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Resin composition for foam and use thereof

A resin composition and foam technology, applied in synthetic resin layered products, applications, layered products, etc., can solve the problems of touch change, hardness reduction, and low foaming ratio.

Active Publication Date: 2006-08-02
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the foam is used at high temperature, the hardness will be greatly reduced and the touch will be changed.
[0007] In addition, in WO95 / 33006 and Japanese Patent Application Laid-Open No. 8-231817, resin compositions containing ethylene-α-olefin copolymers and styrene-based block copolymers are known, but regarding ethylene-polar monomers Copolymers or cross-linked foams are not described
[0008] Furthermore, although WO02 / 14423 discloses a cross-linked foam obtained from a thermoplastic elastomer containing ethylene-α-olefin copolymer and styrene-based block copolymer, only a low expansion ratio can be obtained. , Foam with high specific gravity
In addition, there is no description about ethylene-polar monomer copolymers

Method used

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  • Resin composition for foam and use thereof
  • Resin composition for foam and use thereof

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0191] [Preparation of catalyst solution]

[0192] 18.4 mg of triphenylcarbenium tetrakis(pentafluorophenyl) boron salt was weighed, and 5 ml of toluene was added and dissolved to prepare a toluene solution with a concentration of 0.004 mM / ml. Weigh [dimethyl (tert-butylamide) (tetramethyl-η5-cyclopentadienyl) silane] titanium dichloride 1.8 mg, add 5 ml of toluene and dissolve, and adjust to a toluene concentration of 0.001 mM / ml solution. At the beginning of the polymerization, measure 0.38 ml of toluene solution of triphenylcarbenium tetrakis (pentafluorophenyl) boron salt, [dimethyl (tert-butylamide) (tetramethyl-η5-cyclopentadienyl) Silane] 0.38ml of toluene solution of titanium dichloride, and add 4.24ml of toluene for dilution to prepare triphenylcarbenium tetrakis (pentafluorophenyl) boron salt at 0.002mM / L in B conversion, [dimethyl (tert-butylamide) (tetramethyl-η5-cyclopentadienyl) silane] titanium dichloride 0.0005 mM / L toluene solution 5 ml in conversion of Ti. ...

Embodiment 1

[0197] Will be made up of: 80 parts by weight of ethylene·1-butene copolymer (A1-1), 20 parts by weight of styrene·butadiene·styrene block copolymer (SBS) (B-1), 3.0 parts by weight of zinc oxide, 0.6 parts by weight of dicumyl peroxide (DCP), 0.07 parts by weight of triallyl isocyanate (TAIC) [trade name M-60 (TAIC content 60%), manufactured by Nippon Kasei Co., Ltd. (TAIC content) 1, 2-Polybutadiene 0.3 weight part, azodicarbonamide 7 weight parts of the mixture, using a roll, the roll surface temperature is 120 ° C, kneading for 10 minutes, formed into a flake.

[0198] The obtained flakes are filled in a compression mold at 150kg / cm 2 , 155° C., and 30 minutes, pressurized and heated to obtain a primary cross-linked foam. The size of this pressing die is 15 mm in thickness, 150 mm in length, and 200 mm in width.

[0199] Then, this primary cross-linked foam was mixed at 150kg / cm 2 , Under the condition of 155° C., perform compression molding for 10 minutes to obtain a s...

Embodiment 2

[0202] In Example 1, 80 parts by weight of ethylene-1-butene copolymer (A1-1) was changed to 90 parts by weight, and styrene-butadiene-styrene block copolymer (SBS) (B- 1) 20 parts by weight was changed to 10 parts by weight. Except for this, the rest were the same as in Example 1, and a secondary crosslinked foam was prepared, and the physical properties were measured. The results are shown in Table 2.

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Abstract

The present invention provides a composition capable of providing a foam (noncrosslinked or crosslinked foam) of low specific gravity and low compression set (CS) excelling in tensile strength and tearing strength properties and impact resilience and exhibiting less hardness decrease at high temperature; a foam produced therefrom; and a laminate using the foam. In particular, a resin composition for foam characterized by comprising 5 to 95 pts.wt. of ethylene / alpha-olefin copolymer (A1), 5 to 95 pts.wt. of styrene block copolymer (B) and, per 100 pts.wt. of the total of components (A1) and (B), 0 to 1900 pts.wt. of ethylene / polar monomer copolymer (A2).

Description

technical field [0001] The present invention relates to a resin composition for a foam body and its use. More specifically, it relates to a resin composition capable of providing a low specific gravity and a small permanent compressive strain (CS), as well as tensile strength properties, breaking strength properties, and rebound resilience (rebound resilience). ) are all excellent, and the composition of the foam (non-crosslinked and crosslinked foam) with less decrease in elastic modulus at high temperature and its foam. Background technique [0002] Because it can obtain a resin with low specific gravity, light weight, softness and high mechanical strength, the technology of cross-linked foam is adopted, and it is widely used in building interior and exterior decoration materials, interior decoration materials, or door glass run ) and other auto parts, packaging materials, daily necessities, etc. This is because only foaming the resin in order to reduce the weight will le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L53/02A43B13/04C08J9/00B32B5/18C08J9/04
CPCB32B2307/536C08J2353/02B32B2266/0228C08L53/02C08J2423/00B32B2307/558B32B2307/54B32B5/18B32B9/025B32B2266/025A43B13/04B32B2307/5825B32B2266/0207B32B27/065B32B25/045C08J9/0061C08J2323/08B32B9/046B32B2307/51C08L23/0815C08J9/04B32B27/32B32B27/40C08J2453/00B32B2437/02C08L2666/24C08L2666/02C08L2666/06C08L25/08
Inventor 志波英治河内秀史山口昌贤
Owner MITSUI CHEM INC
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