Shin-Etsu Silicone : Flexible, heat crack-resistant, and impact-resistant silicone oligomers

New Products

Flexible, heat crack-resistant, and impact-resistant silicone oligomers

X-48-1501

X-48-1501 is a methylpheny silicone oligomer with high hardness and excellent flexibility, heat crack resistance, and impact resistance. This is a new line of functional silicone oligomers, and coating formulations will be expected to expand.

Features

Excellent high hardness and flexibility
Excellent heat crack resistance and impact resistance.
Non solvent type
By using a catalyst, it reacts with moisture at room temperature.
Cataryst: KBE-903 or D-26

Application

Raw material and additive for coating.

Product line

General properties

Type		High functional silicone oligomer			General silicone oligomer
Product name		X-48-1500	X-48-1600	X-48-1501	KR-500	KR-510
Alkoxysilyl group		Methoxy group	Ethoxy group	Methoxy group	Methoxy group	Methoxy group
Type		Methyl	Methyl	Methyl and Phenyl	Methyl	Methyl and Phenyl
Appearance		Transparent liquid	Transparent liquid	Transparent liquid	Transparent to pale yellow slightly cloudy liquid	Transparent liquid
Active ingredient %		100	100	100	100	100
Viscosity at 25°C mm²/s		50	15	200	25	100
Specific gravity at 25°C		1.17	1.09	1.16	1.15	1.16
Refractive index at 25°C		1.41	1.41	1.48	1.40	1.51
Comparison	Curing speed	Excellent	Good	Average	Good	Poor
	Hardness	Good	Good	Excellent	Good	Average
	Flexibility	Excellent	Excellent	Excellent	Poor	Excellent
	Heat crack resistance	Average	Good	Excellent	Poor	Excellent
	Impact resistance	Average	Good	Excellent	Poor	Excellent

(Not specified values)

Properties of film

Parameter Product name	X-48-1501
Catalyst	KBE-903 (C₂H₅O)₃SiC₃H₆NH₂	D-26 Titanium type
Curing condition	25°C / 50% RH
Catalyst: Addition quantity	2 parts by mass
Tack-free time	6 h	24 h
Pencil hardness (load 750 g)^*1	2H	F
Flexibility (mandrel bend test)^*1	2 mmφ	2 mmφ
Cross-cut adhesion test^*1	25/25	25/25
Heat crack resistance^*2	Excellent	Excellent
Impact resistance^*3	30 cm	› 50 cm

*1 Substrate: Aluminum sheet (film thickness: 30 µm) After 7 days
*2 Substrate: Aluminum sheet After 25°C×2 days+200°C×24 h heat)
*3 Substrate: Polished steel sheet After 25°C×7 days Dupont impact tester

(Not specified values)

Film properties

Product name	Flexibility	Heat crack resistance	Impact resistance
X-48-1501	Good	Good	Good
Conventional product	Bad	Bad	Bad