发明授权
US4201587A Graft copolymers as diffusion control layers in photographic diffusion transfer products 失效
接枝共聚物作为照相扩散转移产物中的扩散控制层

Graft copolymers as diffusion control layers in photographic diffusion
transfer products
摘要:
A .beta.-eliminating graft copolymer useful as a diffusion control layer in film units adapted for diffusion transfer processes is disclosed.
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