摘要:
A compatibilizer contains a polymer (A) obtained by reacting a modified olefin-based polymer (a-1) with a polymer (a-2) containing a terminal functional group, wherein the modified olefin-based polymer (a-1) is a polymer modified with from 0.01 to 2 mass % of unsaturated carboxylic acid or a derivative thereof, and the polymer (a-2) is a ring opening polymer or condensation polymer containing a terminal functional group, capable of reacting with the modified olefin-based polymer (a-1), at both ends or one end thereof and has a number average molecular weight from 1,500 to 100,000. This provides an excellent compatibilizer. Particularly, upon melt processing a recovery of a multilayer structure including an EVOH layer and a thermoplastic resin layer, a recycling agent is provided that gives sufficient improvement effects to any of the adhesion of a degraded resin to a screw of a molding machine, the generation of die build-up, the generation of fish eyes, and the decrease in transparency.
摘要:
A compatibilizer contains a polymer (A) obtained by reacting a modified olefin-based polymer (a-1) with a polymer (a-2) containing a terminal functional group, wherein the modified olefin-based polymer (a-1) is a polymer modified with from 0.01 to 2 mass % of unsaturated carboxylic acid or a derivative thereof, and the polymer (a-2) is a ring opening polymer or condensation polymer containing a terminal functional group, capable of reacting with the modified olefin-based polymer (a-1), at both ends or one end thereof and has a number average molecular weight from 1,500 to 100,000. This provides an excellent compatibilizer. Particularly, upon melt processing a recovery of a multilayer structure including an EVOH layer and a thermoplastic resin layer, a recycling agent is provided that gives sufficient improvement effects to any of the adhesion of a degraded resin to a screw of a molding machine, the generation of die build-up, the generation of fish eyes, and the decrease in transparency.
摘要:
Laminates in which a layer of a polar resin (C) is laminated with a layer of a polyolefin (D) or a recovered resin (E) via a layer of an adhesive resin composition (A), including an ethylene-vinyl alcohol copolymer, the adhesive resin composition (A) is produced by mixing a resin having an unsaturated carboxylic acid anhydride or derivative thereof (a1) with a ring-opening polymer or condensation polymer (a2) having a hydroxyl group or an amino group at both ends or at one end; or partially grafting the (a2) with the (a1).
摘要:
This invention provides an adhesive resin having sufficient adhesion with a polar resin in any applications at normal temperature and applications for boiling and retort processing, a resin composition comprising the adhesive resin, and further a laminate with polyolefin/polar resin including the resin composition as an intermediate layer. An adhesive resin composition (A) for a polar resin is produced by mixing a resin having a carboxylic acid anhydride or derivative thereof component (a1) with a ring-opening polymer or condensation polymer component (a2) having a hydroxyl group or an amino group at both ends or at one end; or graft-reacting the (a2) component with the (a1) component, and wherein an amount of the (a1) component is such that an acid value of the adhesive resin composition (A) is from 0.1 to 50 mg KOH/g with a potassium hydroxide/ethanol solution, and an amount of the (a2) component is such that y/(x+y)*100 is 10 or more, where x is a sum of peak heights of peaks (1713 cm−1, 1780 cm−1) derived from an acid anhydride group and y is a height of a peak (1740 cm−1) derived from an ester group, all peaks determined by infrared ray (IR) absorption spectrum measurement after melt-kneading the adhesive resin composition (A) at 220° C. for 5 minutes and then cooling to room temperature.
摘要:
A multilayer structure having a layer of an adhesive resin composition (A) and a layer of another resin (B), wherein the adhesive resin composition (A) includes a thermoplastic resin (a1) containing functional groups of at least one kind selected from the group consisting of a boronic acid group and boron-containing groups capable of being converted into a boronic acid group in the presence of water, and a polyolefin (a2) which does not contain the functional groups, the blending weight ratio (a1/a2) of the thermoplastic resin (a1) to the polyolefin (a2) is 1/99 to 15/85, and particles of the thermoplastic resin (a1) are dispersed with an average particle diameter of 0.1 to 1.2 μm in a matrix of the polyolefin (a2). Consequently, a multilayer structures having satisfactory interlayer adhesion strength can be provided even if the content of the resin having a special functional group in the adhesive resin composition layer is reduced.
摘要:
A multilayer structure having a layer of a polypropylene (A) and a layer of an ethylene-vinyl alcohol copolymer (B) laminated to each other via a layer of an adhesive resin composition (C), wherein the adhesive resin composition (C) contains a thermoplastic resin (c1), having functional groups of at least one kind selected from the group consisting of a boronic acid group and boron-containing groups capable of being converted into a boronic acid group in the presence of water, and an ethylene-α-olefin copolymer (c2), having a density of 0.925 g/cm3 or less and not having the functional groups. Consequently, a multilayer structure can be provided that has a layer of a polypropylene and a layer of an EVOH and has good interlayer adhesion strength.
摘要翻译:一种具有聚丙烯层(A)和乙烯 - 乙烯醇共聚物(B)层的多层结构,其通过粘合树脂组合物(C)层彼此层合,其中粘合剂树脂组合物(C)含有 具有选自硼酸基和能够在水存在下转化成硼酸基的含硼基团中的至少一种的官能团的热塑性树脂(c1)和乙烯-α α-烯烃共聚物(c2),其密度为0.925g / cm 3以下,不具有官能团。 因此,可以提供具有聚丙烯层和EVOH层并具有良好的层间粘合强度的多层结构。
摘要:
An object of the present invention is to provide a resin composition suitable for adhering a layer of a base material, such as polyolefins, and a layer of a barrier resin, such as ethylene-vinyl alcohol copolymers. The object is achieved by a resin composition (A) including: a thermoplastic resin (a1) having functional groups of at least one kind selected from the group consisting of a boronic acid group and boron-containing groups capable of being converted into a boronic acid group in the presence of water, a polyolefin (a2) not having the functional groups, and a thermoplastic elastomer (a3) not having the functional groups, wherein the thermoplastic resin (a1) is contained 1 to 20 parts by mass and the thermoplastic elastomer (a3) is contained 3 to 50 parts by mass in terms of 100 parts by mass of the polyolefin (a2).
摘要:
A multilayer structure having a layer of an adhesive resin composition (A) and a layer of another resin (B), wherein the adhesive resin composition (A) includes a thermoplastic resin (a1) containing functional groups of at least one kind selected from the group consisting of a boronic acid group and boron-containing groups capable of being converted into a boronic acid group in the presence of water, and a polyolefin (a2) which does not contain the functional groups, the blending weight ratio (a1/a2) of the thermoplastic resin (a1) to the polyolefin (a2) is 1/99 to 15/85, and particles of the thermoplastic resin (a1) are dispersed with an average particle diameter of 0.1 to 1.2 μm in a matrix of the polyolefin (a2). Consequently, a multilayer structures having satisfactory interlayer adhesion strength can be provided even if the content of the resin having a special functional group in the adhesive resin composition layer is reduced.
摘要:
Provided is a modified ethylene-vinyl alcohol copolymer (C) having an ethylen content of 5 to 55 mol %, which contains a specific structural unit (I) in an amount of 0.3 to 40 mol % and may be obtained by reacting an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) having a molecular weight of not more than 500. This can be produced by a method for producing the modified ethylene-vinyl alcohol copolymer (C) which comprises melting and kneading an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) in an extruder. The modified ethylene-vinyl alcohol copolymer (C) is superior to a unmodified ethylene-vinyl alcohol copolymer (A) in transparency, stretchability, flexibility and flexing resistance due to the specific structural unit (I) incorporated therein, and thus, can be used as a barrier material in various applications requiring the above performance capabilities.
摘要:
Provided is a resin composition comprising 1-99% by weight of a modified ethylene-vinyl alcohol copolymer (C) having an ethylene content of 5-55 mol %, which contains a specific structural unit (I) in an amount of 0.3-40 mol % and can be obtained by reacting an ethylene-vinyl alcohol copolymer (A) with a monofunctional epoxy compound (B) having a molecular weight of not more than 500, and 1-99% by weight of a thermoplastic resin (T1) other than (C). Moreover, a multilayer structure in which the resin composition and a thermoplastic resin (T2) are laminated is also provided. Thus, a resin composition superior in barrier properties, transparency, stretchability, flexibility, flexing resistance and interlayer adhesiveness and various kinds of molded articles made thereof are provided.