Claims
- 1. A liquid-crystalline polymer composed of repeating units of the formula (I)
- in which
- Y is H or CH.sub.3,
- R.sup.1 is a radical of formulae ##STR28## having at least two chiral centers, R.sup.2 and R.sup.3 are H or a straight-chain or branched, chiral or achiral alkyl having 1 to 16 carbon atoms,
- * and (*) each indicates a chiral carbon,
- a is 2 to 20,
- b,c,d,e and f are 0 or 1 with the proviso that d+e+f=2 or 3,
- A.sup.1, A.sup.2 and A.sup.3 are 1,4-phenylene,
- M.sup.2 and M.sup.3 are identical or different CO--O or O--CO, and
- M.sup.1 is O.
- 2. The liquid-crystalline polymer as claimed in claim 1, wherein a is 6 to 12.
- 3. The ferroelectric, liquid-crystalline polymer composed of repeating units of the formula (I) as claimed in claim 1, wherein
- Y is H or CH.sub.3 and
- the group (--A.sup.1).sub.b (--M.sup.2).sup.c (--A.sup.2).sub.d (--M.sup.3).sub.e (--A.sup.3).sub.f -- is ##STR29##
- 4. The ferroelectric, liquid-crystalline polymer composed of repeating units of the formula (I) as claimed in claim 1, wherein
- Y is H or CH.sub.3,
- a is 6 to 12, and
- the group --M.sup.1 (--A.sup.1).sub.b (--M.sup.2).sub.c (--A.sup.2).sub.d (--M.sup.3).sub.e (--A.sup.3).sub.f -- is ##STR30##
- 5. A process for the preparation of a polymer as claimed in claim 1, which comprises polymerizing compounds of the formula (II) ##STR31## in which Y is H or CH.sub.3,
- R.sup.1 is a radical of formulae ##STR32## having at least two chiral centers, R.sup.2 and R.sup.3 are H or a straight-chain or branched, chiral or achiral alkyl having 1 to 16 carbon atoms,
- * and (*) each indicates a chiral, carbon,
- a is 2 to 20,
- b,c,d,e and f are 0 or 1 with the proviso that d+e+f=2 or 3,
- A.sup.1, A.sup.2 and A.sup.3 are 1,4-phenylene,
- M.sup.2 and M.sup.3 are identical or different CO--O or O--CO, and
- M.sup.1 is 0,
- using a free-radical former.
- 6. An electrooptical component containing a polymer as claimed in claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
38 23 154.9 |
Jul 1988 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/288,581 now abandoned, filed Aug. 10, 1994, which is a continuation of application Ser. No. 08/060,491 filed on May 11, 1993 abandoned, which in turn is a continuation of application Ser. No. 07/635,181 filed on Jan. 3, 1991, abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
4818807 |
Morita et al. |
Apr 1989 |
|
4904065 |
Yuasa et al. |
Feb 1990 |
|
4988459 |
Scherowsky et al. |
Jan 1991 |
|
5336436 |
Scherowsky et al. |
Aug 1994 |
|
Continuations (3)
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Number |
Date |
Country |
Parent |
288581 |
Aug 1994 |
|
Parent |
60491 |
May 1993 |
|
Parent |
635181 |
Jan 1991 |
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