Silane-type coupling agent, process for its preparation, and its use for the production of a conducting coating on glass

Abstract

The coupling agent is comprised of a pyrrolidyl group capable of being incorporated in the chain of an electroconducting polymer, and a silane group --Si(OR 1 ) 3 which may be chemically bound to a glass substrate in order to form an adherent coating of said polymer. It is obtained by an addition reaction implementing an epoxide function and a primary or secondary amine function.

What is claimed is: 
     
       1. A compound of formula   . .Py--R.sup.2 (--CHOH--CH.sub.2).sub.a --).sub.x NR.sub.p.sup.4  --(CH.sub.2 --CHOH).sub.1-a --R.sup.3 --Si(--OR.sup.1)3!.sub.y .!.       .Iadd. Py--R.sup.2 (--CHOH--CH.sub.2).sub.a --!.sub.x NR.sub.p.sup.4  --(CH.sub.2 --CHOH).sub.1-a --R.sup.3 --Si(--OR.sup.1).sub.3 !.sub.y .Iaddend.     wherein   Py is the pyrrolidyl radical ##STR5##  which is optionally substituted in at least one of the positions 3 and 4, R 1  is selected from the group consisting of CH 3  and C 2  H 5 ,   R 2  is selected from the group consisting of CH 2  and (CH 2 ) 3 ,   R 3  is selected from the group consisting of (CH 2 ) 3  and CH 2  O--(CH 2 ) 3 ,   R 4  is selected from the group consisting of CH 3  and H,   a is 0 or 1,   x is 1 or 2, with the proviso that x is 1 . .is.!. .Iadd.if .Iaddend.a is 0,   y is 1 or 2, with the proviso that y is 1 . .is.!. .Iadd.if .Iaddend.a is 1, and   p is equal to . .2-x-y.!. .Iadd.3-x-y.Iaddend..   
     
     
       2. A compound according to claim 1, wherein a is 1. 
     
     
       3. A compound according to claim 2, wherein x is 2. 
     
     
       4. A compound according to claim 1, wherein a is 0. 
     
     
       5. A compound according to claim 4, wherein y is 1. 
     
     
       6. A compound according to claim . .2.!. .Iadd.4.Iaddend., wherein y is 2. 
     
     
       7. A compound according to claim 3, wherein R 1  is C 2  H 5 , R 2  is CH 2  and R 3  is (CH 2 ) 3 . 
     
     
       8. A compound according to claim 5, wherein R 1  is CH 3 , R 2  is (CH 2 ) 3 , and R 3  is CH 2  --O--(CH 2 ) 3 . 
     
     
       9. A compound according to claim 6, wherein R 1  is CH 3 , R 2  is (CH 2 ) 3 , and R 3  is CH 2  --O--(CH 2 ) 3 .