US 9,870,970 B2Granted

Cured product

AssigneeLG Chem, Ltd.

InventorsMin Jin Ko, Kyung Mi Kim, Jae Ho Jung, Bum Gyu Choi, Min Kyoun Kim

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Abstract

The present application relates to a cured product and the use thereof. When the cured product, for example, is applied to a semiconductor device such as an LED or the like, the decrease in brightness may be minimized even upon the long-term use of the device, and since the cured product has excellent cracking resistance, the device having high long-term reliability may be provided. The cured product has excellent processability, workability, and adhesive properties or the like, and does not cause whitening and surface stickiness, etc. Further, the cured product exhibits excellent heat resistance at high temperature, gas barrier properties, etc. The cured product may be, for example, applied as an encapsulant or an adhesive material of a semiconductor device.

Claims14

Dependent claims

A cured product, which is a reaction product of a mixture comprising an aliphatic unsaturated bond functional polyorganosiloxane and a compound having hydrogen atoms bound to silicon atoms, and which comprises a unit of the following Formula 1 and a siloxane unit of the following Formula 2, wherein a ratio (C/Si) of the number of moles of carbon atoms (C) which are present in A of the following Formula 1 to the total number of moles of silicon atoms (Si) is in a range of 0.15 to 0.55, and a ratio (T/Si) of the number of moles of a siloxane unit of the following Formula 2 (T) to the total number of moles of silicon atoms (Si) is in a range of 0.3 to 0.6:

(R2SiO1/2A1/2) [Formula 1]
(RSiO3/2) [Formula 2]
where, in Formulas 1 and 2, each R is independently hydrogen, an epoxy group, or a monovalent hydrocarbon group, and A is an alkylene group having 2 to 4 carbon atoms, wherein the aliphatic unsaturated bond functional polyorganosiloxane shows an average unit of the following Formula 5:
PaObSiO(4-a-b)/2 [Formula 5]
where, in Formula 5, P is an alkenyl group, Q is an epoxy group, or a monovalent hydrocarbon group, a and b are numbers such that a+b is in a range of 1 to 1.9, and a/(a+b) is in a range of 0.06 to 0.15.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/035,903Filed 28 Jan 2015
Priority: KR 10-2014-001001228 Jan 2014
Published: US 2016/0257788 A18 Sep 2016
Granted: 16 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification32 codes

H10W 74/476
Comprising organic materials, e.g. plastics or resins: organic materials comprising silicon
C08G 77/08
Preparatory processes: characterised by the catalysts used
C08G 77/12
Polysiloxanes: containing silicon bound to hydrogen
C08G 77/20
Polysiloxanes: containing silicon bound to unsaturated aliphatic groups