C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 55/02 (2006.01) B29C 65/54 (2006.01) C08L 27/06 (2006.01) C08L 27/24 (2006.01) C08L 33/04 (2006.01) C08L 33/24 (2006.01)
Patent
CA 2131342
A method of adhesively bonding or welding a first plastic surface to a second plastic surface is described which comprises the steps of: (I) applying to the first surface or second surface or both surfaces, a composition which is free of hollow microspheres and comprises a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one water-insoluble polymer selected from acrylic polymers, vinyl aromatic polymers and vinyl-pyrrolidone polymers; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B); (II) contacting the first surface with the second surface; and (III) allowing the adhesive composition to form a bond or weld between the first surface and the second surface. The invention also relates to compositions which comprise a mixture of (A) from about 5% to about 60% by weight of at least one water-insoluble polymer selected from ABS, PVC, CPVC or mixtures thereof; (B) from about 1% to about 60% by weight of at least one imide-containing acrylic copolymer; and (C) from about 10% up to about 90% by weight of at least one volatile organic liquid which is a solvent for polymers (A) and (B).
Bush Charles N.
Naton Paul E.
Moffat & Co.
Oatey Company
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