Resin blends exhibiting improved impact properties

• US 5,037,889 A
• Filed: 01/12/1990
• Issued: 08/06/1991
• Est. Priority Date: 12/23/1986
• Status: Expired due to Term

• Current Assignee: Sabic Innovative Plastics IP BV (Government of Saudi Arabia)
• Original Assignee: General Electric Company
• Inventors: Peascoe, Warren J., McHale, Angelika H.
• Primary Examiner(s): Short, Patricia
• Application Number:
  US07/464,198
• Time in Patent Office: 571 Days
• Field of Search: 525/133, 525/148, 525/175, 525/176, 525/166
• US Class Current: 525/133
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• 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 67/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: C08L 69/005 Polyester-carbonates

Abstract

A resin composition comprising:

(i) at least one aromatic carbonate resin;

(ii) at least one polyester resin; and

(iii) an impact improving effective amount of at least one two-phase interpolymer comprised of at least one cross-linked polyacrylate and at least one cross-linked styrene-acrylonitrile resin.

Claims

1. A process for improving the impact properties of a blend of at least one aromatic carbonate resin and at least one polyester resin comprising admixing said blend with an amount effective to improve the impact properties of said blend of a two-phase interpolymer free of non-cross-linked or linear styrene-acrylonitrile polymer and free of any grafting or graft-linking comprised of the polymerized and cross-linked reaction products of at least one C₂ -C₁₀ alkyl acrylate monomer, at least one C₈ -C₂₂ alkyl methacrylate monomer, or mixtures thereof, and a cross-linked styrene-acrylonitrile resin second phase.

2. The process of claim 1 wherein said alkyl acrylate monomer is a C₄ -C₆ alkyl acrylate monomer.

3. The process of claim 2 wherein said alkyl acrylate monomer is butyl acrylate.

4. The process of claim 1 wherein said interpolymer is comprised of from about 40 to about 90 weight percent of said cross-linked polyacrylate first phase and from about 10 to about 60 weight percent of said styrene-acrylonitrile resin second phase.

5. The process of claim 4 wherein said interpolymer is comprised of from about 50 to about 80 weight percent of said cross-linked polyacrylate first phase and from about 20 to about 50 weight percent of said cross-linked styrene-acrylonitrile second phase.

6. The process of claim 1 which comprises admixing from about 1 to about 30 weight percent of said interpolymer with said blend.

7. The process of claim 6 which comprises admixing from about 3 to about 25 weight percent of said interpolymer with said blend.

8. The process of claim 1 which comprises admixing from about 4 to about 20 weight percent of said interpolymer with said blend.