Polymethallyl alcohol resin composition and molding containing same

Patent metadata

Field	Value
Publication number	US-11865815-B2
Application number	US-201515535279-A
Country	US
Kind code	B2
Filing date	Dec 24, 2015
Priority date	Dec 24, 2014
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

Provided is a resin composition containing polymethallyl alcohol (A) having a repeating structural unit represented by the following formula (1) in an amount of greater than or equal to 30 mol %, and a component (B) that is at least one of an acid component having a pKa of 3.5 to 7.5 and an anion of the acid component, the pKa being a logarithmic value of a reciprocal of an acid dissociation constant at 25° C., a content of the component (B) being greater than or equal to 0.01 μmol per 1 g of the polymethallyl alcohol (A); a method of producing the resin composition; and a molding containing the resin composition.

First claim

The invention claimed is:

1. A resin composition consisting of:
polymethallyl alcohol (A) consisting of a repeating structural unit represented by formula (1) in an amount of greater than or equal to 70 mol % to 100 mol %, and optionally another structural unit derived from (meth)acrylic acid ester, allyl alcohol, or styrene:

and
a component (B) that is at least one selected from the group consisting of acetic acid, butyric acid, propionic acid, citric acid, tartaric acid, lactic acid, phosphonic acid, and phosphoric acid,
wherein a content of the component (B) is greater than or equal to 0.01 μmol and lower than or equal to 34.5 μmol per 1 g of the polymethallyl alcohol (A),
the resin composition optionally includes a component (C) that is an alkali metal ion and/or an alkaline earth metal ion, wherein if the resin composition includes the component (C), then a content of the component (C) is 0.05 to 45 μmol per 1 g of the polymethallyl alcohol (A),
the resin composition optionally includes at least one additive (D) selected from the group consisting of an ultraviolet absorber, a plasticizer, an antistatic agent, a non-metal-containing thermal stabilizer, a lubricant, a coloring agent, and a solvent, and
wherein a ratio MFR 15 /MFR 3 is from 0.3 to less than 1.7, wherein MFR 3 is a weight of the resin composition discharged for 1 minute when the resin composition is held in a melt indexer at a temperature of 210° C. and a load of 2160 g for 3 minutes, and MFR 15 is a weight of the resin composition discharged for 1 minute when the resin composition is held in the melt indexer at a temperature of 210° C. and a load of 2160 g for 15 minutes.

2. The resin composition according to claim 1 , including the component (C).

3. The resin composition according to claim 1 , wherein if the resin composition includes a transition metal ion, then a content of the transition metal ion is lower than or equal to 22 μmol per 1 g of the polymethallyl alcohol (A).

4. The resin composition according to claim 1 , wherein the resin composition does not include a transition metal ion in an amount of more than 2.5 μmol per 1 g of the polymethallyl alcohol (A).

5. The resin composition according to claim 1 , wherein the resin composition does not include a transition metal ion.

6. The resin composition according to claim 1 , wherein the resin composition does not include a polymer compound other than the polymethallyl alcohol (A).

7. A molding comprising the resin composition according to claim 1 .

8. The molding according to claim 7 , comprising at least one layer that contains the resin composition.

9. The molding according to claim 7 , having a multilayer structure comprising at least one layer that contains the resin composition and at least one other layer.

10. The molding according to claim 9 , wherein the multilayer structure comprises the at least one layer that contains the resin composition and a thermoplastic resin layer laminated on one surface or both surfaces of the layer that contains the resin composition.

11. The molding according to claim 10 , wherein the at least one layer that contains the resin composition has a thickness of 0.1 to 1000 μm.

12. The molding according to claim 7 , which is a packing material.

13. A method of producing the resin composition according to claim 1 , the method comprising:
producing the polymethallyl alcohol (A); and
mixing the polymethallyl alcohol (A) with the component (B).

14. The method according to claim 13 , wherein the mixing includes contacting the polymethallyl alcohol (A) with a liquid containing the component (B).

15. The method according to claim 13 , wherein the mixing includes adding a liquid containing the component (B) to the polymethallyl alcohol (A) melted.

16. The method according to claim 14 , wherein the liquid containing the component (B) further contains the component (C).

17. The method according to claim 13 , wherein the mixing includes dry-blending the component (B) with the polymethallyl alcohol (A).

18. The method according to claim 15 , wherein the liquid containing the component (B) further contains the component (C).

Assignees

• Kuraray Co

Inventors

• Nonaka Yasuhiro
• Inubushi Yasutaka

Classifications

• B32B27/00 Primary

  Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)} · CPC title

• C08F8/04

  Reduction, e.g. hydrogenation · CPC title

• C08K3/16 Primary

  Halogen-containing compounds · CPC title

• C08K5/09

  Carboxylic acids; Metal salts thereof; Anhydrides thereof · CPC title

• C08K5/092

  Polycarboxylic acids · CPC title