Method for preparing a water-containing vinyl acetate polymer di

Details Method for preparing a water-containing vinyl acetate polymer di Method for preparing a water-containing vinyl acetate polymer di

1980-06-20

1982-03-30

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524832, C08L 304

Patent

active

043223222

ABSTRACT:
For preparing a water-containing vinyl acetate polymer dispersion, vinyl acetate monomer and initiator are added to a water solution from an emulsifier and hydroxypropyl starch and/or hydroxyethyl starch. The emulsifier amount is equal to 0,5 to 5 weight % from the monomer amount. The degree of substitution of the starch is higher than 0,8 substituted glucose hydroxyl groups per anhydroglucose unit and lies more specially between 0,8 and 1,8 substituted glucose hydroxyl groups per anhydroglucose unit, when the starch is hydroxypropyl starch or between 0,8 and 2,75 substituted glucose hydroxyl groups per anhydroglucose unit, when the starch is hydroxyethyl starch.

REFERENCES:
patent: 3769248 (1973-10-01), Kovats
patent: 3879365 (1975-04-01), Greminger

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