摘要:
A spirodiphosphoamidate-type composition is provided, wherein the composition is represented by the general formula: ##STR1## wherein A and A' are independently selected from the group consisting of oxygen and sulfur; R.sup.1 and R.sup.3 are independently selected from the group consisting of hydrogen, aliphatic, oxyaliphatic, polyoxyaliphatic, cycloaliphatic and aromatic moieties; and R.sup.2 and R.sup.4 are independently selected from the group consisting of C.sub.13 and larger aliphatic, oxyaliphatic, polyoxyaliphatic and aliphatic substituted aryl groups.
摘要翻译:提供螺二磷酸酯型组合物,其中组合物由以下通式表示:其中A和A'独立地选自氧和硫; R 1和R 3独立地选自氢,脂族,脂族,脂族,脂环族和芳族部分; 并且R 2和R 4独立地选自C 13和更大的脂族,脂族,聚氧脂脂族和脂族取代的芳基。
摘要:
An improved method for making alloys of styrenic resins and polyamides. The styrenic resin is first melt-processed with an ethylenically-unsaturated carboxylic compound, optionally in the presence of a free-radical generator, then combined with the polyamide under melt-processing conditions. The compositions remain thermally-processable and generally exhibit good impact properties with little or no delamination.
摘要:
Compositions comprising a vinyl aromatic compound-acrylonitrile copolymer, a nitrile rubber and a graft copolymer thereof possess good rubbery characteristics and are processible as thermoplastics with low mold shrinkage.
摘要:
A vehicle bumper assembly is provided which comprises a substantially tubular reinforcing beam, a face cover, and a means for attaching said face cover to said reinforcing beam such that the reinforcing beam includes a material which has a flexural modulus at 72.degree. F., according to ASTM Standard D-790 (0.05 in./min.) of about 100,000 psi to about 500,000 psi and a deflection temperature according to ASTM Standard D-698 (264 psi) 1/4" thick samples of at least 155.degree. F. The present invention also includes a process for making a vehicle bumper assembly comprising the steps of molding a first material to form a face cover; extrusion molding a second material to form a tubular section; blow molding said tubular section to form a substantially tubular reinforcing beam having means adapted for attaching said reinforcing beam to a vehicle; and attaching said face cover to said reinforcing beam.
摘要:
A thermoplastic molding composition is provided wherein the composition comprises an ABS copolymer, a copolymer of an unsaturated dicarboxylic acid anhydride, and a minor portion of an alkylene oxide copolymer.
摘要:
N-substituted 2,5-dimethylpyrroles and a method for their preparation. The method requires the reaction of a 2,5-hexadione such as acetonylacetone with a urethane or a phosphoroamidate. The reaction is carried out at elevated temperatures, preferably in a water-immiscible solvent.
摘要:
N-acyl-2,5-dimethylpyrroles and a process for their preparation. The process involves heating a mixture of acetonylacetone and an amide. The ensuing reaction is a condensation reaction with water being split out.
摘要:
Polyphenylene ether resins impact modified with a rubbery impact modifier such as an ABA block copolymer or a polyolefin is made more processable by further compounding with a moderate amount of an aromatic polycarbonate. The compositions exhibit markedly high impact strength and high heat distortion temperature characteristics.
摘要:
Organic zerovalent nickel complexes wherein the organic portion is derived from an ester of pentaerythritol phosphite. The complexes are believed to have a tetrahedral structure; one nickel atom is complexed with four molecules of the pentaerythritol phosphite ester. The nickel complexes are useful as polymer additives, being effective to impart improved resistance to deterioration of olefin polymers upon exposure to ultraviolet light.
摘要:
ASA graft copolymers prepared by an emulsion/suspension process are good flow and impact modifiers for PVC. Blends with PVC exhibit excellent physical properties and considerably better melt flow than PVC blends with conventional impact modifiers.