Abstract: Provided herein are systems and methods for resilience testing. A system includes at least one hardware processor coupled to a memory and configured to decode a workflow to obtain a workload specification and a failure experiment specification. A first set of containers is configured to execute one or more workloads on a testing node. The one or more workloads are defined by the workload specification. A second set of containers is configured to execute one or more failure experiments on the testing node. The one or more failure experiments are based on the failure experiment specification. Execution of the one or more failure experiments triggers an error condition on the testing node. A notification is generated based on at least one metric associated with execution of the one or more workloads and the one or more failure experiments.

Abstract: Provided herein are systems and methods for resilience testing. A system includes at least one hardware processor coupled to a memory and configured to decode a workflow to obtain a workload specification and a network experiment specification. A first set of containers is configured to execute one or more workloads on a testing node. The one or more workloads are defined by the workload specification. A second set of containers is configured to execute one or more network experiments on the testing node. The one or more network experiments are based on the network experiment specification. Execution of the one or more network experiments triggers an error condition on the testing node. A notification is generated based on at least one metric associated with execution of the one or more workloads and the one or more network experiments.

Abstract: Polyolefin hollow articles prepared via a rotomolding process are provided flame retardancy by incorporating therein a phosphonate ester, an N-alkoxy hindered amine and melamine cyanurate.

Abstract: Polycarbonate compositions comprising one or more additives selected from the group consisting of benzofuranone stabilizers of formula I, wherein R1, R2, R3, R4 and R5 are each independently hydrogen, halogen, hydroxy, C1-C25alkyl, C2-C25alkenyl, C2-C25alkynyl, C7-C9phenylalkyl, phenyl, C5-C8cycloalkyl, C1-C18alkoxy, C1-C8alkylamine, di(C1-C8alkyl)amino, C1-C25alkanoyloxy, C1-C25alkanoylamino, C3-C25alkenoyloxy, C3-C25alkanoyloxy interrupted by one to three —O—, —S—, —NH— or —N(C1-C8alkyl)-, wherein C1-C25alkyl, C2-C25alkenyl, C2-C25alkynyl, C7-C9phenylalkyl, phenyl, C5-C8cycloalkyl, C1-C18alkoxy, C1-C8alkylamine, di(C1-C8alkyl)amino, C1-C25alkanoyloxy, C1-C25alkanoylamino, C3-C25alkenoyloxy and interrupted C3-C25alkenoyloxy are unsubstituted or substituted by one to three groups selected from halogen, hydroxy, thiol, amino, C1-C4alkylamino, di(C1-C4alkyl)amino and C1-C4alkyl.

Abstract: A polyolefin composition includes a polyolefin substrate having incorporated therein a nucleating agent and a filler, wherein the composition exhibits an impact strength of >35 in-lb measured according to ASTM D4226, and a coefficient of linear thermal expansion of <4.5×10E-05 in/in/ft measured according to ASTM D696. The polyolefin composition may further include one or more of an ultraviolet light absorber, a hindered amine light stabilizer, an antioxidant, a colorant, a flame retardant, and an antimicrobial compound. The polyolefin compositions may be useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing.

Abstract: Polyolefin compositions useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing. The compositions comprise a polyolefin substrate which has incorporated therein one or more additives selected from the group consisting of a) one or more ultraviolet light absorbers, b) one or more hindered amine light stabilizers and c) one or more antioxidants. Advantageously, the polyolefin substrate also has incorporated therein d) one or more colorants, e) one or more fillers, f) one or more flame retardants and optionally g) one or more antimicrobial compounds. The compositions exhibit certain performance levels according to standard tests, for example impact strength of >35 in-lb per ASTM D4226, coefficient of linear thermal expansion of <4.

Abstract: A flame-retardant article including a polyolefin substrate having incorporated additives. The additives include: a specific phosphonate ester, a synergist including an N-alkoxy hindered amine, and a melamine cyanurate. Flame retardant compositions, and use of the compositions for improving the flame retardancy of polyolefins, also are disclosed.

Abstract: Disclosed in certain embodiments are non-halogenated flame-retardant polyolefin articles. The articles include polyolefin substrates having additives contained therein.

Abstract: A polyolefin composition includes a polyolefin substrate having incorporated therein a nucleating agent and a filler, wherein the composition exhibits an impact strength of >35 in-lb measured according to ASTM D4226, and a coefficient of linear thermal expansion of <4.5×10E-05 in/in/ft measured according to ASTM D696. The polyolefin composition may further include one or more of an ultraviolet light absorber, a hindered amine light stabilizer, an antioxidant, a colorant, a flame retardant, and an antimicrobial compound. The polyolefin compositions may be useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing.

Abstract: Polyolefin compositions useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing. The compositions comprise a polyolefin substrate which has incorporated therein one or more additives selected from the group consisting of a) one or more ultraviolet light absorbers, b) one or more hindered amine light stabilizers and c) one or more antioxidants. Advantageously, the polyolefin substrate also has incorporated therein d) one or more colorants, e) one or more fillers, f) one or more flame retardants and optionally g) one or more antimicrobial compounds. The compositions exhibit certain performance levels according to standard tests, for example impact strength of >35 in-lb per ASTM D4226, coefficient of linear thermal expansion of <4.

Abstract: This disclosure describes, generally, methods and systems for managing connections within a connection pool. The method includes initializing a plurality of connections. The plurality of connections are configured to pierce a firewall. The method further includes placing the plurality of connections in a connection pool, and storing creation times for each of the plurality of connections. The method then determines the firewall's connection teardown time period and, based at least in part on the firewall's connection teardown time period, setting the connection pool's connection teardown time period to be at least less than the firewall's connection teardown time period.

Abstract: This disclosure describes, generally, methods and systems for managing connections within a connection pool. The method includes initializing a plurality of connections. The plurality of connections are configured to pierce a firewall. The method further includes placing the plurality of connections in a connection pool, and storing creation times for each of the plurality of connections. The method then determines the firewall's connection teardown time period and, based at least in part on the firewall's connection teardown time period, setting the connection pool's connection teardown time period to be at least less than the firewall's connection teardown time period.

Abstract: The present invention discloses a process for the preparation of a stabilized polyester that is low in the generation of aldehydes which comprises reacting one or more diacids with one or more diols in an esterification process, and/or one or more diesters with one or more diols in a transesterification process in the presence of an effective amount of a stabilizer selected from the group consisting of (a) a polyhydric alcohol which is for example poly(ethylene-co-vinyl alcohol), poly(styrene-co-allyl alcohol), maltitol, isomalt, sorbitol, xylitol, sucrose, mucic acid dibutylester, mucic acid di(phenyl-1-ethyl)ester, pentaerythritol or dipentaerythritol; (b) a compound of the formula II which is for example di-iso-octyl-phosphinic acid; (c) a sterically hindered amine which is for example Tinuvin 123 or Tinuvin 622; (d) a polyacrylamide, an anionic acrylic polymer or a cationic acrylamide copolymer; or (e) a hydroxylamine and/or a nitrone.

Abstract: The contents of clear or lightly colored plastic containers or films are protected from ultraviolet radiation by the incorporation of certain UV absorbers of the class of durable benzotriazoles and tris-aryl-s-triazines in the container or film. Contents to be protected include foodstuffs, beverages, pharmaceuticals, cosmetics, personal care products, shampoos and the like.

Abstract: Compounds of the general formula I? in which R1 is H, C1–C12alkyl; C5–C12cycloalkyl; C2–C18alkyl which is interrupted by one or more O; SR4; OR5; or is a group of formula II or III R2, R21 and R3 independently of one another, are H or —Y—T as defined in claim 1, where T is a reactive group selected from OH, acryl- and methacryloxy and arylcarbonate groups, and further symbols are as defined in claim 1, are effective as crosslinking agents for polymeric networks, especially as in flexographic printing plates, coatings, and plastic containers or films. Further provided is a method of protecting the content of a clear or lightly colored plastic container or film against the deleterious effects of ultraviolet radiation, which method comprises permanently and covalently bonding one or more UV absorbing moieties of a durable s-triazine UV absorber via condensation to a suitable polymer component.

Abstract: The present invention discloses a process for the preparation of a stabilized polyester that is low in the generation of aldehydes which comprises reacting one or more diacids with one or more diols in an esterification process, and/or one or more diesters with one or more diols in a transesterification process in the presence of an effective amount of a stabilizer selected from the group consisting of (a) a polyhydric alcohol which is for example poly(ethylene-co-vinyl alcohol), poly(styrene-co-allyl alcohol), maltitol, isomalt, sorbitol, xylitol, sucrose, mucic acid dibutylester, mucic acid di(phenyl-1-ethyl)ester, pentaerythritol or dipentaerythritol; (b) a compound of the formula II, which is for example di-iso-octyl-phosphinic acid; (c) a sterically hindered amine which is for example Tinuvin 123 or Tinuvin 622; (d) a polyacrylamide or a cationic acrylamide copolymer; or (e) a hydroxyamine and/or a nitrone.

Abstract: Benzotriazole UV absorbers substituted with a ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega-OH or an omega-OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.

Abstract: A mixture of a polyester, such as poly(ethylene terephthalate) PET, and a suitable stabilizer selected from the group consisting of polyhydric alcohol-containing polymers and copolymers derived from 2-propenoic acid ester monomers, when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when similarly treated. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, beverages and most especially water.

Abstract: A compound of the formula (I) wherein n is preferably 3; G1, G2, G3 and G4 are independently of one another e.g. C1–C4alkyl; A1 is e.g. hydrogen or methyl; A2 is e.g. methylene; A3? and A3? are e.g. C1–C4alkyl; A4 is e.g. C1–C8alkyl; Y is e.g. a group of the formula (IV) ?wherein R1 is e.g. hydrogen or methyl, R2 is e.g. methylene, R3? and R3? are e.g. C1–C4alkyl and R4 is e.g. hydrogen or C1–C8alkyl; and Z is e.g. a group of the formula (VI) ?with A10? and A10? being independently of one another e.g. hydrogen or C1–C4alkyl and A11? and A11? being independently of one another e.g. C2–C6alkylene, is useful for stabilizing an organic material against degradation induced by light, heat or oxidation.

Abstract: A mixture of a polyester, such as poly(ethylene terephthalate) PET, and a second polymer which is polyacrylamide, polymethacrylamide or copolymer of acrylamide or methacrylamide when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when similarly treated. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, beverages and most especially water.