Abstract:
A method is provided for cleaning the interior of polymer processing equipment having a resin composition retained therein, wherein a contaminant material is adhered to at least a portion of the interior surface of the polymer processing equipment. The method comprises the steps of: charging the polymer processing equipment having a residual polymer composition retained in the interior thereof with a purging composition comprising 45-94 weight % of starch; 0.05 to 20 weight % of water; and (3) 5 to 45 weight % of polyol plasticizer, wherein the weight percentages of starch, water and polyol plasticizer are based on the total weight of starch, water and polyol plasticizer; operating the polymer processing equipment to i) convey the purging composition through the polymer processing equipment, thereby removing and withdrawing substantially all of the residual polymer composition from the polymer processing equipment and causing a portion of the purging composition to be retained as a residual purging composition within the interior of the polymer processing equipment; and ii) remove at least a portion of the contaminant material that is adhered to an interior surface of the polymer processing equipment; and removing the portion of the purging composition retained as a residual purging composition from within the interior of the polymer processing equipment.
Abstract:
The present invention provides a method for recovering oil from a subterranean reservoir using waterflooding, wherein the flooding fluid used in the waterflooding process comprises water and one or more ionic polyvinyl alcohol copolymers. The use of one or more ionic polyvinyl alcohol copolymers is expected to increase the recovery of oil by improving both the oil/water mobility ratio and the sweep efficiency in reservoirs with a high degree of heterogeneity.
Abstract:
Provided herein are compositions comprising an ionomer and a polyamine or a tertiary polyamide. The polyamine and the tertiary polyamide have a molecular weight of greater than 500 Da and do not contain an ester moiety or a primary amine moiety. The polyamine comprises at least three moieties that are tertiary amines or hindered secondary amines, and the polyamide comprises tertiary amide moieties and no secondary or primary amide moieties. The compositions may optionally include a filler. Further provided are articles such as golf balls and films containing these compositions.
Abstract:
Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile group-containing cure site monomer are cured with certain hydroxylamine derivatives. The hydroxylamine derivative is of formula R1(C(O))nNHOR2 wherein n is 0 or 1; R1 is H, C(O)R3, C(O)R4, C(O)OR3, or C(O)SR3; R2 is H, C(O)R3, or C(O)OR3; R3 is C1-C20 alkyl group, aryl, heterocycle, benzyl, 9-fluorenylmethyl, or CH2R4; and R4 is a fluoroalkyl group, with the proviso that R1 and R2 cannot simultaneously be H.
Abstract:
Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain carbazates. The carbazate is of the general formula R 1 OC(O)NHNHR 2 , wherein R 1 is 9-fluorenylmethyl, benzyl, aryl, or a heterocycle; R 2 is H, alkyl, aryl, heterocycle, CO 2 R 3 or CH 2 R 4 ; R 3 is alkyl, aryl, benzyl or a heterocycle; and R 4 is a fluoroalkyl group.
Abstract translation:包含具有含腈固化部位单体的共聚单元的含氟弹性体的含氟弹性体组合物用某些卡巴肼固化。 肼基甲酸酯具有通式R 1 OC(O)NHNHR 2,其中R 1是9-芴基甲基,苄基,芳基或杂环; R2是H,烷基,芳基,杂环,CO 2 R 3或CH 2 R 4; R3是烷基,芳基,苄基或杂环; R4为氟代烷基。
Abstract:
Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile group-containing cure site monomer are cured with certain hydroxylamine derivatives. The hydroxylamine derivative is of formula R 1 (C(O)) n NHOR 2 wherein n is 0 or 1; R 1 is H, C(O)R 3 , C(O)R 4 , C(O)OR 3 , or C(O)SR 3 ; R 2 is H, C(O)R 3 , or C(O)OR 3 ; R 3 is C 1 -C 20 alkyl group, aryl, heterocycle, benzyl, 9-fluorenylmethyl, or CH 2 R 4 ; and R 4 is a fluoroalkyl group, with the proviso that R 1 and R 2 cannot simultaneously be H.
Abstract:
A method is provided for cleaning the interior of polymer processing equipment having a resin composition retained therein, wherein a contaminant material is adhered to at least a portion of the interior surface of the polymer processing equipment. The method comprises the steps of: charging the polymer processing equipment having a residual polymer composition retained in the interior thereof with a purging composition comprising 45-94 weight % of starch; 0.05 to 20 weight % of water; and (3) 5 to 45 weight % of polyol plasticizer, wherein the weight percentages of starch, water and polyol plasticizer are based on the total weight of starch, water and polyol plasticizer; operating the polymer processing equipment to i) convey the purging composition through the polymer processing equipment, thereby removing and withdrawing substantially all of the residual polymer composition from the polymer processing equipment and causing a portion of the purging composition to be retained as a residual purging composition within the interior of the polymer processing equipment; and ii) remove at least a portion of the contaminant material that is adhered to an interior surface of the polymer processing equipment; and removing the portion of the purging composition retained as a residual purging composition from within the interior of the polymer processing equipment.
Abstract:
An oxidizing agent comprising a pre-measured amount of stabilized potassium hydrogen peroxymonosulfate and a buffer in a sealed water-soluble pouch, said pouch comprising a hydrolyzed copolymer of vinyl acetate and at least one of acrylic acid, metliacrylic acid, maleic acid, itaconic acid, and esters thereof is disclosed.