发明授权
US5324649A Enzyme-containing granules coated with hydrolyzed polyvinyl alcohol or copolymer thereof 失效
含有水解聚乙烯醇的含酶颗粒或其共聚物

Enzyme-containing granules coated with hydrolyzed polyvinyl alcohol or
copolymer thereof
摘要:
A granular enzyme composition is produced, having reduced tendencies to form dust and leave residue, and exhibiting improved stability and delayed release characteristics. The granular composition comprises a core, an enzyme layer and an outer coating layer. The enzyme layer, and optionally the core and outer coating layer, contain a vinyl polymer. The vinyl polymer is preferably a hydrolyzed polyvinyl alcohol or copolymer thereof. The hydrolyzed polyvinyl alcohol has varying degrees of hydrolysis in the core, enzyme layer and outer coating layer. Also disclosed are methods for making such enzyme-containing granules, the methods having greatly reduced processing time.
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