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US 11,851,591 B2Granted
Environment-friendly hot-melt composition for vehicle interior material
AssigneesHyundai Motor Company, Kia Corporation, MUJIN, Inc.
InventorsJin Uk Hwang, Seung Keon Woo, Jae Hong Woo
Life of this patent
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Abstract
Disclosed is an environment-friendly hot-melt composition for a vehicle interior material, the hot-melt composition including: 65 wt % to 85 wt % of an aromatic polyamide; 10 wt % to 30 wt % of an aliphatic polyamide; 1 wt % to 5 wt % of an olefinic elastomer graft-polymerized with maleic anhydride; and 0.1 wt % to 2 wt % of an antioxidant.
Claims10
A hot-melt composition comprising:
- 65 wt % to 85 wt % of an aromatic polyamide;
- 10 wt % to 30 wt % of an aliphatic poly amide;
- and
- 1 wt % to 5 wt % of an olefinic elastomer graft-polymerized with maleic anhydride,
- wherein the hot-melt composition has a first melting-point peak observed at 40° C. to 60° C. and a second melting-point peak observed at 100° C. to 110° C. upon thermal analysis using differential scanning calorimetry (DSC).
2 more elements
A vehicle interior material comprising:
- a substrate;
- an adhesive layer comprising a hot-melt composition and disposed on the substrate, the hot-melt composition comprising:
- 65 wt % to 85 wt % of an aromatic polyamide,
- 10 wt % to 30 wt % of an aliphatic polyamide, and
- 1 wt % to 5 wt % of an olefinic elastomer graft-polymerized with maleic anhydride;
- and
- a skin layer disposed on the adhesive layer,
- wherein the hot-melt composition has a first melting-point peak observed at 40° C. to 60° C. and a second melting-point peak observed at 100° C. to 110° C. upon thermal analysis using differential scanning calorimetry (DSC).
5 more elements
Dependencies are inferred from the claim text.