摘要:
Impact modified resin compositions are provided containing bi-lobed graft copolymers. The lobed graft copolymers contain a rigid lobe and a rubbery lobe. The rubber lobes exhibit an affinity for each other and tend to agglomerate during compounding resulting in large rubber particle sizes which provide the compositions with reduced gloss. The resin compositions are useful as molding resins.
摘要:
Refrigerator and freezer liners are molded from rubber modified graft copolymers of acrylonitrile and methyl acrylate. These polymers comprise 14 to 30 percent by weight of a butadiene-acrylonitrile elastomer rubber. Further these polymers show excellent impact strength at low temperatures and are resistant to solvents used as blowing agents for refrigerator and freezer insulation.
摘要:
A printing ink composition is prepared containing a pigment and a polymer emulsion which comprises a first polymer network which is intertwined on a molecular scale with a second polymer network.
摘要:
A process is provided which prepares an aqueous polymer emulsion containing an interpenetrating polymer network. This polymer emulsion is useful as a binder, adhesive or coating.
摘要:
Elastomers are plasticized with a polymerizable monomer, in homogeneous admixture therewith, by adding the monomer to a latex of the elastomer, free of polymerization initiator, followed by coagulation of the monomer and polymer solids. The coagulated solids recovered from the latex may be compounded with a polymerization initiator for the monomer and a vulcanizing agent for the polymer and, optionally, an inorganic filler, and shaped into the desired product form. Polymerization of the polymer and vulcanization of the elastomeric polymer are initiated after shaping.
摘要:
Thermoplastic core-shell compositions having a rigid core, a rubbery acrylic shell and transition layer intermediate between the core and shell layers and formed of the core and shell monomer components have excellent elastomeric properties. Although the rigid and rubbery components include interreactive functional monomers, the resulting elastomers remain thermally processable in extrusion and injection molding equipment.
摘要:
Formation of undesired by-product adduct during production of acrylonitrile-butadiene-styrene-acrylate copolymers is controlled by subjecting the inhibitor containing reaction mixture to a molecular-oxygen-containing gaseous atmosphere during addition of the acrylate monomer.
摘要:
A continuous process for polymerizing a monomer mixture of acrylate and diolefinic compound in the presence of a copolymeric matrix of styrene and acrylonitrile.
摘要:
Impact-resistant polymers which have low permeability to gases and vapors are prepared by polymerizing an olefinic nitrile, such as acrylonitrile, optionally with an acrylic ester, such as methyl acrylate, to at least about 70% conversion, and then introducing into the polymerization reaction medium a conjugated diene monomer, such as butadiene-1,3, and completing the polymerization reaction in the presence of said diene monomer.