Abstract: The present invention is directed an expandable, non-sagging polyurethane composition prepared by mixing: a liquid polysocyanate with a liquid isocyanate reactive mixture. The isocyanate reactive mixture comprises i) one or more hydroxyl group containing compounds containing from 2 to 8 hydroxyl groups and having molecular weights of from about 1000 to about 6000, ii) one or more low molecular weight diols or triols having hydroxyl equivalent weights of about 200 or less, iii) one or more organic di- or polyamines, and iv) a relatively small amount of water.

Abstract: The invention is directed to a molding composition comprising an intimate, well dispersed blend of thermoplastic polyurethane, thermoplastic polyphosphonate and thermoplastic polycarbonate which composition is characterized by an improved level of flame resistance. A process for the preparation of said composition is also disclosed.

Abstract: The instant invention is directed to compounds having an average molecular weight of from 300 to 12,000, containing: at least one hydroxyl group and at least one urethano-aryl-sulfonic acid group and a method for their preparation. The process is characterized as a process for the preparation of compounds having a number average molecular weight of from 300 to 12,000 having at least one hydroxyl group and at least one urethano-aryl-sulfonic acid group, comprising: reacting at from 0.degree. to 190.degree. C.(A) compounds having a molecular weight of from 62 to 10,000 having at least two hydroxyl groups; with(B) aromatic isocyanato sulfonic acids, wherein the equivalent ratio of the total quantity of isocyanate groups (including any isocyanate groups present in dimerized form) to sulfonic acid groups is from 0.5:1 to 50:1 and the equivalent ratio of the sum of hydroxyl groups in (A) to NCO groups is from 1.5:1 to 30:1. The invention is also directed to the product by the process.

Abstract: The instant invention is directed to compounds having an average molecular weight of from 300 to 12,000, containing: at least one hydroxyl group and at least one urethano-aryl-sulfonic acid group and a method for their preparation. The process is characterized as a process for the preparation of compounds having a number average molecular weight of from 300 to 12,000 having at least one hydroxyl group and at least one urethano-aryl-sulfonic acid group, comprising: reacting at from 0.degree. to 190.degree. C.(A) compounds having a molecular weight of from 62 to 10,000 having at least two hydroxyl groups; with(B) aromatic isocyanato sulfonic acids, wherein the equivalent ratio of the total quantity of isocyanate groups (including any isocyanate groups present in dimerized form) to sulfonic acid groups is from 0.5:1 to 50:1 and the equivalent ratio of the sum of hydroxyl groups in (A) to NCO groups is from 1.5:1 to 30:1. The invention is also directed to the product by the process.

Abstract: This invention relates to an improved process for the preparation of polyisocyanates which contain biuret groups by the direct reaction of polyamines in vapor form with polyisocyanates.