申请人:Evans Samuel
公开号:US20070088108A1
公开(公告)日:2007-04-19
The present invention discloses liquid cyclic phosphites of for example the formula
where n is 1 or 2; when n is 1, R
17
is straight or branched chain alkyl of 1 to 18 carbon atoms, when n is 2, R
17
is —C
t
H
2t
— or —CH
2
CH
2
-T
3
-CH
2
CH
2
— where T
3
is —S— or >N—R
22
where R
22
is straight or branched chain alkyl of 1 to 12 carbon atoms and t is an integer of from 2 to 6, R
1
, R
2
, R
3
, R
4
, R
5
and R
6
are independently hydrogen, methyl, ethyl, i-propyl, n-propyl, n-butyl, sec-butyl or t-butyl and R is hydrogen. Also disclosed is a stabilized composition comprising polyolefin and a present liquid cyclic phosphite and a process for the stabilization of polyolefin by incorporating therein or applying thereto a present liquid cyclic phosphite. The present liquid phosphite stabilizers are especially compatible with polyolefins.
本发明揭示了液态环状磷酸酯,例如式中的n为1或2;当n为1时,R17为1至18个碳原子的直链或支链烷基,当n为2时,R17为—CtH2t—或—CH2CH2-T3-CH2CH2—,其中T3为—S—或>N—R22,其中R22为1至12个碳原子的直链或支链烷基,t为2至6的整数,R1、R2、R3、R4、R5和R6分别为氢、甲基、乙基、异丙基、正丙基、正丁基、仲丁基或叔丁基,R为氢。还公开了一种稳定的组合物,包括聚烯烃和现有的液态环状磷酸酯以及一种通过在其中加入或应用现有的液态环状磷酸酯来稳定聚烯烃的过程。现有的液态磷酸酯稳定剂与聚烯烃特别相容。