Sandable polyurethane adhesive composition and laminates made th

Details Sandable polyurethane adhesive composition and laminates made th Sandable polyurethane adhesive composition and laminates made th

1977-09-21

1978-06-27

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AK, C08L 7508

Patent

active

040974421

ABSTRACT:
A polyurethane adhesive that is sandable when cured, the adhesive being the reaction product of a mixture of about one mol of a polyester polyol or polyether polyol of 2-4 hydroxyls having a molecular weight of 500 to about 3000 and 2.5 to 7 mols of isocyanate composition of a mixture of toluene diisocyanate and methane di(phenyl isocyanate) containing a filler composed of silica platelets and glass spherical platelets, a plasticizer amount of polyvinyl chloride plasticizer and a curative amount of monomeric nitrogen containing tetraol of 200 to 1000 molecular weight.

REFERENCES:
patent: 3607825 (1971-09-01), Shannon
patent: 3824201 (1974-07-01), McGranaghan et al.

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