发明名称 |
PROCESSES FOR THE PREPARATION OF OLIGOMERIC PHOSPHATES ESTER COMPOSITIONS |
摘要 |
Flame retardant oligomeric phosphate ester compositions having the structural formula: <CHEM> are prepared, wherein R is C1-C10 alkyl or haloalkyl, R<1> and R<2> can be the same or different and are hydrogen, C1-C10 alkyl or haloalkyl and n is an integer from zero to about 10. The method of preparing the compositions comprises reacting P2O5 with a trialkyl or tris(haloalkyl) phosphate in the presence of about 0.01% to about 5% of a phosphite at a temperature from about 0 DEG -200 DEG C. A polyphosphate ester having P-O-P bonds is formed which is then reacted with an epoxide to yield the oligomeric phosphate ester flame retardant compositions. Alternatively, a method of preparing similar compositions comprises reacting P2O5 with a trialkyl or tris(haloalkyl) phosphite at a temperature from about 0 DEG C. to about 200 DEG C. A mixed polyphosphate-polyphosphite ester having P-O-P bonds is formed which is then oxidised to yield a polyphosphate having P-O-P bonds; which is then reacted with an epoxide to yield the oligomeric phosphate ester flame retardant compositions. |
申请公布号 |
EP0004747(B1) |
申请公布日期 |
1982.06.02 |
申请号 |
EP19790300510 |
申请日期 |
1979.03.29 |
申请人 |
STAUFFER CHEMICAL COMPANY |
发明人 |
HARDY, THOMAS ARCHER;JAFFE, FRED |
分类号 |
C09K21/12;C07F9/09;C08G18/00;C08G79/04;C08J9/00 |
主分类号 |
C09K21/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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