Energy saving, expandable, pumpable, anti-flutter compositions for use in automotive body-in-white (BIW) applications
AssigneeUniseal, Inc.
InventorsThanikaivelan Tindivanam Veeraraghavan, Karthikeyan Sengotaiyan, Senthilkumar Veeraraghavan
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Abstract
A low temperature curable anti-flutter composition which cures to form a cured product, including: (a) a first copolymer, wherein the first copolymer comprises a rubber having at least one nitrile functional group; and (b) a second copolymer, wherein the second copolymer comprises a rubber having styrene-butadiene functional groups, wherein the composition is a room temperature pumpable sealant which is capable of expanding and curing at temperatures below 140° C. in less than 15 minutes.
Claims2
A low temperature curable anti-flutter composition, comprising:
- 1.2 wt % pre-crosslinked butadiene-acrylonitrile copolymer rubber;
- 27.0 wt % PVC homopolymer dispersion resin;
- 10.0 wt % PVC homopolymer gelation resin;
- 0.1 wt % organic peroxide curing agent;
- 1.5 wt % calcium oxide;
- 3.3 wt % adhesion promoter;
- 1.0 wt % curing accelerator;
- 0.2 wt % blowing agent;
- 28.0 wt % calcium carbonate filler;
- 5.0 wt % precipitated calcium carbonate thixotropic agent;
- 1.0 wt % wetting agent;
- 0.4 wt % conductive carbon black;
- 0.5 wt % antioxidant;
- 10.0 wt % linear nonyl phthalate plasticizer;
- 5.5 wt % high solvating non-phthalate plasticizer;
- 5.5 wt % triaryl phosphate plasticizer;
- and wherein the composition exhibits a viscosity of 565 pascal-seconds at 25° C. and cures at 140° C. in 15 minutes to produce 30% volume expansion.
A low temperature curable anti-flutter composition, consisting of:
- 1.2 wt % pre-crosslinked butadiene-acrylonitrile copolymer rubber;
- 27.0 wt % PVC homopolymer dispersion resin;
- 10.0 wt % PVC homopolymer gelation resin;
- 0.1 wt % organic peroxide curing agent;
- 1.5 wt % calcium oxide;
- 3.3 wt % adhesion promoter;
- 1.0 wt % curing accelerator;
- 0.2 wt % blowing agent;
- 28.0 wt % calcium carbonate filler;
- 5.0 wt % precipitated calcium carbonate thixotropic agent;
- 1.0 wt % wetting agent;
- 0.4 wt % conductive carbon black;
- 0.5 wt % antioxidant;
- 10.0 wt % linear nonyl phthalate plasticizer;
- 5.5 wt % high solvating non-phthalate plasticizer;
- 5.5 wt % triaryl phosphate plasticizer;
- and wherein the composition exhibits a viscosity of 565 pascal-seconds at 25° C. and cures at 140° C. in 15 minutes to produce 30% volume expansion.
Dependencies are inferred from the claim text.