Resin composition
View Patent ↗The present invention provides a resin composition containing a polyolefin resin (A), a metal soap (B), a saponified product (C), and a hydrotalcite compound and/or a hydrotalcite solid solution (D). The resin composition shows superior long-run formability (surface smoothness, suppression of fish eye, pigment dispersibility), suppressive effect on die build-up and superior transparency and gas barrier property when added to a regrind layer during formation of a laminate having the regrind layer. Therefore, the composition is highly useful as an additive for collected materials (regrind) for forming various laminates.
1. A resin composition comprising a polyolefin resin (A), a metal soap (B) of the following formula (1), which is obtained by a heat reaction by a dry direct method of one or more kinds of aliphatic monocarboxylic acid having 12 to 30 carbon atoms and an oxide or hydroxide of group II metal of the periodic table, a saponified product (C) of an ethylene-vinyl acetate copolymer having an ethylene content of 82-95 mol % and a saponification degree of a vinyl acetate component of not less than 85 mol %, and a hydrotalcite compound and/or a hydrotalcite solid solution (D):
αMO·M(OOCR) 2 (1)
wherein α is a number of 0.1-1.0, M is a divalent metal of group II of the periodic table, and R is a saturated or unsaturated alkyl group having 11 to 29 carbon atoms.
2. The resin composition of claim 1 , wherein the content of the metal soap (B) in the resin composition is 0.005-20 wt %.
3. The resin composition of claim 1 , wherein the content ratio of the polyolefin resin (A) and the saponified product of an ethylene-vinyl acetate copolymer (C), (A/C), is 95/5-30/70 (weight ratio).
4. The resin composition of claim 2 , wherein the content ratio of the polyolefin resin (A) and the saponified product of an ethylene-vinyl acetate copolymer (C), (A/C), is 95/5-30/70 (weight ratio).
5. The resin composition of claim 1 , which is added to a collected material of a laminate comprising a layer containing a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20-65 mol % and a saponification degree of a vinyl acetate component of not less than 90 mol %.
6. The resin composition of claim 2 , which is added to a collected material of a laminate comprising a layer containing a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20-65 mol % and a saponification degree of a vinyl acetate component of not less than 90 mol %.
7. The resin composition of claim 3 , which is added to a collected material of a laminate comprising a layer containing a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20-65 mol % and a saponification degree of a vinyl acetate component of not less than 90 mol %.
8. The resin composition of claim 4 , which is added to a collected material of a laminate comprising a layer containing a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20-65 mol % and a saponification degree of a vinyl acetate component of not less than 90 mol %.
9. A composition comprising a ground laminate comprising a thermoplastic resin layer and a layer of a saponified product of an ethylene-vinyl acetate copolymer and the resin composition of claim 1 .
10. A composition comprising a ground laminate comprising a thermoplastic resin layer and a layer of a saponified product of an ethylene-vinyl acetate copolymer and the resin composition of claim 2 .
11. A composition comprising a ground laminate comprising a thermoplastic resin layer and a layer of a saponified product of an ethylene-vinyl acetate copolymer and the resin composition of claim 3 .
12. A composition comprising a ground laminate comprising a thermoplastic resin layer and a layer of a saponified product of an ethylene-vinyl acetate copolymer and the resin composition of claim 4 .
13. The resin composition of claim 1 , wherein the saponified product (C) of an ethylene-vinyl acetate copolymer has an ethylene content of 82-92 mol % and a saponification degree of a vinyl acetate component of not less than 85 mol %.