Material containing polyreactions products and method for the production thereof

#This invention relates to materials containing polyreaction products, methods for the production thereof, and the use thereof for the production of planar structures or sheet materials, respectively, based on renewable raw materials.

#Linoleum has long been known as a resilient floor covering based on renewable raw materials. Because of its natural constituents, linoleum has achieved great structural-biological and environmental importance. The production of linoleum coverings, however, requires in the last stage of the process a heat treatment that lasts several weeks, the "ripening time. "

#Coating masses that are based on renewable raw materials and serve for the coating of planar structures or of release paper are known from DE-A-41 35 664. The coating masses consist of a combination of epoxidation products of esters of unsaturated fatty acids and partial esters of polycarboxylic acids with polyether polyols as well as a hydrophobing agent. These coating masses are used for the production of floor coverings. It is disadvantageous, however, that the top layer of coverings produced in this way is very rough and non-transparent. Further, the back coatings require a complicated production with more costly separating paper or release paper, has no foam, and thus offer no walking comfort. Furthermore, it turns out that the surface of these coverings is not sufficiently dirt-repellent and exhibits poor complete curing.

#Epoxidized linseed oil (70 g) and a partial ester of maleic anhydride and di-propylene glycol (70 g), as liquid components for the production of the binder, as well as cobalt siccative (0.3 g) and cerium siccative (3 g) (metal content 10%), are separately weighed and pre-crosslinked for 25 min at 50.degree. C. After cooling to room temperature, the reaction product thus obtained is added to wood dust (40 g) and calcium carbonate (20 g) as fillers and intimately mixed. After compounding, press-molded plates are prepared from the highly viscous mass so obtained, this preparation taking place in a two-jaw hydraulic press with the help of a 2 mm thick, 100 cm.sup.2 metal frame and a silicone separating fabric. The ram pressure of the mold is roughly 20 bar, the temperature of the jaws 180.degree. C., and the crosslinking time 5 min.

#The plates so obtained are flexible, resilient, tack-free, and crosslinked throughout the entire cross section.

#The preceding Example 1 was repeated except that, instead of epoxidized linseed oil and partial ester as binder, copal resin (28 g) and epoxidized linseed oil (56 g) and partial ester of maleic anhydride and dipropylene glycol (56 g) is used as binder.