IP Library › Granted Patent US 7,671,118
Granted Patent B2
US 7,671,118 · App. 11/391,836 · Granted Mar 2, 2010

Stabilizer system for stabilizing halogen-containing polymers

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Quick Facts
Patent No.
US 7,671,118
App. No.
11/391,836
Granted
Mar 2, 2010
Kind
B2
Abstract

A stabilizer system for stabilizing halogen-containing polymers comprising a perchlorate salt and at least one indole compound, a composition comprising such a stabilizer system, process for stabilizing a chlorine-containing polymer using such a stabilizer system, and an article manufacture comprising PVC stabilized by such a stabilizer system.

Claims (16)

1. A milled sheet of polyvinyl chloride comprising:

0.1 phr of sodium perchlorate salt; and

0.2 phr of 2-phenylindole.

2. The sheet of claim 1 , further comprising one or more polyols and disaccharide alcohols, glycidyl compounds, hydrotalcites, alkali metal/alkaline earth metal aluminosilicates, alkali metal/alkaline earth metal hydroxides, alkaline earth metal oxides or alkaline earth metal (hydrogen) carbonates or metal carboxylates, phosphites, plasticizers, antioxidants, fillers, pigments, light stabilizers, lubricants and epoxidized fatty esters.

3. The sheet of claim 1 , further comprising 0.4 phr of an ester lubricant.

4. The sheet of claim 1 , further comprising 1.0 phr of a sodium zeolite.

5. The sheet of claim 1 , further comprising 1.0 phr of a bisphenol A diglycidyl ether.

6. The sheet of claim 1 , wherein the sodium perchlorate salt is a sodium perchlorate monohydrate solution.

7. A method of stabilizing a milled sheet of polyvinyl chloride comprising adding to the milled sheet a stabilizing composition comprising:

0.1 phr of sodium perchlorate salt; and

0.2 phr of 2-phenylindole.

8. The method of claim 7 , further comprising one or more polyols and disaccharide alcohols, glycidyl compounds, hydrotalcites, alkali metal/alkaline earth metal aluminosilicates, alkali metal/alkaline earth metal hydroxides, alkaline earth metal oxides or alkaline earth metal (hydrogen) carbonates or metal carboxylates, phosphites, plasticizers, antioxidants, fillers, pigments, light stabilizers, lubricants and epoxidized fatty esters.

9. The method of claim 7 , further comprising 0.4 phr of an ester lubricant.

10. The method of claim 7 , further comprising 1.0 phr of a sodium zeolite.

11. The method of claim 7 , further comprising 1.0 phr of a bisphenol A diglycidyl ether.

12. The method of claim 7 , wherein the sodium perchlorate salt is a sodium perchlorate monohydrate solution.

Assignments (1)
CHANGE OF NAME Recorded Nov 3, 2006
From: CROMPTON VINYL ADDITIVES GMBH
To: CHEMTURA VINYL ADDITIVES GMBH
Reel/Frame 018686/0008 →