Multifunctional optically highly transparent films and method for their production
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United States of America Patent
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Aug 16, 2022
Grant Date -
Sep 20, 2018
app pub date -
Feb 25, 2016
filing date -
Feb 27, 2015
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Abstract
Multifunctional optically highly transparent films based on cellulose esters are disclosed, having the following components within a film a) cellulose esters preferably based on cellulose triacetate which can be processed into a highly transparent film with Haze value of < than 0.4% by virtue of a high degree of purity and optical quality and which is defined by the following properties b) at least one organic or inorganic material which acts as a plasticizer and as a spacer between the molecule chains of the cellulose esters and additionally introduced additives in a synergistically effective manner c) at least three organic or inorganic materials with a transmission influencing absorptive function in the wave length range of 300 nm to 2500 nm, the films having protective strain reducing function for the retina of the human eye.
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