专利类型:
相变材料专利导航
公开(公告)号:
EP0372958A3
申请日:
1989-12-07
申请局:
EP
摘要:
The invnetion relates to a composite particle comprising
2 to 98% by weight of a base resin having a softending point
of -10° to 120°C and a number average molecular weight of
600 or more and 98 to 2% by weight of an anisotropic
crystalline polymer having a phase transition point of 60°
to 230°C and a number average molecular weight of 600 to
10,000 and capable of forming an anisotropic molten phase,
the polymner having the specific structure in which a
repeating unit of the formula: A-X-B (I)
(wherein 100 to 50 mol % of A stands for defined mesogenic
group, 0 to 50 mole % of A is p-phenylene, m-phenylene or
trans-1,4-cyclohexylene, B is a defined spacer group, and
X is ester bond, carbonate bond, amide bond, urethane bond
or urea bond, and a repeating unit of the formula: R (II)
in which R stands for bivalent to hexavalent hydrocarbon
residue, are connected , in any successive orders and in
a weight ratio of (I)/(II)= 99.9/0.1 to 60/40, with each
other through ester bond, carbonate bond, amide bond,
urethane bond or urea bond, and end portions are occupied
by a functional group as hydroxyl , carboxyl and the like.
The composite particle is useful as powder coating , dry
toner and the like.
原始专利权人:
NIPPON PAINT CO., LTD.
当前专利权人:
Nippon Paint Co Ltd