abstract |
WHEREIN N REPRESENTS AN INTEGER FROM 1 TO 4. (CH2-O-CH2-CH(-BR)-CH2-BR)N (HO-CH2)(4-N)-(4-(HO-)TETRAHYDROPYRAN-3,3,5,5-TETRAYL)- A FLAME-RTARDANT POLYURETHANE RESIN IS FORMED FROM A MIXTURE COMPRISING AT LEAST ONE ORGANIC POLYISOCYANATE AND AT LEAST ONE BROMINATED POLYOL ETHER WHICH CAN BE A 2, 3-DIBROMOPROPYL ETHER OF SORBITOL OR A 2,3-DIBROMOPROPYL ETHER HAVING THE GENERAL FORMULA: |