Process for Preparing a Masterbatch of Polymer Additive

Patent metadata

Field	Value
Publication number	US-2017342222-A1
Application number	US-201515513291-A
Country	US
Kind code	A1
Filing date	Sep 22, 2015
Priority date	Sep 26, 2014
Publication date	Nov 30, 2017
Grant date	—

Abstract

Process for preparing a masterbatch comprising 20-90 wt % of a polymer additive dispersed in 10-80 wt % of a thermoplastic polymer, said process comprising the steps of: —providing the additive in liquid form, —optionally heating the additive, —adding solid particles of the thermoplastic polymer to the liquid additive, —heating the resulting mixture to a temperature in or above the melting temperature of the polymer, —treating the mixture with shaping equipment to form solid particles.

First claim

1 . Process for preparing a masterbatch comprising 20-90 wt % of a polymer additive dispersed in 10-80 wt % of a thermoplastic polymer, said process comprising the steps of:
providing the additive in liquid form, optionally heating the additive, adding solid particles of the thermoplastic polymer to the liquid additive, heating the resulting mixture to a temperature in or above the melting temperature of the polymer, treating the mixture with shaping equipment to form solid particles.

2 . Process according to claim 1 wherein in the process is performed under inert atmosphere.

3 . Process according to claim 1 or 2 wherein the addition of solid particles of thermoplastic polymer to the liquid additive and the heating of the resulting mixture are performed in a stirred vessel.

4 . Process according to claim 3 wherein the residence time of the mixture in said vessel is at least 0.5 hour.

5 . Process according to claim 4 wherein the residence time is at least 1 hour.

6 . Process according to any one of the preceding claims wherein the additive is heated to a temperature in the range 80-150° C., preferably 100-130° C. prior to the addition of solid particles of thermoplastic polymer.

7 . Process according to any one of the preceding claims wherein the polymer additive is selected from alkoxylated amines, amides, alkoxylated amides, glycerol esters, alkoxylated glycerol esters, and alkylated sorbitan esters.

8 . Process according to claim 7 wherein the polymer additive is an alkoxylated amine having the general formula

wherein R 1 is a saturated or unsaturated hydrocarbon chain with 11 to 21 carbon atoms, optionally substituted with —OH; —O—; —(C═O)—O—; —NH—; —Si—; —S—; —P—; —SO 2 —; —S═O—; or —SO 3 H containing groups, and R 2 is independently selected from H, ethylene oxide chains, propylene oxide chains, and ethylene oxide-propylene oxide bock- or random copolymer chains, provided that at least one R 2 -group is other than H, and the total number of ethylene oxide and propylene oxide per chain is in the range 1-30.

9 . Process according to claim 8 wherein the polymer additive is an alkoxylated monoamide having the general formula

wherein R 1 is a saturated or unsaturated hydrocarbon chain with 11 to 21 carbon atoms, optionally substituted with —OH; —O—; —(C═O)—O—; —NH—; —Si—; —S—; —P—; —SO 2 —; —S═O—; or —SO 3 H containing groups, and R 2 is independently selected from H, ethylene oxide chains, propylene oxide chains, and ethylene oxide-propylene oxide bock- or random copolymer chains, provided that not every R 2 in each formula is H, and the total number of ethylene oxide and propylene oxide per chain is in the range 1-30.

10 . Process according to claim 9 wherein the polymer additive is an alkoxylated bisamide having the general formula

wherein R 2 is independently selected from H, ethylene oxide chains, propylene oxide chains, and ethylene oxide-propylene oxide bock- or random copolymer chains, provided that at least one R 2 -group is other than H, the total number of ethylene oxide and propylene oxide per chain is in the range 1-30, and R 3 is a linear or branched alkanediyl chain with 2 to 6 carbon atoms, optionally substituted with —OH; —O—; ═O; —S—; —SO 2 —; —Si—; or —P— containing groups.

11 . Process according to claim 10 wherein the polymer additive is an alkoxylated glycerol ester having the formula

wherein R 1 is a saturated or unsaturated hydrocarbon chain with 11 to 21 carbon atoms, optionally substituted with —OH; —O—; —(C═O)—O—; —NH—; —Si—; —S—; —P—; —SO 2 —; —S═O—; or —SO 3 H containing groups, and R 2 is independently selected from H, ethylene oxide chains, propylene oxide chains, and ethylene oxide-propylene oxide bock- or random copolymer chains, provided that at least one R 2 -group is other than H, the total number of ethylene oxide and propylene oxide per chain is in the range 1-30, and n is an integer in the range 1-8.

12 . Process according to claim 11 wherein the polymer additive is an alkoxylated sorbitan ester have the formula

wherein R 1 is a saturated or unsaturated hydrocarbon chain with 11 to 21 carbon atoms, optionally substituted with —OH; —O—; —(C═O)—O—; —NH—; —Si—; —S—; —P—; —SO 2 —; —S═O—; or —SO 3 H containing groups, and R 2 is independently selected from H, ethylene oxide chains, propylene oxide chains, and ethylene oxide-propylene oxide bock- or random copolymer chains, provided that at least one R 2 -group is other than H, the total number of ethylene oxide and propylene oxide per chain is in the range 1-30.

13 . Process according to any one of the preceding claims wherein the masterbatch contains 50-80 wt % of the polymer additive and 20-50 wt % of the thermoplastic polymer.

14 . Process according to any one of the preceding claims wherein the mixture of thermoplastic polymer and liquid polymer additive is heated to a temperature in the range 150-250° C.

15 . Process according to any one of the preceding claims wherein the thermoplastic polymer is selected from polypropylene, polyethylene, polystyrene, polybutadiene, ethylene-vinyl acetate copolymer, and styrene acrylonitrile.

Assignees

• Akzo Nobel Chemicals Int Bv

Inventors

• Spijkerman Geesje Klasina

Classifications

• C08J2323/12

  Polypropene · CPC title

• C08J3/226 Primary

  using a polymer as a carrier · CPC title

• C08J2333/20

  Homopolymers or copolymers of acrylonitrile (C08J2355/02 takes precedence) · CPC title

• C08J3/203 Primary

  Solid polymers with solid and/or liquid additives · CPC title

• C08J2325/06

  Polystyrene · CPC title