摘要:
The present disclosure is directed to acetylated castor components and compositions including the same. The acetylated castor component may be an acetylated castor oil and/or an acetylated castor wax. The acetylated castor component may be blended with an epoxidized fatty acid ester. The present acetylated castor components and blends find advantageous application as a plasticizer.
摘要:
The present disclosure is direct to acetylated glycerin ester and compositions including the same. The acetylated glycerin ester may be blended with other plasticizers, including an epoxidized fatty acid ester. The present acetylated glycerin ester and blends find advantageous application as a plasticizer.
摘要:
The present disclosure is directed to a single phase acetylated castor component (SP-ACC). An acetylated castor component is purified to produce the SP-ACC which contains a reduced amount of, or no, insoluble component(s) therein. The SP-ACC enhances the performance and properties of plasticizers of which it is a component.
摘要:
Thermally activated, free-radical initiator-containing polymer compositions comprise a (i) free radical initiator, (ii) free radical crosslinkable polymer, (iii) scorch inhibiting amount and/or a cure-boosting amount of at least one of isocyanate, diiso-cyanate, e.g., MDI, or hydroxyalkyl(meth)acrylate compound, e.g., hydroxyethyl(meth)acrylate, and, optionally, (iv) other scorch retardants and/or cure boosters, e.g., a TEMPO compound, a hindered phenol, alpha-methyl styrene dimer, etc. The free radical initiator can be any thermally activated compound that is relatively unstable and easily breaks into at least two radicals, e.g., a peroxide or azo initiator. The crosslinkable polymer is a thermoplastic and/or elastomeric polymer that can be crosslinked (cured) through the action of a crosslinking agent, e.g., LDPE. The isocyanate, diisocyanate and (meth)acrylate scorch inhibitors and/or cure boosters can be used alone, or in combination with one another, or, optionally, in combination with a TEMPO compound, e.g., 4-hydroxy-TEMPO.
摘要:
Silane crosslinkable polymer compositions comprise (i) at least one silane crosslinkable polymer, e.g., ethylene-silane copolymer, and (ii) a catalytic amount of at least one polysubstituted aromatic sulfonic acid (PASA). The PASA catalysts are of the formula: HSO3Ar—R1(Rx)m Where: m is 0 to 3; R1 is (CH2)nCH3, and n is 0 to 3 or greater than 20; Each Rx is the same or different than R1; and Ar is an aromatic moiety.
摘要翻译:硅烷交联聚合物组合物包含(i)至少一种硅烷可交联聚合物,例如乙烯 - 硅烷共聚物,和(ii)催化量的至少一种多取代芳族磺酸(PASA)。 PASA催化剂具有下式:HSO 3 Ar-R 1(R x x)m其中:m 是0到3; R 1是(CH 2 CH 2)n CH 3 CH 3,n是0至3或大于20; 每个R x X相同或不同于R 1; 并且Ar是芳族部分。
摘要:
A blend which comprises; A) a heterogeneous or homogenous linear ethylene homopolymer or interpolymer; B) a branched homopolymer or interpolymer; wherein said blend has; 1) a melt index, I2, of about 0.05 to about 20 g/10 min; 2) a flexural modulus of ≧100,000 psi or ≦30,000 psi; 3) a melt strength of ≧2 cN; 4) a melt extensibility of ≧25 mm/sec; and 5) wherein said melt strength of said blend meets the following relationship; Melt strength≧FMS*[(f*A)+((1−f)*B)]; where: A=3.3814*(I2)−0.6476 and B=16.882*(I2)−0.6564; where I2 is the measured melt index of the blend; f is the weight fraction of the linear polyethylene in the blend and FMS is ≧1.1. Also included in the present invention are foams, films, fibers, blow molded articles, wire and cable articles and extrusion coatings comprising said blend.
摘要:
This invention describes grafted blend compositions, processes for their preparation and fabricated articles, especially foams therefrom. The blends exhibit enhanced melt strength, melt elongation greater than or equal to about 20 mm/s, increased upper service temperature, increased modulus, and increased hardness. The grafted blend compositions have little or no high shear viscosity increase over a corresponding polymer of the same chemical composition absent the coupling agent.
摘要:
An acoustical insulation foam having, either with or without elastification, an Asker C hardness of less than about 65, a density of about 5 to about 150 kg/m3, a cell size of about 0.05 to about 15 mm, an open cell content of 0 to about 100 volume percent, a thickness of about 1 to about 200 mm, and a width of about 100 to about 3000 mm; comprising; (A) one or more alkenyl aromatic polymers, (B) one or more substantially random interpolymers and (C) optionally, one or more nucleating agents and (D) optionally, one or more other additives; and (E) one or more blowing agents.
摘要翻译:一种绝缘泡沫,具有或不具有弹性,具有小于约65的Asker C硬度,约5至约150kg / m 3的密度,约0.05至约15mm的孔尺寸,开孔含量 0至约100体积%,厚度为约1至约200mm,宽度为约100至约3000mm; (A)一种或多种链烯基芳族聚合物,(B)一种或多种基本上无规共聚体和(C)任选的一种或多种成核剂和(D)任选的一种或多种其它添加剂; 和(E)一种或多种发泡剂。
摘要:
Thermoplastic compositions have been discovered which are suitable for rotational molding. The compositions have improved processability and/or improved physical and mechanical properties. The compositions advantageously often exhibit one or more of the following: reduced low shear viscosity, reduced melt elasticity at low shear rate, reduced cycle times, improved sintering and a wide range of processing temperatures, improved low temperature and/or room temperature impact, good environmental stress crack resistance, acceptable heat distortion temperature, and acceptable flexural and secant modulus.
摘要:
Disclosed is an extruded, dimensionally stable, closed cell alkenyl aromatic polymer foam. The foam comprises an alkenyl aromatic polymer material greater than 50 percent by weight of alkenyl aromatic monomeric units. The foam has a density of about 16 to about 64 kilograms per cubic meter. The foam has a thickness in cross section of 15 millimeters or more. The foam has a blowing agent composition comprising a primary blowing agent of about 70 to about 95 weight percent 1,1,2,2-tetrafluoroethane and a secondary blowing agent comprising about 30 to about 5 weight percent based upon the total moles of the blowing agent composition. The secondary blowing agent being selected from the group consisting essentially of 1,1,1,2-tetrafluoroethane, carbon dioxide, nitrogen, argon, and water. Further disclosed is a process for making the foam.