NON-HALOGEN BENZOXAZINE-BASED CURABLE COMPOSITIONS WITH HIGH GLASS TRANSITION TEMPERATURE Russian patent published in 2013 - IPC C07D407/14 C07D265/36 C08L63/00 C09K21/00 

FIELD: chemistry.

SUBSTANCE: present invention relates to a non-halogen curable composition which contains a benzoxazine monomer (a) of formula

,

where each R is independently an allyl, an unsubstituted or substituted phenyl, unsubstituted or substituted C₁-C₈-alkyl, or unsubstituted or substituted C₃-C₈-cycloalkyl; (b) at least one epoxy resin; (c) a catalyst which contains a phenol compound; (d) an additive which increases impact strength of formula

,

where m equals 1 or 2; n equals 2-6; R⁰ is an n-valent radical of an elastomeric prepolymer after removal of the end isocyanate, amino or hydroxyl group, where the elastomeric prepolymer is soluble or dispersible in epoxy resin; X and Y are independently -O- or -NR³-, where at least one X or Y is -NR³-; R² is a (m+1)-valent polyphenol or aminophenol radical after removing the phenol hydroxyl group and optionally an amino group; and R³ is a hydrogen atom, C₁-C₆-alkyl or phenol; and (e) a solvent. The invention also includes production method.

EFFECT: non-halogen curable composition is especially suitable for use in motor car and aerospace engineering since after curing, the composition forms a composite having high glass transition temperature.

12 cl, 2 tbl, 6 ex