Heat-hardenable reaction resin mixtures comprising polyfunctiona

Details Heat-hardenable reaction resin mixtures comprising polyfunctiona Heat-hardenable reaction resin mixtures comprising polyfunctiona

1984-06-27

1985-12-31

Welsh, Maurice J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

2643281, 427104, 523457, 523466, 524788, 524850, 525452, 528 59, 528 73, C08G 1838

Patent

active

045622272

ABSTRACT:
The invention relates to heat-hardenable reaction resin mixtures which contain polyfunctional epoxides, polyfunctional isocyanates and a reaction accelerator as well as, optionally containing customary additives and/or fillers. The invention has the object of achieving reaction resin mixtures which are stable in storage, consist of individual components that are easy to mix, exhibit a prolonged prehardening period and permit at the same time the manufacture of materials which combine the good mechanical properties and the high temperature-cycle resistance of polyurethane structures with the good thermal properties of oxazolidinone and isocyanurate structures. According to the invention, the reaction resin mixtures contain as polyfunctional isocyanates, isocyanate prepolymerisates in the form of reaction products of diphenyl methanediisocyanate and a diol, or of an isocyanate mixture of diphenyl-methanediisocyanate and a polymethylenepolyphenylisocyanate (with a functionality greater than 2) and a diol. The prepolymerisates utilize 0.01 to 0.35 equivalents and preferably 0.05 to 0.2 equivalents of the diol per 1 equivalent of isocyanate; the mixture contains 0.2 to 5 equivalents isocyanate per 1 equivalent of epoxy. The reaction accelerator is a tertiary amine or an imidazole.

REFERENCES:
patent: 3198851 (1965-08-01), Hoy
patent: 3394164 (1968-07-01), McClellan et al.
patent: 4055548 (1977-10-01), Carleton et al.
patent: 4070416 (1978-01-01), Narahara et al.
patent: 4100118 (1978-07-01), Numata et al.
patent: 4220731 (1980-09-01), Zuppinger

Affiliated with

Also associated with

Rating

Heat-hardenable reaction resin mixtures comprising polyfunctiona does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Heat-hardenable reaction resin mixtures comprising polyfunctiona, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat-hardenable reaction resin mixtures comprising polyfunctiona will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1025176