Coating composition for weatherstrips of automobile vehicles
AssigneeSK Corporation
InventorsHae Lee, Hwan Jung, Young Lee, Ki Kim
Life of this patent
Estimating the term…
Abstract
A coating composition for automobile weatherstrips, in which inexpensive and readily handleable general-purpose polyolefin resins (i.e., a HDPE having MI of 1 dg/min or less, and HDPE having MI of 20 dg/min or more) are used in a coating agent for the preparation of a thin film to protect the portion of a glass run channel that contacts the window glass of an automobile door under pressure when the window is opened and closed by vertical movement of the window glass. The present invention provides economic benefits as well as uniform desired properties.
Claims18
A coating composition for automobile weatherstrips, comprising:
- 100 parts by weight of a polyolefin resin component comprising:
- 5-60 parts by weight of a high viscosity-high density polyethylene resin having a melt index of 1 dg/min or less, and
- 95-40 parts by weight of a low viscosity-high density polyethylene resin having a melt index of 20 dg/min or more;
- and
- 0.01-0.3 parts by weight of a peroxide vulcanizing agent.
A method of preparing a coating agent for automobile weatherstrips, comprising the step of compounding a polyolefin resin component comprising 5-60 parts by weight of a high viscosity-high density polyethylene resin having a melt index of 1 dg/min or less, and 95-40 parts by weight of a low viscosity-high density polyethylene resin having a melt index of 20 dg/min or more, through dynamic vulcanization in the presence of 0.01-0.3 parts by weight of a peroxide vulcanizing agent, based on 100 parts by weight of the polyolefin resin component.
Dependencies are inferred from the claim text.