Polyolefins, polyolefin blends and elastomer-modified polyolefins with increased surface polarity

• US 5,565,520 A
• Filed: 06/01/1995
• Issued: 10/15/1996
• Est. Priority Date: 06/03/1994
• Status: Expired due to Fees

• Current Assignee: Goldschmidt AG
• Original Assignee: Th. Goldschmidt AG (Rag-Stiftung)
• Inventors: Hahn, Gunter, Knebelkamp, Arno, Fock, Jurgen
• Primary Examiner(s): ZEMEL, IRINA SOPJIA
• Application Number:
  US08/457,919
• Time in Patent Office: 502 Days
• Field of Search: 525/94, 525/299, 525/227, 525/301
• US Class Current: 525/94
• CPC Class Codes: C08L 23/10 Homopolymers or copolymers of propene
• CPC Class Codes: C08L 23/16 Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 2666/24 Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
• CPC Class Codes: C08L 53/00 Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers

Abstract

Polyolefins, polyolefin blends and elastomer-modified polyolefins containing additives to increase the surface polarity are prepared. They contain AB block copolymers as additives. A method for preparation of polyolefins, polyolefin blends and elastomer-modified polyolefins with a polar surface is defined as well as the method of preparing the polyolefins articles.

Claims

1. Polyolefins, polyolefin blends and elastomer-modified polyolefins, having a polar surface, wherein the surface polarity is imparted by an AB block copolymer of a formula ##STR9## wherein R¹ groups are same or different and represent alkyl groups with 1 to 8 carbon atoms, with the exception of the t-butyl group;

R² groups are --(CH₂)_p groups, in which p is a number from 2 to 6;

R³ group is a chain regulator, and is free of active hydrogen atoms; and

n and m are same or different and in each case have an average numerical value of not less than 3.

2. Polyolefins, polyolefin blends and elastomer-modified polyolefins of claim 1, wherein

R¹ is an alkyl group with 1 to 8 carbon atoms;

R² is --(CH₂)₂ -- group;

R³ is C₁₂ H₂₅ S-- group; and

n and m have a numerical value of 3 to 100.

3. Polyolefins, polyolefin blends and elastomer-modified polyolefins of claim 2, wherein R¹ is methyl, ethyl, butyl or 2-ethylhexyl group.

4. Polyolefins, polyolefin blends and elastomer-modified polyolefins of any of claims 1, 2 or 3, wherein the block copolymers are present in an amount of about between 0.1 to 10% by weight of said polyolefins, polyolefins blends and elastomer-modified polyolefins.