Title:
THERMALLY CONDUCTIVE SILICONE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/019504
Kind Code:
A1
Abstract:
A composition contains: (A) a curable silicone composition including: (a1) a vinyldimethylsiloxy-terminated polydimethylpolysiloxane having a viscosity in a range of 30-400 milliPascal*seconds, (a2) a silicon-hydride functional crosslinker, and (a3) a hydrosilylation catalyst, where the molar ratio of silicon-hydride functionality from the crosslinker to vinyl functionality is in a range of 0.5: 1 to 1: 1; (B) a filler treating agent comprising one or both of an alkyl trialkoxysilane and a mono-trialkoxysiloxy terminated dimethylpolysiloxane; and (C) a thermally conductive filler mixture including (c1) 40-55 wt%of aluminum nitride fillers, containing a blend of: (c1-a) 15-41 wt%of spherical aluminum nitride particles having a D50 particle size of 100 micrometers or more, and (c1-b) spherical or irregular shaped aluminum nitride particles having a D50 particle size of 20-80 micrometers; (c2) spherical aluminum oxide particles having a D50 particle size of 1-5 micrometers; and (c3) 10-20 wt%of irregular zinc oxide particles having a D50 particle size of 0.1-0.5 micrometer; where the total amount of the thermally conductive filler mixture is 94-97 wt%; and where wt%values are relative to the weight of the thermally conductive composition unless otherwise stated.
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Inventors:
ZHENG YAN (CN)
BHAGWAGAR DORAB (US)
GE QIANQING (CN)
WEI PENG (CN)
WU HANGUANG (CN)
BHAGWAGAR DORAB (US)
GE QIANQING (CN)
WEI PENG (CN)
WU HANGUANG (CN)
Application Number:
PCT/CN2021/113465
Publication Date:
February 23, 2023
Filing Date:
August 19, 2021
Export Citation:
Assignee:
DOW SILICONES CORP (US)
ZHENG YAN (CN)
BHAGWAGAR DORAB (US)
GE QIANQING (CN)
WEI PENG (CN)
WU HANGUANG (CN)
ZHENG YAN (CN)
BHAGWAGAR DORAB (US)
GE QIANQING (CN)
WEI PENG (CN)
WU HANGUANG (CN)
International Classes:
C08K3/38; C08L83/04; C09D183/04; C09J183/04
Domestic Patent References:
| WO2021109051A1 | 2021-06-10 |
Foreign References:
| CN112805334A | 2021-05-14 | |||
| US5883215A | 1999-03-16 | |||
| US3159601A | 1964-12-01 | |||
| US3220972A | 1965-11-30 | |||
| US20060100336A1 | 2006-05-11 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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