Hot melt composition
View Patent ↗The present technology provides a hot melt composition containing: styrene-based thermoplastic elastomer having a weight average molecular weight of 300000 or more; tackifier; a first paraffin oil having a weight average molecular weight of 1000 or more; and a second paraffin oil having a weight average molecular weight of less than 1000.
1. A hot melt composition, containing:
a styrene-based thermoplastic elastomer having a weight average molecular weight of 300000 or more;
a tackifier;
a first paraffin oil having a weight average molecular weight of 1000 or more; and
a second paraffin oil having a weight average molecular weight of less than 1000 wherein
the tackifier contains aromatic tackifier, and
the tackifier is contained by 100 parts by mass or more per 100 parts by mass of the styrene-based thermoplastic elastomer.
2. The hot melt composition according to claim 1 , wherein the styrene-based thermoplastic elastomer is SEEPS.
3. The hot melt composition according to claim 1 , wherein the first paraffin oil has a mass ratio to the second paraffin oil from 5/95 to 95/5.
4. The hot melt composition according to claim 1 used for a vehicle lamp.
5. The hot melt composition according to claim 2 , wherein the first paraffin oil has a mass ratio to the second paraffin oil from 5/95 to 95/5.
6. The hot melt composition according to claim 2 used for a vehicle lamp.
7. The hot melt composition according to claim 3 used for a vehicle lamp.