Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-12-14
1984-07-10
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...
525158, 525164, 525206, 525233, 5253291, 5253292, 525340, C08F 840
Patent
active
044593864
ABSTRACT:
For the production of acrylonitrile polymers containing phosphonic acid groups and having phosphorus contents of 1-17% by weight, homo- or copolymers of acrylonitrile having molecular weights of 1,000-200,000 are reacted at temperatures of 120.degree.-220.degree. C. with 0.2-8 moles of phosphorous acid per mole of nitrile group. Preferably, a melt is prepared from phosphorous acid, and the acrylonitrile polymer is added thereto in metered quantities.
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Chemische Werke Huels Aktiengesellschaft
Lipman Bernard
Schofer Joseph L.
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