Terpolymers of ethylene, their preparation, and their use as additives for mineral oil distillates

• US 5,254,652 A
• Filed: 12/23/1991
• Issued: 10/19/1993
• Est. Priority Date: 12/29/1990
• Status: Expired due to Term

• Current Assignee: Clariant GmbH (Clariant AG)
• Original Assignee: Hoechst Aktiengesellschaft (Sanofi )
• Inventors: Reimann, Werner, Feustel, Michael, Hobes, John
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): Cheng, Wu C.
• Application Number:
  US07/813,887
• Time in Patent Office: 666 Days
• Field of Search: 526/331
• US Class Current: 526/331
• CPC Class Codes: C08F 210/02 Ethene
• CPC Class Codes: C08F 218/08 Vinyl acetate
• CPC Class Codes: C08F 218/10 of monocarboxylic acids containing three or more carbon atoms
• CPC Class Codes: C10L 1/1973 mono-carboxylic

Abstract

Terpolymers which are copolymers of ethylene, vinyl acetate, and vinyl neononanoate or vinyl neodecanoate, a process for their preparation, and a method of their use as additives for mineral oil distillates.

Claims

1. A terpolymer comprising ethylene units, 5% to 35% by weight of vinyl acetate units, and 1% to 25% by weight of vinyl neononanoate or vinyl neodecanoate units, both based on said terpolymer, said terpolymer having a number average molecular mass (M_n) of 500 to 5,000 g/mol.

2. The terpolymer of claim 1 wherein said molecular mass is 1,000 to 3,000 g/mol.

3. The terpolymer of claim 1 having a melt viscosity at 140°

C. of 20 to 1,000 MPa.s.

4. The terpolymer of claim 3 wherein said melt viscosity is 40 to 300 MPa.s.