Abstract: A method for preservation of fish consists in that the original product is salt-cured and held, whereupon the fish is given a protective coating of a polymer composition containing polyvinyl alcohol, a mixture of poly-hydroxyethyleneglycol ethers of monoethanolamides of synthetic fatty acids of the C.sub.10 -C.sub.16 fraction, sorbic acid, glycerol and water, the mass percentage content of the components of said polymer composition being as follows:______________________________________ polyvinyl alcohol 0.1 to 25.0 mixture of polyhydroxyethyleneglycol 0.00024 to 0.06 ethers of monoethanolamides of synthetic fatty acids of the C.sub.10 -C.sub.16 fraction sorbic acid 0.01 to 4.0 glycerol 10 to 15 water to make up 100, ______________________________________whereupon the thus-obtained coated fish is treated with an aqueous modifying solution of the following mass percentage composition: ______________________________________ modifier 1 to 25 water to make up 100.

Abstract: A heat-resistant composition containing an organic or elemento-organic binder and a filler. As a binder the composition contains at least one compound of the formula: ##STR1## wherein R is an organic radical with a number of carbon atoms of from 2 to 1,000; a radical with a number of carbon atoms of from 2 to 1,000 containing 1 to 1,000 atoms of silicon and/or1 to 1,000 atoms of fluorine, and/or1 to 1,000 atoms of chlorine, and/or1 to 1,000 atoms of bromine, and/or1 to 1,000 atoms of nitrogen, and/or1 to 1,000 atoms of sulphur, and/or1 to 1,000 atoms of phosphorus, and/or1 to 1,000 atoms of boron, and/or1 to 1,000 atoms of oxygen,X and Y are each --NH.sub.2, --OH, --SH, --NCO, --NSO, --NCS, said X and Y may be the same or different; Z is --C.tbd.N, --C.tbd.CH and is located in the same or different positions selected from alpha-, beta-, ortho- and peri- positions relative to X and Y; n.gtoreq.1, m.gtoreq.1, p.gtoreq.