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Polyvinylbutyral compositions and blends having enhanced surface properties and articles made therefrom

A kind of polyvinyl butyral and composition technology, applied in the field of molded products

Inactive Publication Date: 2006-08-02
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to obtain such blends of PVB with other polymers in a low-cost manner

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative Embodiment C1

[0030] Extrusion Process for Making Polymer Blends and Physical Properties of the Blends

[0031] Will ECOCITE TM，1 With ABS (Magnum  3490, available from Dow Chemical Corp.) melt blended. Comparative example C1 does not contain Ecocite TM . During melt blending, the components were fed into the blender using separate controlled loss-in-weight feeders. The mixture was melt compounded in a 40 mm Werner & Plleiderer co-rotating twin-screw extruder with a barrel temperature of about 170-220°C and a die temperature of about 220°C. Add all components to the first barrel zone. Extrusion takes place through the orifice under vacuum. The screw speed was 250 rpm and the total feed rate to the extruder was 150 lbs / hr.

[0032] The resulting strands were quenched in water, cut into pellets, and blown with nitrogen until cooled. The moisture of the resulting pellets was adjusted to 0.1%-0.2% as needed by drying or adding additional water. Tensile specimens were obtained by injec...

Embodiment 4-6 and comparative Embodiment C2

[0038] Use above-mentioned embodiment 1-3 and C1 same method, step and test method to carry out embodiment 4-6 in table 2 and comparative example C2, difference is to use Magnum  9010 instead of Magnum  3490.

[0039] Comparative Example 2

Embodiment 7-9 and comparative Embodiment C3

[0041] Use above-mentioned embodiment 1-3 and C1 same method, step and test method to carry out embodiment 7-9 in table 3 and comparative example C3, difference is to use Magnum  9035 instead of Magnum  3490.

[0042] Modified Compressive Shear Stress (CSS) Test for Determining Adhesion of Laminated Polymer Sheets

[0043] According to ISO test method 294, 2 mm thick square (5 inch x 5 inch) panels were molded in an injection molding machine. The PVB sheet was sandwiched between two panels in a humidity-controlled (relative humidity: 23% RH) room. After hot pressing at 135°C for 20 minutes, the 5 inch by 5 inch laminated polymer panels were cut into six 1 inch by 1 inch squares from the center. The six squares were dried overnight in a vacuum oven at 60°C. Each square was cut at an angle of 45 degrees in an Instron tester in a humidity-controlled (relative humidity: 50% RH) room. Record the force (CSS) required to shear the square apart in lbs / in. The average and stand...

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PUM

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Abstract

The present invention provides a polymer blended compositions toughened with polyvinylbutyral having enhanced adhesive surface properties, including enhanced surface adhesion and low surface gloss, are disclosed. Also disclosed are articles of manufacture comprising the compositions described herein.

Description

[0001] This application claims the benefit of US Provisional Patent Application 60 / 483,336, filed June 28,2003. field of invention [0002] The present invention relates to blends of polyvinyl butyral (PVB) with acrylonitrile / butadiene / styrene (ABS) and / or polycarbonate (PC) and / or nylon. More particularly, the present invention relates to such blends, methods of making such materials and molded articles made from such materials. Background of the invention [0003] ABS is generally a glossy resin that can be molded into housings for toys and small appliances, as well as other small accessories, and is sometimes preferred, for example, as matting material for computer housings and automotive interior panels. ABS with low surface gloss can be prepared by known methods. For example, ABS having a relatively large (diameter greater than 0.4 micron, preferably greater than 1 micron) rubbery matrix prepared specifically by bulk polymerization or other agglomeration techniques can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L69/00B32B27/08C08K5/544C08L23/02C08L23/06C08L23/12C08L27/06C08L29/14C08L51/06C08L67/00C08L67/02C08L77/00C08L101/08C09J155/02
CPCC08L69/00C08L101/08B32B27/08C08L51/06C08L23/025C08L67/02C09J155/02C08L27/06C08K5/544C08L55/02C08L67/00C08L23/06C08L23/12C08L77/00C08L2205/08C08L29/14C08L2666/02C08L2666/04C08L2666/14B32B27/302B32B2307/10B32B27/18B32B2367/00B32B2369/00B32B2355/02B32B2607/00B32B27/34B32B2377/00B32B27/36B32B27/306B32B2329/06B32B27/365
Inventor W·-C·李I·-C·W·王
Owner EI DU PONT DE NEMOURS & CO
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