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US 5,478,563 AGranted
Antibacterial and antifungal polyacetal resin composition
AssigneePolyplastics Co., Ltd.
InventorTakahisa Erami
Life of this patent
Estimating the term…
Abstract
Antibacterial and antifungal polyacetal resin compositions include a polyacetal base resin, and an antibacterial and/or antifungal effective amount between about 0.1 to about 5 parts by weight, per 100 parts by weight of the polyacetal base resin, of at least one antibacterial and antifungal agent which contains a metal ion selected from among silver, copper and zinc ions.
Claims3
An antibacterial and antifungal polyacetal resin composition consisting essentially of:
- (i) a polyacetal resin,
- (ii) an antibacterial and antifungal effective amount between about 0.1 to about 5 parts by weight, per 100 parts by weight of the polyacetal resin, of an antibacterial and antifungal additive which consists of zinc oxide together with one zinc salt selected from the group consisting of zinc sulfate and zinc benzoate, and
- (iii) a particulate carrier for said additive having a particle size of 100 .mu.m or less homogeneously dispersed throughout said polyacetal resin.
Dependencies are inferred from the claim text.