摘要:
A polyamide resin composition, having an excellent extensibility and flexing fatigue, composed of a polyamide resin (A), as a matrix, and a modifying polymer (C), dispersed therein, having a functional group (B) reactive with the polyamide resin (A), wherein a tensile stress at break of the modifying polymer (C) is 30 to 70% of the tensile stress at break of the polyamide resin (A), and a tensile elongation at break of the modifying polymer (C) is 100 to 500% of the tensile elongation at break of the polyamide resin (A) as well as a pneumatic tire and hose using the same.
摘要:
A laminate (C) of a thermoplastic polymer composition comprising: a thermoplastic resin composition (A) having an permeation coefficient of 10×10−12 cc·cm/cm2·sec·cmHg or less, laminated with a thermoplastic polymer composition (B) having a melt viscosity of 500-2000 Pa·s and a Young's modulus at a room temperature of 1-400 MPa, wherein the thickness of a layer of the thermoplastic resin composition (A) is 0.05-10 μm and the air permeation coefficient of the laminate (C) of 20×10−12 cc·cm/cm2·sec·cmHg or less, and a pneumatic tire using the above laminate (C) as an inner liner.
摘要:
A thermoplastic elastomer composition possessing superior air impermeability, excellent durability and flexibility. In particular, the composition includes (A) at least one halogenated isobutylene-containing elastomer; and (B) at least one nylon resin having a melting point of about 170° C. to about 260° C.; and (C) a low molecular weight polymeric nylon plasticizer; wherein: (1) the at least one elastomer is present as a dispersed phase of small vulcanized particles in a continuous nylon phase; and (2) the elastomer particles are formed by dynamic vulcanization. Use of a low molecular weight nylon plasticizer provides for improved mixing and rubber dispersion while retaining the high levels of impermeability achievable by the use of nylon resin and halogenated isobutylene-containing elastomer in a dynamically vulcanized composition. Such compositions are particularly useful in applications such as tire innerliners and barrier films or layers as well as hoses.
摘要:
An oriented thermoplastic elastomer film having reduced permeability and improved fatigue resistance comprising a dynamically vulcanized polymer blend of (A) a halogenated isobutylene elastomer and (B) polyamide, the film is produced by casting or blowing the above polymer blend under the condition such that a shear rate at a die lip for casting or blowing is regulated to control the molecular arrangement in the film, whereby the planar birefringence (PBR) of the resultant film becomes greater or equal to 0.002 and a production process of the same.
摘要:
A vulcanizable layered composition comprising at least two layers and at least one tie layer, wherein the first layer of the two layers is a fluid permeation prevention layer preferably comprising: (A) at least one thermoplastic engineering component and (B) at least one elastomer component; the second layer of the two layers comprises at least one high diene rubber and the tie layer comprises a mixture of: (1) at least one halogenated isobutylene containing elastomer; (2) up to 50 weight % of at least one high diene elastomer; (3) at least one filler; (4) up to 30 weight % of at least one processing oil; (5) at least one tackifier; and (6) a curing system for the elastomers.
摘要:
This disclosure relates to a vulcanizable layered composition comprising at least two layers and at least one tie layer, wherein the first layer of the two layers comprises an fluid permeation prevention layer, the second layer of the two layers comprises at least one high diene rubber, and the tie layer comprises a mixture of: (1) about 50 to about 100 weight % of at least one halogenated isobutylene containing elastomer; (2) about 0 to about 50 weight % of at least one high diene elastomer; (3) about 20 to about 50 weight % of at least one filler; (4) about 0 to about 30 weight % of at least one processing oil; (5) about 1 to about 20 parts per hundred (phr) of at least one tackifier; and (6) at least about 0.2 to about 15 parts per hundred of rubber (phr) of a curing system for the elastomers; wherein THE fluid permeation prevention layer preferably comprises: (A) at least 10% by weight, based on the total weight of the polymer composition, of at least one thermoplastic engineering resin component, preferably one or more nylon resins, and (B) at least 10% by weight, based on the total weight of the polymer composition, of at least one elastomer component, preferably a brominated isobutylene p-methylstyrene copolymer, and where the total amount of the component (A) and the component (B) is not less than 30% by weight based on the total weight of the polymer composition, wherein the elastomer component (B) is dispersed in a vulcanized or partially vulcanized state, as a discontinuous phase, in a matrix of the thermoplastic resin component (A) in the polymer composition.
摘要:
A thermoplastic elastomer composition comprising a dynamically vulcanized blend of (A) a partially cured halogenated isobutylene elastomer and (B) a polyamide, wherein a tensile modulus at 100% elongation of the halogenated isobutylene elastomer dispersed in the polyamide matrix is less than 0.60 MPa.
摘要:
A thermoplastic elastomer composition having improved mechanical properties and fatigue resistance comprising (A) a halogenated isobutylene elastomer, (B) polyamide and (C) an amine component selected from tertiary amines and secondary diamines, wherein the elastomers are dispersed as a domain in a continuous phase of the polyamide.
摘要:
This disclosure relates to a vulcanizable layered composition comprising at least two layers and at least one tie layer. The first of the two layers comprises a fluid permeation prevention layer and the second comprises at least one high diene rubber. The tie layer comprises, a mixture, in parts by weight relative to 100 weight parts of rubber, of suitable amounts of: (1) epoxidized natural rubber; (2) at least one high diene elastomer; (3) at least one filler; (4) least one tackifier; and (5) a rubber curing system. The fluid permeation prevention layer preferably comprises suitable amounts of: (A) at least one thermoplastic engineering resin component, preferably one or more nylon resins; and (B) at least one elastomer component, preferably a brominated isobutylene p-methylstyrene copolymer/and where the total amount of (A) and (B) is not less than 30% by weight, and wherein (B) is dispersed in a vulcanized or partially vulcanized state, as a discontinuous phase, in a matrix of component (A).