Halogen-free flam retardant prepolymer, preparation method thereof and application of halogen-free flam retardant prepolymer in copper clad laminate (CCL)
A technology of prepolymers and copper clad laminates, applied in the field of halogen-free flame retardant prepolymers, can solve the problem of improper ratio of phosphorus-containing compounds and bismaleimide, which cannot meet high-performance copper-clad laminates, and cannot meet high-performance copper-clad laminates. etc. to achieve the effects of good toughness, excellent heat resistance and low dielectric loss
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Embodiment 1
[0041] Take 100g of 4,4'-diphenylmethane bismaleimide, 50g of allyl bisphenol A, and 30g of phosphorus-containing compound (A) into a 500ml reaction bottle, slowly heat to 80-160°C with an oil bath and Keep stirring and react for 30 minutes to obtain a bismaleimide / allyl / phosphorous compound terpolymer prepolymer, and cool to room temperature after the reaction is completed.
Embodiment 2
[0043]Take 30g of 4,4'-diphenyl ether bismaleimide, 90g of 4,4'-diphenylmethane bismaleimide, 20g of allyl phenoxy resin, 40g of allyl bisphenol A, containing Put 38g of phosphorus compound (B) into a 500ml reaction bottle, use an oil bath to slowly heat to 120-160°C and keep stirring for 50min to obtain bismaleimide / allyl group / phosphorus compound terpolymerization prepolymerization After the reaction was completed, it was cooled to room temperature.
Embodiment 3
[0045] Take 125g of 4,4'-diphenyl ether bismaleimide, 70g of allyl phenoxy resin, and 40g of phosphorus-containing compound (B) into a 500ml reaction bottle, heat slowly to 120-160°C with an oil bath and Keep stirring and react for 60 minutes to obtain a bismaleimide / allyl / phosphorous compound terpolymer prepolymer, and cool to room temperature after the reaction is completed.
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