Use of 2,2,6,6 tetraalkylpiperidine-N-oxyl radicals having long alkyl chains as polymerization regulators
申请人:Wunderlich Wiebke
公开号:US06864313B2
公开(公告)日:2005-03-08
The present invention relates to a polymerizable composition, comprising
a) at least one ethylenically unsaturated monomer or oligomer,
b) a radical source capable of starting polymerization of the ethylenically unsaturated monomer or oligomer and
c) at least one compound of formula (I)
wherein
n is 1 or 2
R
3
, R
4
, R
9
, R
10
are each independently of one another C
1
-C
18
alkyl, C
2
-C
18
alkenyl or C
2
-C
18
alkinyl; or
R
3
and R
4
and/or R
9
and R
10
form together with the linking carbon atom a C
3
-C
12
cycloalkyl radical;
R
5
, R
6
, R
7
, R
8
are each independently of one another hydrogen, C
1
-C
18
alkyl, C
2
-C
18
alkenyl or C
2
-C
18
alkinyl;
X is —O—, —O—C(O)—, —NR
2
— or —NR
2
—C(O)—;
R
2
is hydrogen, C
1
-C
18
alkyl or phenyl;
if n is 1,
R
1
is C
8
-C
38
alkyl, C
8
-C
36
alkenyl or C
8
-C
36
alkinyl
if n is 2
R
1
is C
10
-C
38
alkylen, C
10
-C
36
alkenylen or C
10
-C
36
alkinylen.
Further objects of the present invention are a process for polymerization and the use of compounds of formula I for the polymerization of ethylenically unsaturated monomers.
本发明涉及一种可聚合的组合物,包括a)至少一种乙烯不饱和单体或寡聚物,b)能够启动乙烯不饱和单体或寡聚物聚合的自由基源和c)至少一种式(I)的化合物,其中n为1或2,R3、R4、R9、R10分别独立地为C1-C18烷基、C2-C18烯基或C2-C18炔基;或者R3和R4和/或R9和R10与连接碳原子一起形成C3-C12环烷基基团;R5、R6、R7、R8分别独立地为氢、C1-C18烷基、C2-C18烯基或C2-C18炔基;X为—O—、—O—C(O)—、—NR2—或—NR2—C(O)—;R2为氢、C1-C18烷基或苯基;若n为1,则R1为C8-C38烷基、C8-C36烯基或C8-C36炔基;若n为2,则R1为C10-C38亚烷基、C10-C36烯亚烷基或C10-C36炔亚烷基。本发明的另一目的是一种聚合过程和利用式I化合物进行乙烯不饱和单体聚合的方法。