Process for the Production of Low-Form Polyester Polyurethane Soft Foam Plastic and Their Use in Vehicles

摘要

... … …  a) polyisocyanates with …  b) polyesters having a molecular weight of from 400 to 10,000 which contain at least two hydroxyl groups and have been subjected, after their preparation, to continuous distillation at a mean residence time of from 2 to 600 seconds and a temperature of from 160 to 250 DEG C, preferably from 180 to 230 DEG C, and a pressure of from 0.05 to 10 mbar, preferably from 0.1 to 3 mbar, in the presence of …  c) water and/or readily volatile organic compounds as blowing agent and optionally in the presence of …  d) compounds having a molecular weight of from 32 to 400 which contain least two active hydrogen atoms as chain extenders and crosslinking agents, and optionally in the presence of …  e) auxiliaries and additives known per se, … and are used in transport means (transportation), preferably automobiles (cars).