摘要:
The invention relates to melamine group containing compounds which have been found to be effective ultraviolet stabilizers. The invention also relates to ultraviolet degradable organic compositions containing an amount of a melamine group containing compounds to prevent such degradation. These stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including, for example, pigments, colorants, fillers, reinforcing agents and the like. These ultraviolet stabilizers may be incorporated into the organic compositions such as polymers by adding to the polymer melt or dissolved in the polymer dope, coated on the exterior of the shaped or molded article, film or extruded fiber.
摘要:
Compositions suitable for molding are produced by examining a (1) polyethylene terephthalate polyester, (2) a low molecular weight polyethylene mold release agent (3) talc as nucleating agent, (4) carbon black, (5) a hindered phenolic antioxidant and (6) other optional ingredients such as reinforcing glass fibers.
摘要:
Disclosed is a shaped, thin-walled, thermoformed, heat-set article, the composition of which comprises:(a) a crystallizable polyester having repeating units from at least 90 mol % terephthalic acid and repeating units from at least 90 mol % 1,4-cyclohexanedimethanol, the total dicarboxylic acid mol % and the total glycol mol % each being 100 mol %, said polyester having an inherent viscosity of about 0.7-1.1, and(b) a heat stabilizing amount of an antioxidant system comprising a hindered phenol, a thio ester or ether and a phosphate salt.
摘要:
The invention relates to melamine group containing compounds which have been found to be effective ultraviolet stabilizers. The invention also relates to ultraviolet degradable organic compositions containing an amount of a melamine group containing compounds to prevent such degradation. These stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including, for example, pigments, colorants, fillers, reinforcing agents and the like. These ultraviolet stabilizers may be incorporated into the organic compositions such as polymers by adding to the polymer melt or dissolved in the polymer dope, coated on the exterior of the shaped or molded article, film or extruded fiber.
摘要:
Disclosed is copolyester material dyed with at least one azo or anthraquinone type dye, said copolyester material having an inherent viscosity of at least 0.4 and containing in copolymerized form from about 0.3 to about 5.0% by weight of one or more of the stabilizing moieties having the general formula ##STR1## where R and R.sub.1 are each a chemical bond or an alkylene group of 1-6 carbons; R.sub.2 is alkyl, cycloalkyl, or aryl; R.sub.3 represents 1-5 groups each independently selected from H, Cl, F, alkyl, cycloalkyl, alkoxy, aryl or aryloxy; wherein all of the above alkyl and alkylene moieties comprising or being part of the R.sub.2 or R.sub.3 groups contain from 1-8 carbons, and wherein all of the above alkyl, alkylene, aryl and cycloalkyl moieties may be substituted with up to three of a variety of substituents such as halogen, alkyl of 1-8 carbons, alkoxy of 1-8 carbons, aryl, cycloalkyl and CN.
摘要翻译:公开了用至少一种偶氮或蒽醌型染料染色的共聚酯材料,所述共聚酯材料的特性粘度至少为0.4,并且以共聚形式包含约0.3至约5.0重量%的一种或多种稳定部分,其具有 通式其中R和R1各自是化学键或1-6个碳的亚烷基; R2是烷基,环烷基或芳基; R 3表示各自独立地选自H,Cl,F,烷基,环烷基,烷氧基,芳基或芳氧基的1-5个基团; 其中包含或作为R2或R3的一部分的所有上述烷基和亚烷基部分含有1-8个碳,并且其中所有上述烷基,亚烷基,芳基和环烷基部分可以被多至三个各种 的取代基如卤素,1-8个碳原子的烷基,1-8个碳原子的烷氧基,芳基,环烷基和CN。
摘要:
Disclosed are films, containers and container liners comprising a copolyester having repeat units from terephthalic acid and 1,4-cyclohexanedimethanol, and a hindered phenolic antioxidant.
摘要:
A dimensionally stable polyester melt blown web composition is disclosed. The polyester melt blown web is obtained by contacting the web with a solvent, and drying the web. The solvents which are used have total solubility parameters (S.sub.o) of 8.5 to 12.0 (cal/cm.sup.3).sup.1/2, solubility parameter component due to hydrogen bonding (S.sub.h) of 0.5 to 5.5 (cal/cm.sup.3).sup.1/2 and solubility parameter component due to polar forces (S.sub.p) of 0.5 to 7.0 (cal/cm.sup.3).sup.1/2). The polyesters used for such melt blown webs include poly(ethylene-terephthalate), poly(cyclohexylene dimethylene terephthalate) and blends and copolymers of these polymers.
摘要翻译:公开了尺寸稳定的聚酯熔喷纤维网组合物。 聚酯熔喷纤维网通过将纤维网与溶剂接触并干燥纤维网获得。 使用的溶剂的总溶解度参数(So)为8.5〜12.0(cal / cm 3)1/2,由于氢键(Sh)为0.5〜5.5(cal / cm 3)1/2的溶解度参数成分和溶解度参数 由于极性力(Sp)为0.5〜7.0(cal / cm 3)1/2)。 用于这种熔喷纤维网的聚酯包括聚(对苯二甲酸乙二醇酯),聚(亚环己基二亚甲基对苯二甲酸酯)和这些聚合物的共混物和共聚物。