Process to make a composition comprising a monovinylaromatic polymer and a polymer made from renewable resources

Patent metadata

Field	Value
Publication number	US-9862817-B2
Application number	US-201615355179-A
Country	US
Kind code	B2
Filing date	Nov 18, 2016
Priority date	Jul 25, 2008
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

An at least two layer rotomolded article is described herein which may include a layer A and a layer B. Layer A can include an aliphatic polyester, a polyolefin, or a co- or ter-polymer that includes ethylene or styrene monomer, an unsaturated anhydride-containing monomer, epoxide-containing monomer, or carboxylic acid-containing monomer, and a (meth)acrylic ester monomer. Layer B can include a polyolefin and a polyester, or a co- or ter-polymer that includes an ethylene or a styrene monomer, an unsaturated anhydride-containing monomer, epoxide-containing monomer, or carboxylic acid-containing monomer, and a (meth)acrylic ester monomer.

First claim

The invention claimed is:

1. A process to make a composition comprising at least a monovinylaromatic polymer and at least a dispersed phase of one or more polymers made from renewable resources comprising:
a) forming a polymerizable mixture comprising:
at least a monomer or a dimer (a1) selected among an hydroxy carboxylic acid, a precursor of said hydroxy carboxylic acid, a cyclic component polymerizable by ring-opening polymerization (ROP) and a mixture of an epoxide and carbon dioxide,
dispersed in at least (a2) one monovinylaromatic monomer, optionally a rubber dissolved in (a2) the monovinylaromatic monomer,
b) contacting an appropriate catalyst with the polymerizable solution at conditions effective to essentially simultaneously produce a polymer A1 comprising the repeating units (a1) and a monovinylaromatic polymer A2, wherein the catalyst of is an esterification catalyst,
c) degassing the product of step b) to separate the unpolymerized monomers and comonomers and recovering a composition comprising at least a (A2) monovinylaromatic polymer and at least (A1) wherein, the weight proportion A1/(A2+A1) is up to 50%.

2. The process according to claim 1 wherein the catalyst of step b) is tin-2-ethyl-hexanoate.

3. The process according to claim 1 wherein an alcohol is used as the activator and chain transfer agent for the (a1) polymerization.

4. The process according to claim 1 wherein (a1) is a lactide.

5. The process according to claim 1 wherein the weight proportion A1/(A2+A1) is up to 30%.

6. The process according to claim 5 wherein the weight proportion A1/(A2+A1) is up to 20%.

Assignees

• Total Res & Technology Feluy
• Total Petrochemicals & Refining Feluy

Inventors

• Duc Michel
• Lodefier Philippe

Classifications

• C08L53/025

  modified · CPC title

• C08L9/00

  Compositions of homopolymers or copolymers of conjugated diene hydrocarbons · CPC title

• C08L25/02 Primary

  Homopolymers or copolymers of hydrocarbons · CPC title

• C08L51/04

  grafted on to rubbers · CPC title

• C08L67/04

  Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C08L67/06 takes precedence) · CPC title