Production of sulphonic acid group-containing acrylonitrile poly

Details Production of sulphonic acid group-containing acrylonitrile poly Production of sulphonic acid group-containing acrylonitrile poly

1984-11-19

1986-12-23

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253285, 525368, 525369, 526230, 526287, C08F 800

Patent

active

046313176

ABSTRACT:
Sulphonic acid-and sulphonate group-containing acrylonitrile polymers are advantageously obtained by precipitation copolymerization in aliphatic hydrocarbons using ethylenically unsaturated sulphonic esters free from carboxylic acid and carboxylic acid ester groups as comonomers and saponifying the sulphonic acid ester groups of the copolymer before, during or after shaping.

REFERENCES:
patent: 4126603 (1978-11-01), Lorenz et al.
patent: 4143020 (1979-03-01), Emmons et al.
patent: 4336022 (1982-06-01), Lynch et al.
patent: 4535139 (1985-08-01), Brauer et al.

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