| 摘要 |
The addition of a substituted 2-butene having the general formula EACH X independently, forming either the cis or trans isomer, is F, Cl, Br, I or H where not more than one X is H, each M independently is O or S, each Z independently is Cl or Br, EACH A independently is an inert substituent, such as F, I, methyl, phenyl, hydroxy, methoxy, nitro, carboxy, acetoxy, cyano, amino or sulfo, N AND M ARE INTEGERS OF 1 TO 5 PROVIDED THAT WHEN N = M = 1 EACH Z and X is Br and M = O and provided that when one X is H then n and m are integers of 3 to 5, and i and j are integers of 0 to 2 where i </= n-1 and j </= m-1 TO A RESIN OF POLYPROPYLENE OR POLYURETHANE MAKES THE RESULTANT RESIN FIRE RETARDANT OR, IN GREATER CONCENTRATIONS, SELF-EXTINGUISHING ACCORDING TO Underwriters test class 2.
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