发明授权
US5472741A Softening and waterproofing retanning agents 失效
软化防水复鞣剂

Softening and waterproofing retanning agents
摘要:
Copolymers containing incorporated radicals of long-chain alcohols and neutralized carboxyl groups are suitable as retanning agents for leather. They result in an excellent combination of water repellency, softness and grain tightness.
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