WHOLLY AROMATIC LIQUID CRYSTAL POLYESTER RESIN COMPOUND, PREPARATION METHOD THEREOF, PARTS FOR OPTICAL PICKUP, AND PREPARATION METHOD THEREOF
First Claim
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1. A wholly aromatic liquid crystalline polyester resin compound comprising:
- a first wholly aromatic liquid crystalline polyester resin having a higher melting point (Tm1);
a second wholly aromatic liquid crystalline polyester resin having a lower melting point (Tm2); and
an additive,wherein the higher melting point Tm1 of the first wholly aromatic liquid crystalline polyester resin and the lower melting point Tm2 of the second wholly aromatic liquid crystalline polyester resin satisfy the following condition;
370°
C.≦
Tm1≦
440°
C.,
310°
C.≦
Tm2≦
380°
C., and
20°
C.≦
Tm1−
Tm2≦
80°
C.
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Abstract
Disclosed are a wholly aromatic liquid crystal polyester resin compound, a preparation method thereof, parts for optical pickup, and a preparation method thereof. The disclosed wholly aromatic liquid crystal polyester resin compound comprises two kinds of wholly aromatic liquid crystal polyester resins having different melting points and an additive, and most of the terminal groups in the resins having lower melting points among the resins comprise a carboxyl group.
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Citations
13 Claims
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1. A wholly aromatic liquid crystalline polyester resin compound comprising:
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a first wholly aromatic liquid crystalline polyester resin having a higher melting point (Tm1); a second wholly aromatic liquid crystalline polyester resin having a lower melting point (Tm2); and an additive, wherein the higher melting point Tm1 of the first wholly aromatic liquid crystalline polyester resin and the lower melting point Tm2 of the second wholly aromatic liquid crystalline polyester resin satisfy the following condition;
370°
C.≦
Tm1≦
440°
C.,
310°
C.≦
Tm2≦
380°
C., and
20°
C.≦
Tm1−
Tm2≦
80°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13)
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8. A method of preparing a wholly aromatic liquid crystalline polyester resin compound, the method comprising:
- mixing 100 parts by weight of a first wholly aromatic liquid crystalline polyester resin having a higher melting point Tm1, 5 to 40 parts by weight of a second wholly aromatic liquid crystalline polyester resin having a lower melting point Tm2, and 10 to 100 parts by weight of an additive based on 100 parts by weight of the total amount of the first wholly aromatic liquid crystalline polyester resin and the second wholly aromatic liquid crystalline polyester resin, and melt-kneading the mixture,
wherein the higher melting point Tm1 of the first wholly aromatic liquid crystalline polyester resin and the lower melting point Tm2 of the second wholly aromatic liquid crystalline polyester resin satisfy the following condition;
370°
C.≦
Tm1≦
440°
C.,
310°
C.≦
Tm2≦
380°
C., and
20°
C.≦
Tm1−
Tm2≦
80°
C.
- mixing 100 parts by weight of a first wholly aromatic liquid crystalline polyester resin having a higher melting point Tm1, 5 to 40 parts by weight of a second wholly aromatic liquid crystalline polyester resin having a lower melting point Tm2, and 10 to 100 parts by weight of an additive based on 100 parts by weight of the total amount of the first wholly aromatic liquid crystalline polyester resin and the second wholly aromatic liquid crystalline polyester resin, and melt-kneading the mixture,
Specification