Claims
- 1. A process for making molded articles, films and fibers, said process comprising melt processing a thermotropic liquid crystalline polyester comprising:
- a) units derived from at least one aromatic bicarboxylic acid in a mole percentage of 50% with respect to the total mole amount;
- b) units derived from a substituted hydroquinone ##STR2## where R is selected from the group consisting of (1-phenylethyl), (1-methyl-1-phenylethyl), benzyl, benzoyl, phenoxy, and mixtures thereof, optionally substituted, in a mole percentage of from 37.5% to 40% with respect to the total mole amount;
- c) units derived from hydroquinone in a mole percentage of from 10% to 12.5 % with respect to the total mole amount.
- 2. The process of claim 1, wherein the substituted hydroquinone is selected from the group consisting of (1-phenylethyl)hydroquinone or (1-methyl-1-phenylethyl)hydroquinone or mixtures thereof.
- 3. The process of claim 1, wherein the aromatic bicarboxylic acid is present in at least a mole percentage of 90% in an isomeric form in which the carboxylic groups-aromatic ring bonds are parallel or coaxial to each other.
- 4. The process of claim 1, wherein the bicarboxylic acid is selected from the group consisting of terephthalic acid, chloro, bromo-terephthalic acid, methylterephthalic acid, 1,4-, 1,5-, 2,6-naphtalendicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 3,3'-dibromo-4,4'- diphenyldicarboxylic acid and mixtures thereof.
Parent Case Info
This is a continuation of U.S. application Ser. No. 08/326,811, filed Oct. 20, 1994 now abandoned, which is a continuation of Ser. No. 08/170,506, filed Dec. 20, 1993, now abandoned, which is a continuation of U.S. application Ser. No. 07/912,553, filed Jul. 13, 1992, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4529565 |
Kasatani et al. |
Jul 1985 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
0323126 |
Jul 1989 |
EPX |
59-030821 |
Feb 1984 |
JPX |
Continuations (3)
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Number |
Date |
Country |
Parent |
326811 |
Oct 1994 |
|
Parent |
170506 |
Dec 1993 |
|
Parent |
912553 |
Jul 1992 |
|