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| Integrated, reconfigurable man-portable modular system |
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| Remote controlling |
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| Power line communications |
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Liquid-crystalline resin compositions and moldings
| Details |
Inventors: Umetsu, Hideyuki; Makabe, Yoshiki; Inoue, Toshihide;
Assignee: Toray Industries, Inc. (JP)
Primary Examiner: Boykin; Terressa M.
Assistant Examiner:
Attorney, Agent or Firm: Miller; Austin R.
A liquid-crystalline resin composition comprising 100 parts by weight of a semi-aromatic liquid-crystalline polyester and/or a semi-aromatic liquid-crystalline polyester-amide, from 0.001 to 5 parts by weight of at least one or more compounds selected from phosphorous acid, hypophosphorous acid and their salts, and from 0.01 to 10 parts by weight of red phosphorus has good flame retardancy, low anisotropy, good heat resistance and good hydrolysis resistance, and is useful as engineering plastic. |
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DETAILED DESCRIPTION What is claimed is: 1.
A liquid-crystalline resin composition comprising 100 parts by weight of a semi-aromatic liquid-crystalline compound selected from the group consisting of polyester and polyester-amide, from 0.
001 to 5 parts by weight of at least one or more compounds selected from the group consisting of phosphorous acid and hypophosphorous acid and their salts with a metal selected from the group consisting of Group I and Group II metals, and from 0.
01 to 10 parts by weight of red phosphorus.
2.
A liquid-crystalline resin composition comprising a semi-aromatic liquid-crystalline compound selected from the group consisting of polyester and polyester-amide, which has a phosphorus content of from 0.
01 to 15% by weight, and a metal selected from the group consisting of Group I and Group II metals in a content of from 5 to 15000 ppm, the ratio of said phosphorus content (a) to said metal content (b) being not smaller than 1.
5.
3.
The liquid-crystalline resin composition as claimed in claim 2, wherein said phosphorus content is derived from at least one or more compounds selected from the group consisting of phosphorous acid, hypophosphorous acid and their salts, and red phosphorus.
4.
The liquid-crystalline resin composition as claimed in claim 2, wherein said metal component is derived from one or more metal-containing compounds selected from the group consisting of Group I and Group II metal salts of phosphorous acid, Group I and Group II metal salts of hypophosphorous acid, and Group I and Group II metal salts of compounds except phosphorous acid and hypophosphorous acid.
5.
The liquid-crystalline resin composition as claimed in claim 1, wherein the red phosphorus is coated with a thermosetting resin.
6.
The liquid-crystalline resin composition as claimed in claim 1, which further contains from 5 to 200 parts by weight of an inorganic filler relative to 100 parts by weight of said liquid-crystalline resin composition of claim 1.
7.
The liquid-crystalline resin composition as claimed in claim 1, wherein said semi-aromatic liquid-crystalline polyester is has structural units selected from the group consisting of (I), (III) and (IV), and structural units of the following (I), (II), (III) and (IV): ##STR6## where R
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Cell Phones 
