The invention relates to a process for preparing organosilicon group containing photoinitiators of the formula (I), wherein m is a number from 1 to 200; q is 0 or 1; A is IN—C(O)—O—CHR
3
—Y— or IN—C(O)—NH—CHR
3
—Y—; A′ is A or R
1
′; R
1
and R
1
′, R
2
and R
2
′ are C
1
-C
18
alkyl or phenyl, or —(O)
q
—SiR
1
R
1
′R
2
; R
3
is hydrogen or C
1
-C
6
alkyl, Y is a divalent group selected from C
1
-C
10
alkeylene, C
2
-C
10
alkenylene or —(CH
2
)
b
—O—(CH
2
)
a
—; and b are each independently of the other a number of 1 to 6; IN is a photolabile functional moiety of the formula (II) or (III), wherein R
4
is hydrogen or —C(O)—C(O)—OH or —C(O)—C(O)—OC
1
-C
6
alkyl and n is 1-3; R
5
and R
6
are C
1
-C
1-2
alkyl or together are cycloC
5
-C
7
alkyl; R
7
is hydroxy, C
1
-C
6
alkoxy or morpholinyl; X is —(CH
2
)
a
—, —(CH
2
)
b
—O—(CH
2
)
a
— or —(CH
2
)
b
—O—CO—(CH
2
)
a
—; a and b are each independently of the other a number of 1 to 6; whereby the process is characterized in that a photolabile functional moiety containing a carboxy group (IN—COOH) or an alkoxycarbonyl group (IN—CO—OC
1
-C
6
alkyl) is reacted with a carbinol- or amino terminated organosilicon compound of the formula (IV), wherein m, R
1
and R
1
′, R
2
and R
2
′ are as defined above and B is —Y—CHR
3
—OH or —Y—CHR
3
—NH
2
; B′ is B or R
1
′, in the presence of an enzyme which catalyzes the esterification, transesterification or amidation reaction.
                            本发明涉及一种制备含有机
硅基团的式 (I) 光
引发剂的工艺,其中 m 是 1 至 200 的数字;q 是 0 或 1;A 是 IN-C(O)-O-CHR
3
-Y-或 IN-C(O)-NH-CHR
3
-Y-;A′是 A 或 R
1
′; R
1
和 R
1
′, R
2
和 R
2
′为C
1
-C
18
烷基或苯基,或-(O)
q
-SiR
1
R
1
′R
2
; R
3
是氢或 C
1
-C
6
烷基,Y 是二价基团,选自 C
1
-C
10
烯烃、C
2
-C
10
烯烃或-(CH
2
)
b
-O-(CH
2
)
a
-;和 b 分别独立地为 1 至 6 的数目;IN 是式 (II) 或 (III) 的可光化的官能团,其中 R
4
是氢或 -C(O)-C(O)-OH 或 -C(O)-C(O)-OC
1
-C
6
烷基,且 n 为 1-3
5
和 R
6
是 C
1
-C
1-2
烷基或一起为环C
5
-C
7
烷基;R
7
是羟基、C
1
-C
6
烷氧基或吗啉基;X 是-(CH
2
)
a
-、-(CH
2
)
b
-O-(CH
2
)
a
- 或-(CH
2
)
b
-O-CO-(CH
2
)
a
-;a和b各自独立地为1至6的数字;其中,该工艺的特征在于,含有羧基(IN-COOH)或烷氧羰基(IN-CO-OC
1
-C
6
烷基)与式(IV)的以
甲醇或
氨基为末端的
有机硅化合物反应,其中 m、R
1
和 R
1
′, R
2
和 R
2
′如上定义,B为-Y-CHR
3
-OH或-Y-CHR
3
-NH
2
B′ 是 B 或 R
1
′,在催化酯化、酯交换或酰胺化反应的酶存在下。