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Polyamide mold plastic and its use in production of transparent and vapor-disinfectant molding member and extrusion object

A molding compound, polyamide technology, applied in the field of polyamide molding compound, can solve the problems of repeated disinfection of undisclosed products and the like

Active Publication Date: 2009-04-08
艾曼斯(苏州)工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The known prior art does not disclose data on the applicability of the product in terms of its ability to be sterilized multiple times. Due to safety and time reasons, it is currently mainly sterilized at 134°C

Method used

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  • Polyamide mold plastic and its use in production of transparent and vapor-disinfectant molding member and extrusion object
  • Polyamide mold plastic and its use in production of transparent and vapor-disinfectant molding member and extrusion object
  • Polyamide mold plastic and its use in production of transparent and vapor-disinfectant molding member and extrusion object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] The test disinfection method (134 ℃ / 7 minutes) that the present invention uses carries out in the following way:

[0063] 1. Equipment for hot steam sterilization

[0064] The equipment used was an A2549E autoclave from the company Tuttnauer with a chamber volume of 26 I. A four-tiered rack (each with a perforated plate) receiving the specimen is placed inside the circular interior of a horizontally oriented pressure chamber.

[0065] 2. Standard Test Specimen and Pretreatment

[0066] ISO test specimens (standard: ISO / CD3167, type A1, 170 x 20 / 10 x 4 mm) were placed on racks as unpretreated, non-contacting injection molded parts. The autoclave is then closed and screwed down.

[0067] Set the amount of test specimen required according to the planned withdrawal time.

[0068] 3. Perform hot steam sterilization

[0069] The autoclave was heated to 134° C., and the water (about 350 ml) dispensed thereto was evaporated in the autoclave.

[0070] This process lasts 20...

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Abstract

The invention relates to a polyamide molding material or copolyamide molding material and the use of such a polyamide molding material or copolyamide molding material for producing steam-sterilizable transparent moldings and extrudates. This polyamide molding material is characterized in that it comprises at least one copolyamide formed from 35-42 mol% of bis(4-amino-3-methylcyclohexyl)methane (MACM), 35-42 mol% of isophthalic acid (IPS) and 16-30 mol% of laurolactam (LC12). MACM may be replaced up to 50% by bis(4-aminocyclohexyl)-methane (PACM) and IPA up to 50% by terephthalic acid (TPA). The polyamide molding material may also be a blend of copolyamides or a blend of copolyamides with polyamide 12. The relative viscosity (RV) of the polyamide molding material or copolyamide molding material is in any case adjusted to a value which is greater than 1.45. Steam-sterilizable and transparent standard specimens which are produced from such polyamide molding materials or copolyamide molding materials and whose composition corresponds to the transparent moldings and extrudates have a tensile strain at break which, after undergoing at least 140 and especially preferably at least 350 steam sterilization cycles, is above the stretching limit.

Description

technical field [0001] The present invention relates to the polyamide molding compound of independent claim 1 for the production of transparent, hot steam sterilizable molded and extruded articles, the invention also relates to the polyamide molding compound of independent claim 9 for the production of such transparent , Hot steam sterilized molded and extruded parts. Furthermore, the present invention relates to the copolyamide molding compound of independent claim 3 for the production of transparent, heat-steam sterilizable molded and extruded articles, and also to the copolyamide molding compound of independent claim 11 for the production of such transparent Application in hot steam sterilizable molded and extruded parts. Background technique [0002] Objects can be sterilized with boiling water (ie close to 100°C), or with higher temperature saturated water vapor (steam disinfection), or with high temperature dry air (hot air disinfection). In hospitals and in real lif...

Claims

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Application Information

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IPC IPC(8): C08G69/26C08G69/36C08L77/00C08L77/06
CPCC08L77/02C08L77/06C08G69/265C08G69/36C08L77/00C08L2205/02C08L2666/20C08G69/26
Inventor F·S·布勒R·哈拉
Owner 艾曼斯(苏州)工程塑料有限公司
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