Process for preparing laminated resin product

• US 4,058,647 A
• Filed: 02/25/1976
• Issued: 11/15/1977
• Est. Priority Date: 02/27/1975
• Status: Expired due to Term

• Current Assignee: Mitsubishi Petrochemical Co., Ltd. (Mitsubishi Chemical Group Corp.)
• Original Assignee: Mitsubishi Petrochemical Co., Ltd. (Mitsubishi Chemical Group Corp.)
• Inventors: Kakizaki, Tetsuji, Inoue, Takayuki, Ochiumi, Masahide
• Primary Examiner(s): Robinson, Ellis
• Application Number:
  US05/661,413
• Time in Patent Office: 629 Days
• Field of Search: 428/492, 428/483, 428/480, 428/474, 428/521, 428/520, 428/500, 428/522, 426/127, 156/306, 156/309, 156/334, 156/338
• US Class Current: 428/476.1
• CPC Class Codes: B32B 2307/7242 Non-permeable
• CPC Class Codes: B32B 2307/7265 Non-permeable
• CPC Class Codes: B32B 2439/00 Containers; Receptacles closures therefor B32B2435/00
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/306 comprising vinyl acetate or vinyl alcohol (co)polymers
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: Y10T 428/31746 Polymer of monoethylenically unsaturated hydrocarbon
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31797 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31826 Of natural rubber
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31928 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31931 Polyene monomer-containing
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer

Abstract

In a process for preparing a laminated resin product by melt-laminating (1) a modified polyolefin composition with (2) a polyester, a polyamide or a hydrolyzed copolymer of ethylenevinylacetate, the improvement comprising using as the modified polyolefin a modified polyolefin composition which comprises a mixture of 60 - 97 wt.% of a polyolefin which polyolefin comprises from 0.1 to 100 wt.% of a polyolefin modified with an unsaturated acid or anhydride content is from 0.01 to 10 wt.% of the total polyolefin content and wherein an unmodified polyolefin comprises from 99.9 to 0 wt.% of the total polyolefin content with 40 - 3 wt.% of a rubber component having 40 - 140 of Mooney viscosity 50 ML₁ + ₄ (100° C) and the product so produced.

Claims

1. In a process for preparing a laminated resin product by melt-laminating (1) a modified polyolefin composition with (2) a polyester, a polyamide or a hydrolyzed copolymer of ethylene-vinylacetate, the improvement comprising:

laminating a layer of said polyester, polyamide or hydrolyzed copolymer or ethylene-vinyl-acetate with a layer of said modified polyolefin composition comprising a mixture of 60 -97 wt.% of a polyolefin which comprises from 0.1 to 100 wt.% of a polyolefin modified with an unsaturated carboxylic acid or anhydride thereof such that the unsaturated acid or anhydride content is from 0.01 to 10 wt.% of the total polyolefin content and wherein an unmodified polyolefin comprises from 99.9 to 0 wt.% of the total polyolefin content with 40 - 3 wt.% of a rubbery component having a Mooney viscosity (50 MH₁ + ₄ (100°

C) ) of 40 - 140.

2. The process for preparing a laminated resin product of claim 1, wherein 2 - 30 wt.% of said polyolefin is substituted with a soft resin of a low density polyethylene having a melt index of 0.2 to 30 and a specific gravity of 0.915 to 0.925 or a copolymer of ethylene-vinylacetate having a melt index of 0.5 to 20 and a vinylacetate component content of less than 40 wt.%.

3. The process for preparing a laminated resin product of claim 1, wherein 0.1 to 5 wt. parts of a polyamide or a thermoplastic polyester is added to 100 wt. parts of the modified polyolefin composition.

4. The process of claim 1, wherein the rubber component is a ethylene-propylene rubber or an ethylene-propylene terpolymer.

5. The process of claim 1, wherein the rubber component is an ethylene-propylene terpolymer having as the third component either ethylidenenorbornene or cyclopentadiene.

6. A laminated resin product, which comprises:

(1) a gas-barrier polymer layer of a polyester, a polyamide or a hydrolyzed copolymer of ethylene-vinylacetate and (2) a modified polyolefin composition layer laminated thereon, wherein said modified polyolefin composition is a mixture of 60 - 97 wt.% of a polyolefin which polyolefin comprises 0.1 to 100 wt.% of a polyolefin modified with an unsaturated carboxylic acid or anhydride thereof such that the unsaturated acid or anhydride content is from 0.01 ot 10 wt.% of the total polyolefin content and wherein an unmodified polyolefin comprises from 99.9 to 0 wt.% of the total polyolefin content with 40 - 3 wt.% of a rubber component having a Mooney viscosity (50 ML₁ + ₄ (100°

C) ) of 40 - 150.

9. The laminated resin product of claim 6, wherein 2-30 wt.% of said polyolefin is substituted with a soft resin of a low density polyethylene having a melt index of 0.2 to 30 and a specific gravity of 0.915 to 0.925 or a copolymer of ethylene-vinylacetate having a melt index of 0.5 to 20 and a vinylacetate component content of less than 40 wt.%.

10. The laminated resin product of claim 6, wherein 0.1 to 5 wt. parts of a polyamide or a thermoplastic polyester is added to 100 wt. parts of the modified polyolefin composition.

11. The laminated resin product of claim 6, wherein the rubber component is an ethylene-propylene rubber or an ethylene-propylene terpolymer.

7. A laminated resin product, which comprises:

(1) a gas-barrier polymer layer of a polyester, a polyamide or a hydrolyzed copolymer of ethylene-vinylacetate and (2) a modified polyolefin composition layer as a middle layer and (3) a polyolefin layer, wherein said modified polyolefin composition is a mixture of 60 - 97 wt.% of a polyolefin which polyolefin comprises from 0.1 to 100 wt.% of a polyolefin modified with an unsaturated carboxylic acid or anhydride thereof such that the unsaturated acid or anhydride content is from 0.01 to 10 wt.% of the total polyolefin content and wherein an unmodified polyolefin comprises from 99.9 to 0 wt.% of the total polyolefin content with 40 - 3 wt.% of a rubber component having a Mooney viscosity (50 ML₁ + ₄ (100°

) ) of 40 - 150.

8. A laminated resin product, which comprises:

(1) a gas-barrier polymer layer of a polyester, a polyamide or a hydrolyzed copolymer of ethylene-vinyl acetate and (2) modified polyolefin composition layers which are laminated on both surfaces of said gas-barrier polymer layer and (3) polyolefin layers which are laminated on each of said modified polyolefin composition layers, wherein said modified polyolefin composition is a mixture of 60 - 97 wt.% of a polyolefin which polyolefin comprises from 0.01 to 100 wt.% of a polyolefin modified with an unsaturated carboxylic acid or anhydride thereof such that the unsaturated acid or anhydride content is from 0.01 to 10 wt.% of the total polyolefin content and wherein an unmodified polyolefin comprises from 99.9 to 0 wt.% of the total polyolefin content with 40 - 3 wt.% of a rubber component having a Mooney viscosity (50 ML₁ + ₄ (100°

0 C) of 40 - 150.