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US5532332A Light-absorbing polymers 失效
吸光聚合物

Light-absorbing polymers
摘要:
Provided are light-absorbing polymers useful for imparting color and/or ultraviolet light screening properties to thermoplastic resins. The polymeric colorants or UV absorbers may be added during the formation of the uncolored thermoplastic polymer or melt or solution blended with other thermoplastic polymers.
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