Polyvinyl chloride solvent weld primer composition

Details Polyvinyl chloride solvent weld primer composition Polyvinyl chloride solvent weld primer composition

1977-03-18

1978-07-04

Lechert, Jr., Stephen J.

Compositions

Solvents

156294, 156296, B01F 100

Patent

active

040987191

ABSTRACT:
An improved solvent welding primer is described for use particularly in the assembly of polyvinyl chloride pipe and fittings to themselves or polyvinyl chloride pipe or fittings to acrylonitrile-butadiene-styrene pipe or fittings. The primer consists essentially of an organic solvent containing an amount within the range of from about 0.5 percent by weight to about 2.5 percent by weight of an unplasticized polyvinyl chloride resin dissolved in the solvent. The solvent is a mixture of tetrahydrofuran and dimethylformamide having a weight ratio of THF to DMF within the range of from about 1.64:1 to 1:1.

REFERENCES:
patent: 3706691 (1972-12-01), Duffy et al.
patent: 3846332 (1974-11-01), Croix

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