Resin composition and gas-barrier film using same
AssigneeMitsubishi Chemical Corporation
InventorsMakoto Hatanaka, Satoshi Ikubo
Life of this patent
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Abstract
[Problem] Provided is a resin composition capable of producing a film having an excellent gas-barrier property and a small variation in thickness. [Solution] The resin composition comprises (A) an EVOH-based resin in an amount of at least 40% by weight but 99% by weight or less, (B) a PVA-based resin (B), and (C) an acid-modified polyolefin. The resin composition contains at most 1% of volatile content. The component (B) is preferably a PVA-based resin having a primary hydroxyl group in the side chain.
Claims21
A resin composition comprising
- (A) EVOH-based resin in an amount of at least 40% by weight but 99% by weight or less;
- (B) PVA-based resin;
- and
- (C) Acid-modified polyolefin;
- wherein the ratio [A/B] of the content of the EVOH-based resin (A) to the content of the polyvinyl alcohol-based resin (B) is greater than 1;
- wherein the ratio [C/(A+B)] of the content of the acid-modified polyolefin (C) to the total sum of the contents of the EVOH-based resin (A) and the polyvinyl alcohol-based (B) resin is 0.02 or more and 0.8 or less, and
- wherein the resin composition has greater than 0% and at most 1% of a volatile content.
A molded article formed from a resin composition, the resin composition comprising
- (A) EVOH-based resin in an amount of at least 40% by weight but 99% by weight or less;
- (B) PVA-based resin;
- and
- (C) Acid-modified polyolefin;
- wherein the ratio [A/B] of the content of the EVOH-based resin (A) to the content of the polyvinyl alcohol-based resin (B) is greater than 1;
- wherein the ratio [C/(A+B)] of the content of the acid-modified polyolefin (C) to the total sum of the contents of the EVOH-based resin (A) and the polyvinyl alcohol-based (B) resin is 0.02 or more and 0.8 or less, and wherein the resin composition has greater than 0% and at most 1% of a volatile content.
A multilayer structure containing a layer comprising a resin composition, the resin composition which comprises (A) EVOH-based resin in an amount of at least 40% by weight but 99% by weight or less, (B) PVA-based resin, and (C) Acid-modified polyolefin,
- wherein the ratio [A/B] of the content of the EVOH-based resin (A) to the content of the polyvinyl alcohol-based resin (B) is greater than 1;
- wherein the ratio [C/(A+B)] of the content of the acid-modified polyolefin (C) to the total sum of the contents of the EVOH-based resin (A) and the polyvinyl alcohol-based (B) resin is 0.02 or more and 0.8 or less, and
- wherein the resin composition has at most 1% of a volatile content.
A building sheet material comprising a resin composition which comprises (A) an EVOH-based resin, (B) a PVA-based resin, and (C) an acid-modified polyolefin,
- wherein the ratio [A/B] of the content of the EVOH-based resin (A) to the content of the polyvinyl alcohol-based resin (B) is greater than 1;
- and
- wherein the ratio [C/(A+B)] of the content of the acid-modified polyolefin (C) to the total sum of the contents of the EVOH-based resin (A) and the polyvinyl alcohol-based (B) resin is 0.02 or more and 0.8 or less, and wherein the resin composition has greater than 0% and at most 1% of a volatile content.
Dependencies are inferred from the claim text.