Title:
POLYORGANOSILOXANE COMPOSITION
Document Type and Number:
Japanese Patent JPH0216161
Kind Code:
A
Abstract:
PURPOSE:To obtain the title composition improved both in the control of oil bleeding and in the mold release properties of a toner and capable of extending the copy life by mixing a polyorgano(hydrogen)siloxane, a polydiorganosiloxane, and a platinum catalyst. CONSTITUTION:A polyorganosiloxane (i) of formula I [wherein R<1> is alkenyl; R<2> is an (un)substituted monovalent group containing no aliphatic unsaturated bond; A<1> is of formula II (wherein l2 is 0 or greater); l1 is a positive integer] is mixed with a polyorganosiloxane (ii) of formula III [wherein A<2> is of formula IV (wherein P1 and P2 are each l2); m1 and n1 are each l1, provided that m1+n1>=2,000] so as to satisfy a relation of formula V, thus giving a polyorganosiloxane (A) having a viscosity (at 25 deg.C) of 20,000cP or higher and at least two units of formula VI (wherein a is 1 to 2, and b is 0 to 2, provided that a+b is 1 to 3) in the molecule. Component A is mixed with a polyorganohydrogensiloxane (B) consisting of units of formula VII [wherein R<3> is an (un)substituted monovalent group; c is b, d is a, and c+d=a+b] and having three or more H atoms attached to an Si atom, a polydiorganosiloxane (C) having a viscosity (at 25 deg.C) of 50-1,000cP and units of formula VIII (wherein R<4> is R<2>; e is 1.9 to 2.2, and f is 0 to 0.1, provided that e+f is 1.9 to 2.2), and a platinum catalyst (D).
Inventors:
IMAI TAKASHI
IIJIMA ATSUSHI
FUJIMOTO TETSUO
IIJIMA ATSUSHI
FUJIMOTO TETSUO
Application Number:
JP16588288A
Publication Date:
January 19, 1990
Filing Date:
July 05, 1988
Export Citation:
Assignee:
TOSHIBA SILICONE
International Classes:
C08L83/05; C08L83/04; C08L83/06; C08L83/07; G03G15/20; (IPC1-7): C08L83/05; C08L83/06; C08L83/07
Domestic Patent References:
| JPS62252457A | 1987-11-04 | |||
| JPS62256863A | 1987-11-09 | |||
| JPS57149354A | 1982-09-14 |
Attorney, Agent or Firm:
Hajime Tsukuni
Next Patent: JPH0216162