Sealant composition
AssigneeToyoda Gosei Co., Ltd.
InventorsMasato Kawamura, Akira Mabuchi, Koji Wakabayashi, Etsuro Mori, Yoshihiro Miura
Life of this patent
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Abstract
The sealant composition disclosed herein is favorable for sealing car parts. The sealant composition is charged inside the trim of a weather strip of a car so as to seal the gap between the trim and the plate flange as inserted inside the trim. The sealant composition comprises a liquid rubber as the base component, a tackifier and a thixotropy promoter as secondary components, and a nonvolatile plasticizer and/or a process oil as the dispersion medium.
Claims14
A sealant composition suitable for sealing vehicle parts, said sealant composition comprising, as ingredients prior to combination:
- a liquid rubber;
- a tackifier;
- a thixotropy promoter;
- and
- at least one dispersion medium selected from the group consisting of a nonvolatile plasticizer and a process oil, the dispersion medium being compatible or miscible with the liquid rubber, the tackifier and the thixotropy promoter, said dispersion medium further being present in an effective amount to permit dispersion of said liquid rubber, said tackifier, and said thixotropy promoter,
- wherein said sealant composition is substantially free of volatile organic solvents.
A method of preparing a sealant composition, said method comprising mixing and thereby uniformly dispersing a liquid rubber, a tackifier, and a thixotropy promoter with at least one dispersion medium selected from the group consisting of a nonvolatile plasticizer and a process oil, the dispersion medium being compatible or miscible with the liquid rubber, the tackifier and the thixotropy promoter,
- wherein said sealant composition is substantially free of volatile organic solvents.
A method of preparing a sealant composition, said method comprising mixing and thereby uniformly dispersing a liquid rubber, a tackifier, and a thixotropy promoter with at least one dispersion medium selected from the group consisting of a nonvolatile plasticizer and a process oil, the dispersion medium being compatible or miscible with the liquid rubber, the tackifier and the thixotropy promoter,
- wherein said tackifier comprises a ground resinous tackifier and a liquid tackifier, and
- wherein said sealant composition is substantially free of volatile organic solvents.
Dependencies are inferred from the claim text.