申请人:Cunningham Allan Francis
公开号:US20110311786A1
公开(公告)日:2011-12-22
The present invention provides heat-sensitive coating compositions, which comprise a colour developer of formula (1) or mixtures thereof wherein R can be hydrogen, C
1-20
-alkyl, C
3-8
-cycloalkyl, C
2-10
-alkenyl, aryl or SO
3
H, and R
2
and R
3
can be the same or different and can be hydrogen, halogen, C
1-20
-alkyl, C
3-8
-cyclo-alkyl, C
2-10
-alkenyl, aryl, OR
6
, NR
7
R
8
, SR
9
, SO
3
H or COOR
10
and R
4
and R
5
can be the same or different, and can be hydrogen, halogen, C
1-20
-alkyl, C
3-8
-cyclo-alkyl, C
2-10
-alkenyl, aryl, OR
6
, NR
7
R
8
or SR
9
, R
6
, R
7
, R
8
, R
9
and R
10
can be the same or different and can be hydrogen, C
1-30
-alkyl, C
3-8
-cycloalkyl, C
2-10
-alkenyl or aryl, wherein C
1-20
-alkyl can be unsubstituted or substituted with one or more C
3-8
-cycloalkyl, C
2-10
-alkenyl, phenyl, halogen, OR
11
, NR
12
R
13
, SR
14
, SO
3
H or COOR
15
, and aryl can be unsubstituted or substituted with one or more halogen, C
1-10
-alkyl, halogenated C
1-10
-alkyl, C
3-8
-cycloalkyl C
2-10
-alkenyl, phenyl, OR
11
, NR
12
R
13
, SR
14
, SO
3
H or COOR
15
, wherein R
11
, R
12
, R
13
, R
14
and R
15
can be the same or different and can be hydrogen, C
1-10
-alkyl, C
3-8
-cycloalkyl or C
2-10
-alkenyl, a process for the preparation of these compositions, a process of coating substrates with these compositions, substrates coated with these compositions, a process for preparing marked substrates using these compositions, marked substrates obtainable by the latter process, and certain colour developers.