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Three-dimensional random looped structures made from interpolymers of ethylene/alpha-olefins and uses thereof

A technology of olefin copolymer and olefin copolymerization, which is applied in the direction of textiles, papermaking, non-woven fabrics, etc., and can solve the problems of expensive, plastic deformation, unsuitable cushion materials, etc.

Active Publication Date: 2008-11-12
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also creates different problems, because landfills are limited to specific locations due to rising costs necessary
Furthermore, although polyurethane exhibits excellent processability, the chemicals used for its manufacture cause environmental pollution
[0004] Although mesh structures made from vinyl chloride have been proposed, such as mats for entrances, etc., they are not suitable as cushioning materials due to the fact that the plastic is prone to deformation and generates toxic hydrogen halides when burned
[0005] Thermoplastic elastomers have a combination of good elasticity and high heat resistance, but are usually relatively expensive

Method used

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  • Three-dimensional random looped structures made from interpolymers of ethylene/alpha-olefins and uses thereof
  • Three-dimensional random looped structures made from interpolymers of ethylene/alpha-olefins and uses thereof
  • Three-dimensional random looped structures made from interpolymers of ethylene/alpha-olefins and uses thereof

Examples

Experimental program
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specific Embodiment approach

[0199] The following examples are presented to illustrate embodiments of the invention, but are not intended to limit the invention to the particular embodiments shown. All parts and percentages are by weight unless indicated to the contrary. All values ​​are approximate. When numerical ranges are indicated, it is to be understood that embodiments outside the stated ranges may still fall within the scope of the invention. Specific details described in each example can be construed as characteristic of the invention if required.

Embodiment 1-4， comparative example A-C

[0271] General high throughput parallel polymerization conditions

[0272] Polymerization was performed using a high throughput parallel polymerization reactor (PPR) available from Symyx technologies, Inc. and operated essentially in accordance with U.S. Patent Nos. 6,248,540, 6,030,917, 6,362,309, 6,306,658, and 6,316,663. Ethylene copolymerization was carried out at 130°C at 200 psi (1.4 MPa) with ethylene on demand and using 1.2 equivalents of Cocatalyst 1 (based on total catalyst used) (1.1 equivalents when MMAO was present). A series of polymerization reactions were performed in a parallel pressure reactor (PPR) containing 48 individual reactor units in a 6x8 array fitted with pre-weighed glass tubes. The operating volume within each reactor unit is 6000 μL. Each unit controls temperature and pressure, and provides agitation through individual paddles. Monomer gas and quenching gas are directly sent into the PPR unit through pipelines, and are controlled by automatic va...

Embodiment 1

[0289] The DSC curve for the polymer of Example 1 showed a melting point (Tm) of 115.7°C with a heat of fusion of 158.1 J / g. The corresponding CRYSTAF curve shows the highest peak at 34.5°C with a peak area of ​​52.9%. The difference between DSC Tm and Tcrystaf was 81.2°C.

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Abstract

A reticulation for a cushion pad comprises a random ring such as a 3D random ring adhered to each other; wherein, the ring is in contact with each other via bending successive fibre (made from ethylene / alpha-olefin polymer) in melt state, with thermal bonding of contact points mostly. The structure provided presently has excepted heat resistance, durability and cushioning property. The structure for the cushion pas can be used for furniture or vehicle seats.

Description

technical field [0001] The present invention relates to a network structure for random loop cushions made from ethylene / α-olefin interpolymers having desirable durability and cushioning properties for furniture, beds, vehicle seats, boat seats, the manufacture of which Methods of network structures, and products made therefrom. Background technique [0002] Thermoplastic elastomers, foamed polyurethanes, inelastic crimped fiber battings, resin bonded or stiffened fabrics made of inelastic crimped fibers, etc. are used today as cushioning materials for furniture, beds, trains, automobiles, and the like. [0003] On the one hand, foamed cross-linked polyurethane has excellent durability as a cushion material, but on the other hand, it has poor moisture permeability and water permeability, and accumulates heat to cause stuffiness. Furthermore, because it is not thermoplastic, recycling of the material is difficult, and waste polyurethane is typically incinerated. However, bur...

Claims

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Application Information

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IPC IPC(8): C08F297/08C08F4/646C08F2/38C08F4/659C08F4/6592C08F10/00C08F110/02C08F210/16D04H3/03D04H3/05D04H3/14
CPCC08F4/65912C08F10/14C08F4/65908C08F110/02C08F297/086C08L53/00C08F2410/01C08F4/659C08F297/083C08L23/10C08F210/16C08L53/005C08F10/00C08F295/00C08L23/0815C08F297/08D04H3/03D04H3/05D04H3/14C08F4/65904C08L2666/02C08L2666/06C08L2666/04C08F2500/09C08F2500/03C08F2500/12C08F2500/20C08F210/08C08F210/14C08F2500/11C08F2500/21
Inventor R·M·帕特尔
Owner DOW GLOBAL TECH LLC