Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1994-01-13
1994-12-13
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524549, 524504, 524413, C08L 3700
Patent
active
053730453
ABSTRACT:
A latex which affords a film having superior heat resistance, gloss, and transparency is comprised of: (1) water; (2) a styrene-maleic anhydride copolymer solubilized by a solubilizing amount of ammonium hydroxide; (3) a graft copolymer which is comprised of a portion of the solubilized styrenemaleic anhydride copolymer onto which is grafted a polymer formed from the polymerization of one or more polymerizable ethylenically unsaturated monomers selected from the group consisting of an acrylate, a methacrylate, an aromatic alkenyl monomer, an aliphatic alkenyl monomer, and combinations thereof; (4) a polymer dispersed in the water which is comprised of one or more ethylenically unsaturated monomers selected from the group consisting of an acrylate, a methacrylate, an aromatic alkenyl monomer, an aliphatic alkenyl monomer, and combinations thereof dispersed in the water; (5) a nonionic or anionic surfactant, or a combination thereof; and, (6) optionally, zinc or zirconyl ammonium carbonate. The latex has pH in the range of from about 9.0 to about 11.0.
REFERENCES:
patent: 3903034 (1975-09-01), Zabiak et al.
patent: 4339370 (1982-07-01), Parker
patent: 4623692 (1986-11-01), Hansen
patent: 4730019 (1988-03-01), Hansen
patent: 4820773 (1989-04-01), Alexander et al.
Boucher Steven P.
Grinstein Reuben H.
Smith George A.
Henkel Corporation
Jaeschke Wayne C.
Schofer Joseph L.
Smith Jeffrey T.
Szoke Ernest G.
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