Composite bodies having a polyacetal portion and a thermoplastic vulcanized elastomer portion, processes for making the same, articles including such bodies and uses therefor

US7858202B2 · kind B2 · utility

Assignee

• Ticona LLC · US

Inventors

• Marco Prigandt · Kahl am Main, DE
• Frank Reil · Seeheim-Jugenheim, DE
• Ursula Ziegler · Hochheim, DE
• Werner Aumüller · Unteraltenbernheim, DE
• Uwe Stenglin · Creglingen, DE
• Bernhard Ulmer · Uffenheim, DE

Key dates

• Filing date: Sep 28, 2005
• Grant date: Dec 28, 2010
• Expiry date: Jul 23, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31942
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Composite bodies, processes for making them, and their uses are disclosed, the composite bodies comprising a polyacetal portion and a modified thermoplastic vulcanizate portion bonded together, wherein the modified thermoplastic vulcanizate portion comprises a modified thermoplastic vulcanizate elastomer having a hardness of 30 to 90 Shore A and wherein the modified thermoplastic vulcanizate elastomer comprises: (a) 2 to 75% by weight of an at least partially crosslinked ethylene-propylene-diene rubber in from 1 to 50% by weight of a polyolefinic matrix further comprising 0.05 to 10% by weight of an ingredient selected from the group consisting of stabilizers, crosslinking aids, and mixtures thereof; (b) 1 to 30% by weight of a compatibilizer; and (c) 10 to 70% by weight of a non-olefinic thermoplastic material, all percentages by weight based on a total weight of the modified thermoplastic vulcanizate elastomer.