Flame-resistant, low-temperature curing cyanate-based prepreg resins for honeycomb sandwich components with excellent surfaces
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United States of America Patent
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Aug 14, 2012
Grant Date -
Feb 7, 2008
app pub date -
May 11, 2007
filing date -
May 12, 2006
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Abstract
A textile web material impregnated with a mixture that contains at least a prepolymer prepolymerized from a starting material of one or more bifunctional or polyfunctional organic cyanates and from a starting material of one or more bifunctional or polyfunctional aromatic alcohols, wherein the one or more bifunctional or polyfunctional organic cyanates and the one or more bifunctional or polyfunctional aromatic alcohols are present in weight ratios ensuring a molar ratio of the OCN groups to the OH groups between 95:5 and 70:30 prior to prepolymerization. The mixture further contains one or more fillers.
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