摘要:
A tubular casing having a circular-cylindrical inside surface contains and engages a hollow cylindrical elastomeric annulus under compression. The casing has vertical elongated openings which correspond to and align with slits through the annulus to accept the hook of a fishing lure. At least one casing-annulus device may be detachably fixed within a case.
摘要:
Polymers comprising pendant amine-functional portions linked to a perfluorocarbon moiety having a perfluoroalkyl group. Such polymers can provide coating compositions which exhibit critical surface tensions of wetting of less than about 15 dynes/cm.
摘要:
Highly adherent release compositions having very low surface tensions comprise a polymer containing a pendant benzyl portion linked through a benzyl ester linkage to a perfluorocarbon moiety. Such compositions will not wet with any common solvents. Such compositions are most advantageously employed as release coatings on internal surfaces of molding apparatus.
摘要:
The adhesion of hydrophobic coatings to ferrous or siliceous articles is enhanced by first coating said articles with a primer comprising (a) a water-soluble cross-linkable polymer bearing a plurality of carboxyl groups, (b) a water-soluble cyclic sulfonium zwitterion or melamine cross-linking agent, and (c) a silane. The novel primers are thermally-curable film-forming compositions which are particularly useful in coating glass and ferrous articles.