Preparing sterile articles from polymers containing a stabilizer based on a poly(oxyalkylene)

US6348517B1 · kind B1 · utility

Assignee

• Oxy Services, Inc. · US

Inventors

• Qi Wang · Chesterfield, US
• Sandor Nagy · Naperville, US

Key dates

• Filing date: Sep 1, 2000
• Grant date: Feb 19, 2002
• Expiry date: Sep 1, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L71/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method of preparing a sterile article is disclosed. A polymer having a halogen-containing repeating unit is prepared that contains about 0.005 to about 65 phr of a stabilizer having the general formula TGOT′, wherein each T is independently selected from R—, R—CO—, —P(R)2, —P (OR)2, —Si(R)3, OR—Si (OR)3, T′ is T or A [GOT]n, each A is independently selected from LS—Sn(R)3−q (SLJ)q when n is 0, from CO, E, CO—E—CO, Si(R)2, OR—Si (OR)3, (Si(R)2G)r, (CO—E—CO—G)r, (CO—G)r, or (E—G)r when n is 1, and from P, PO, and trimellitate when n is 2, Y is —SLJ, —SLOR, —OLJ, —OLR, —S(CH2)p—J, —S(CH2)pR, OLCO—J, or OLCOOR, G is (O—CH2—R′CH)m, J is O—(CH2CR′HO)T, L is CO(CH2)p, each R is independently selected from R′, aralkyl from C6 to C12, and alkaryl from C6 to C12, each R′ is independently selected from hydrogen, alkyl from C1 to C12, aryl from C6 to C12, E is alkylene from C1 to C12, alkyarylene from C6 to C12, arylene from C6 to C12, m is 1 to 20, n is 0 to 2, p is 0 to 10, q is 0 to 3, an…