# US 4,399,254 A · Cationic latices useful for thermoplastic and thermosetting applications

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- Number: US 4,399,254 A
- Document ID: US4399254A
- Status: Granted
- Kind: A
- Application number: 06/305,590
- Filed: 1981-09-25
- Granted: 1983-08-16
- Earliest claimed: 1981-09-25
- Assignees: PPG Industries, Inc.
- Inventors: Suryya K. Das; Charles M. Kania
- Web page: https://patentgrep.com/patent/US4399254A

## CPC

- C08F 2/28: cationic
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

A process for preparing stable latices with cationic surfactants having their gegen-ions derived from methanesulfonic acid; the cationic surfactant is present in relatively low but effective concentrations.

## Claims

### Claim 1

A process for preparing a stable cationic acrylic latex; said process comprises copolymerizing ethylenically unsaturated monomers in an acidic medium in the presence of a cationic surfactant in which the gegen-ion of the cationic surfactant is derived from methanesulfonic acid.

### Claim 2 (depends on 1)

A process of claim 1, wherein at least one of the ethylenically unsaturated monomers is amino group-containing.

### Claim 3 (depends on 1)

A cationic acrylic latex prepared as recited in claim 1.