# US 5,344,877 A · Molding material from a particulate graft polymer

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- Number: US 5,344,877 A
- Document ID: US5344877A
- Status: Granted
- Kind: A
- Application number: 08/060,976
- Filed: 1993-05-14
- Granted: 1994-09-06
- Earliest claimed: 1992-05-19
- Assignees: BASF SE
- Inventors: Wolfgang Fischer; Norbert Guentherberg; Norbert Niessner; Karl Ruppmich; Friedrich Seitz
- Web page: https://patentgrep.com/patent/US5344877A

## CPC

- C08F 279/02: on to polymers of conjugated dienes
- C08F 265/04: on to polymers of esters
- C08L 25/12: with unsaturated nitriles
- C08L 51/003: {grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C08L51/04, C08L51/06 take precedence)}
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

A molding material from a particulate graft polymer which consists of A: a grafting base A based on an acrylate rubber and B: a graft B of B1: from 40 to 89.9% by weight of at least one vinylaromatic monomer B1 B2: from 10 to 49.9% by weight of at least one polar, coplymerizable, ethylenically unsaturated monomer B2 B3: from 0.1 to 20% by weight of at least one monomer B3 containing one or more acidic groups.

## Claims

### Claim 1

A molding material consisting essentially of
(i) from 1-50% by weight of a particulate graft polymer of
A: a grafting base (A) based on
A1: an acrylate rubber having a glass transition temperature below 0.degree. C. the acrylate rubber consisting of
A11: from 75 to 99.8% by weight of at least one alkyl acrylate (A11) where the alkyl radical is of 1 to 8 carbon atoms
A12: from 0.1 to 5% by weight of at least one polyfunctional crosslinking monomer (A12) which contains at least two ethylene double bonds and is not conjugated in the 1,3-position, and
A13: from 0.1 to 20% by weight of at least one monomer (A13) which is ethylenically unsaturated and contains a tertiary amino group in the molecule, or based on
A2: a diene rubber (A2) having a glass transition temperature below 0.degree. C. wherein the diene rubber is obtained from conjugated diene monomers, the diene rubber consisting of
A21: at least 50% by weight of one or more dienes (A21),
A22: up to 50% by weight of at least one copolymerizable ethylenically unsaturated monomer (A22), and
A23: from 0.1 to 15% by weight of at least one monomer (A23) which is ethylenically unsaturated and contains a tertiary amine group in the molecule, and
B: a graft (B) of
B1: from 40 to 89.9% by weight of at least one vinylaromatic monomer (B1),
B2: from 10 to 49.9% by weight of at least one polar copolymerizable ethylenically unsaturated monomer (B2),
B3: from 0.1 to 20% by weight of at least one monomer (B3) which is ethylenically unsaturated and contains carboxyl or sulfo groups, and (ii) from 50 to 90% by weight of at least one matrix polymer obtained from ethylenically unsaturated monomers, which polymer has a glass transition temperature of more than 25.degree. C.

### Claim 2 (depends on 1)

The molding material of claim 1 consisting essentially of
(i) from 1-50% by weight of a particulate graft polymer of
A: a grafting base (A) based on a diene rubber (A.sub.2) having a glass transition temperature below 0.degree. C. wherein the diene is obtained from conjugated diene monomer, the diene rubber consisting of
A21: at least 50% by weight of one or more dienes (A21),
A22: up to 50% by weight of at least one copolymerizable ethylenically unsaturated monomer (A22), and
A23: from 0.1 to 15% by weight of at least one monomer (A23) which is ethylenically unsaturated and contains a tertiary amine group in the molecule, and
B: a graft (B) of
B1: from 40 to 89.9% by weight of at least one vinylaromatic monomer (B1),
B2: from 10 to 49.9% by weight of at least one polar copolymerizable ethylenically unsaturated monomer (B2),
B3: from 0.1 to 20% by weight of at least acidic monomer (B3) which is ethylenically unsaturated and contains carboxy or sulfo groups, and (ii) from 50 to 90% by weight of at least one matrix polymer obtained from ethylenically unsaturated monomers, which polymer has a glass transition temperature of more than 25.degree. C.