Monocyclic benzoxazine intermediate with low viscosity and a plurality of functional groups and synthesis method thereof

A benzoxazine and multi-functional technology, which is applied in the field of ring-opening polymerization and its polymer preparation, can solve the problems of monocyclic benzoxazine intermediates that cannot be cross-linked and cured, and have low mechanical and thermal properties.
CN101747288AInactive Publication Date: 2010-06-23SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a monocyclic benzoxazine intermediate with low viscosity and a plurality of functional groups, a preparation method thereof and application thereof in the preparation of high-temperature resistant resin. The process method is simple, practicable, and suitable for industrial production in most of factories; a cross-linked polymer prepared by the benzoxazine intermediate has very high vitrification conversion temperature (Tg is larger than 250 DEG C), is available to high-temperature resistant materials used in the temperature more than 250 DEG C, and has higher carbon residue rate (800 DEG C, N2, PNB-ala: 57%; 800 DEG C, N2, FB-ala: 61%) and a certain application prospect in terms of the preparation of carbon materials and ablation resistant materials.
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Description

technical field

[0001] The present invention relates to a benzoxazine intermediate and a synthesis method thereof, in particular to a novel benzoxazine intermediate—a low-viscosity, multi-reactive group-containing, monocyclic benzoxazine intermediate and its Synthetic methods, and the ring-opening polymerization of said intermediates and the preparation of polymers thereof. The invention belongs to the technical field of preparation of novel monocyclic benzoxazine intermediates and preparation of high temperature resistant resins. Background technique

[0002] Monocyclic benzoxazine intermediates without functional substituents cannot be cross-linked and cured, and only oligomers can be obtained by polymerization. Their mechanical properties and thermal properties are not high, so they have not received enough attention. They are often used as polybenzoxazines. Reactive diluent in oxazine systems. The emergence of bicyclic benzoxazine intermediates in the 1990s has changed...

Claims

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