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Composition, foam, and article made therefrom

A foam material and composition technology, applied in the field of foam material composition, foam material and products, can solve the problems of low water absorption, lack of functional foam material performance, unevenness, etc.

Inactive Publication Date: 2014-06-18
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] While the above methods can provide foamed or expanded materials, these methods often result in non-uniform and lack of functional foam properties such as soft touch, reduced deflection, improved relaxation typically required in soft touch applications performance and low water absorption structure
Combinations of chemical blowing agents and mechanical interventions in the molding process (such as cores, reverse gas, back pressure and quick release) can provide some improvement, but still do not provide the high level of demand required in the automotive, industrial or consumer markets

Method used

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  • Composition, foam, and article made therefrom
  • Composition, foam, and article made therefrom
  • Composition, foam, and article made therefrom

Examples

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preparation example Construction

[0048] The preparation of heat-expandable microspheres may be any method that includes the step of polymerizing monomers in aqueous suspension in the presence of a blowing agent, and is known, as in earlier publications, e.g., U.S. Pat. No. 3,615,972, WO99 / 46320 and WO 99 / 43758, the contents of which are hereby incorporated by reference.

[0049] The thermally expandable microspheres may be present in the composition according to the invention in an amount ranging from 0.1% to about 10% by weight, based on the total weight of the composition. Generally, if the amount of heat-expandable microspheres is less than 0.1 wt%, the foaming effect and foam properties may be adversely affected. On the other hand, generally if the amount of thermally expandable microspheres is greater than 10% by weight, the mechanical properties of the foam may be impaired. In some embodiments of the present invention, the thermally expandable microspheres contained in the composition are preferably a...

Embodiment

[0115] Illustrative embodiments will now be described by way of example in order to demonstrate some of the advantages of the invention, but other advantages of the invention should be apparent to those skilled in the art.

[0116] Various specific test procedures for determining properties such as density, elongation at break, tensile strength, Trouser Tear, compression ratio, Shore A hardness are given in Table 1 for convenience. However, when a person of ordinary skill reads this patent and wishes to determine whether a composition or polymer has a specific property given in a claim, any published or widely recognized method or test procedure may be followed to determine the property, but in particular The procedures given are preferred. Each claim should be construed to cover the results of any of these procedures, even to the extent that different procedures may yield different results or measurements. In general, all numerical values ​​can be considered to be "about" or...

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Abstract

The present invention discloses a composition comprising a) a thermoplastic vulcanizate and b) a thermo-expandable microsphere comprising a polymer shell and a propellant encapsulated in said polymer shell based on the total weight of the composition. The composition is suitable for making foam with balanced load deflection and elasticity, including soft touch, reduced to low deflection, improved relaxation performance and low water absorption, replacing either soft paint or assembled constructions with foam sheets and meeting requirements in soft touch applications.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of prior US Patent Application Serial No. 13 / 281,076, filed October 25, 2011, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to compositions, preferably compositions for making foams, and especially compositions for making foams having a uniform closed-cell structure, and foams and articles made therefrom. Background technique [0004] Thermoplastic elastomers (TPE) are both elastomers and thermoplastics. They differ from thermoset rubbers, which are elastomeric but not thermoplastic due to cross-linking or vulcanization of the rubber, and from conventional thermoplastics, which are generally rigid and hard, but non-elastomeric. [0005] Thermoplastic vulcanizates are a class of TPEs in which the crosslinked rubber forms a dispersed particulate elastomer phase within the thermoplastic phase of a rig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/32C08L23/12C08L23/16C08L51/06
CPCC08L51/06C08L2203/14C08L23/12B32B3/26C08J9/32C08L23/16C08L23/10C08J2453/02C08J2451/06C08J2300/22B32B5/18B32B27/065B32B2274/00Y10T428/249991
Inventor M·M·豪格L·凯南斯
Owner EXXONMOBIL CHEM PAT INC
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