INC.; HOMECARE LABS, INC.; ISCI, INC.; KEM MANUFACTURING CORPORATION; LAUREL INDUSTRIES HOLDINGS, INC.; MONOCHEM, INC.; NAUGATUCK TREATMENT COMPANY; RECREATIONAL WATER PRODUCTS, INC.; UNIROYAL CHEMICAL COMPANY LIMITED (DELAWARE); WEBER CITY ROAD LLC; WRL OF INDIANA, INC.
To: CITIBANK, N.A.
Reel/Frame 023998/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 13, 2006
From: FRENKEL, PETER; REED, PERRY M.; FIEDLER, LERRY
To: CHEMTURA CORPORATION
Reel/Frame 017925/0560 →