Graft copolymer, resin composition, film, laminate and tire
A graft copolymer, polyvinyl alcohol resin technology, used in special tires, tire parts, coatings, etc., can solve the problems of decreased strength and adhesion, poor fatigue resistance, insufficient and other problems, achieve adhesion and Effects of high fatigue resistance and excellent gas barrier properties
Active Publication Date: 2020-05-12
BRIDGESTONE CORP
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Problems solved by technology
[0011] However, using the technology of PTL1, the interface strength between the layer made of the barrier material and the elastomer layer is insufficient due to the absence of a chemical bond between the two layers, thus requiring improvement regarding the reduction in strength and adhesiveness by repeated bending (i.e. poor fatigue resistance)
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Embodiment 1 to 14
[0122] Dissolve the barrier resins shown in Table 1 in a 3:1 mixed solvent (weight ratio) of DMSO (dimethyl sulfoxide) and THF, then add and dissolve the Synthetic rubber shown. Then, add 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride and 4,4'-dimethylaminopyridine (respectively 20wt.% and 0.1wt% of synthetic rubber .% amount), and the mixture thus obtained was stirred at room temperature for 1 day.
[0123] Then, the graft copolymer of each example was obtained by reprecipitating the reaction solution using methanol and filtering.
[0124] Table 1 shows the conditions of the barrier resin and synthetic rubber used.
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Abstract
An object of the present invention is to provide a graft copolymer having gas barrier properties and excellent flexibility, adhesiveness and fatigue resistance. The present invention is characterized in that one or more compounds selected from the group consisting of polyacrylic acid, polyamide-based resins, cellulose-based resins, polyvinyl alcohol resins, ethylene-polyvinyl alcohol resins, acrylic ester-based resins, and polyurethane-based resins The main chain of the resin is introduced into the synthetic rubber via the terminal portion of the synthetic rubber as a graft chain.
Description
technical field [0001] The present disclosure relates to a graft copolymer, a resin composition, a film, a laminate, and a tire. Background technique [0002] Barrier materials having hydrogen bonding sites such as polyamide resins, cellulose resins, polyvinyl alcohol, and ethylene-polyvinyl alcohol exhibit excellent weather resistance reflecting the strength of intermolecular interactions between the main chains and gas barrier properties. [0003] However, the foregoing barrier resins have problems in flexibility and fatigue resistance in view of their practical use in various industrial products. Further, it is often difficult to ensure its adhesion to other materials, for example, when it is used in applications represented by tires in which a large amount of repeated deformation on the rubber substrate is caused, in the strength against fatigue of the barrier material and to the rubber There is a problem with the adhesive force. Therefore, attempts have been made to ...
Claims
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IPC IPC(8): C08G81/00B32B25/08B60C1/00B60C5/14C08L87/00
CPCB32B25/08B60C1/00B60C5/14C08G81/00C08L87/00B60C1/0025B32B25/14B32B25/20B60C1/0008C08G81/021C09D187/005
Inventor 西井雅之杉山贤次
Owner BRIDGESTONE CORP