Hardenable epoxide resin mixtures containing a latent hardener,

Details Hardenable epoxide resin mixtures containing a latent hardener, Hardenable epoxide resin mixtures containing a latent hardener,

1990-11-16

1993-05-25

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525484, 525504, 525523, 525526, 525533, 528 90, 528 93, 528 94, 528 99, 528109, 528361, 528374, 523445, 523447, 523466, 523468, 428413, C08G 5940, C08G 6500

Patent

active

052140989

ABSTRACT:
Hardenable mixtures comprising
(a) an epoxide resin,
(b) a latent epoxide resin hardener which starts to react only at a temperature of at least 80.degree. C. (measured by DSC at a heating rate of 10.degree. C./minute),
(c) an amine having at least one amine hydrogen and
(d) a thiol having at least one SH group, either the amine (c) having at least two hydrogen atoms bound to one or more nitrogen atoms or the thiol (d) having at least two SH groups, and the difference between the reaction maxima in the DSC diagram at a heating rate of 10.degree. C./minutes being at least 30.degree. C., are suitable for the production of crosslinked products, especially for the production of flexible prepregs having a non-critical B stage and a very good storability.

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