Invention Grant
- Patent Title: Sterilant degrading polymeric material
- Patent Title (中): 杀菌剂降解聚合材料
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Application No.: US690241Application Date: 1996-07-12
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Publication No.: US6132825APublication Date: 2000-10-17
- Inventor: Peter Frisk
- Applicant: Peter Frisk
- Applicant Address: CHX Pully
- Assignee: Tetra Laval Holdings & Finance, SA
- Current Assignee: Tetra Laval Holdings & Finance, SA
- Current Assignee Address: CHX Pully
- Main IPC: B01J31/06
- IPC: B01J31/06 ; B01J31/30 ; B29D22/00
Abstract:
A polymeric material integrated with a metal catalyst for promoting the degradation of a sterilants such as hydrogen peroxide and ozone. Examples of possible polymeric materials are PET, COPET and any mixture thereof. The polymer materials are usually configured into containers for aseptic processing. The metal catalyst may be selected from the group consisting of iron, cobalt, nickel, ruthenium, palladium, osmium, iridium, platinum, copper, manganese, salts thereof, oxides thereof and mixtures thereof. The metal catalyst is less than ten percent of the total weight of the modified polymeric material. The metal catalyst may be a plurality of nanosize particles or microsize particles. The metal catalyst may also be applied as a thin film onto a polymeric resin for absorption thereby. The sterilants usually become entrapped in amorphous zones of the polymeric material which results in higher than acceptable levels of sterilants in the containers. The novel polymeric material allows for application of a sterilant in the vapor phase, and substantially reduces the residence time of the sterilant as a container undergoes aseptic processing thereby expediting the aseptic process.
Public/Granted literature
- US5200100A Multifunctional viscosity index improver containing phenothiazine Public/Granted day:1993-04-06
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