Polysiloxane based in situ polymer blends-compositions, articles and methods of preparation thereof

A technology of polysiloxane and polymer, applied in the field of in-situ polymer blend based on polysiloxane - its composition, article and preparation, which can solve the problems of hindering use

Inactive Publication Date: 2009-09-16
FUJIFILM HUNT SMART SURFACES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, silicones have been hindered in their use due to durability issues and the difficulty of forming a strong bond between the silicone layer and the substrate

Method used

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  • Polysiloxane based in situ polymer blends-compositions, articles and methods of preparation thereof
  • Polysiloxane based in situ polymer blends-compositions, articles and methods of preparation thereof
  • Polysiloxane based in situ polymer blends-compositions, articles and methods of preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0203] Synthesis of polysiloxane-based in situ polymer blends

[0204] The blend reaction was performed in a fume hood using a 3-neck round bottom flask equipped with a condenser and mechanical stirrer and continuously purged with nitrogen. For example, 32 ml of hydroxyl-terminated polydimethylsiloxane having a viscosity of 8,000 cSt at 25°C and 0.386 g of benzoyl peroxide were added to the reactor, and the blend was stirred vigorously for 20 minutes. 12.3 ml of styrene and 35.4 ml of n-butyl acrylate were added to the reactor, and the mixture was stirred continuously for 20 minutes. 20 mL of deionized water was added, and the system was stirred for 20 minutes. Then the reactor was immersed in a water bath at a temperature of 100°C. The color turned off-white within 10 minutes, and the color and viscosity continued to increase throughout the reaction period. After 2 to 3 hours the reaction was complete. The condenser was removed for the last 15 minutes to remove most of ...

Embodiment 2

[0206] Synthesis of polysiloxane-based in situ polymer blends

[0207] The reaction was carried out as before, but using 32 ml of hydroxyl-terminated polysiloxane having a viscosity of 20,000 cSt at 25° C. and 18.5 ml of styrene, 52.6 ml of n-butyl acrylate, 0.836 g of benzoyl peroxide and 20 ml of deionized water. Examples 1 and 2 can be performed in various solvents, including but not limited to toluene, ether, tetrahydrofuran (THF), benzene, methylene chloride, and hexanes. The viscosity of polysiloxanes can range from about 10 to about 100 cSt at 25°C, from about 2,000 to about 8,000 cSt at 25°C and from about 10,000 to about 50,000 cSt at 25°C scope. In a specific embodiment, the polysiloxane has a viscosity of 3,500 cSt. Additionally, initiators include, but are not limited to, benzoyl peroxide, di-tert-butyl peroxide, cumyl hydroperoxide, t-butyl hydroperoxide, AIBN, azo-bis-alkylnitriles, and Di-tert-butyl peroxide.

Embodiment 3

[0209] Exemplary tie coat and top coat formulations

[0210] Exemplary formulations of the tie coat and top coat described herein are shown in Table 2 below, but are not limiting. In each coating, the material was divided into two parts (A and B) before mixing.

[0211] Table 2: Tie coat and top coat formulations (Formulations A and B are expressed in metric units)

[0212] link coating

[0213] A+B top coat Element 1000ml 500ml 250ml 100ml A RTV-11 766.871 383.436 191.718 76.687 SF-1147 92.025 46.012 23.006 9.202

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Abstract

Stable blend compositions composed of mixtures of polysiloxane(s) and organic polymer(s) are claimed. These polymer blends are white and opaque indicating the presence of phase separation on the micron scale. Such blends can be stored for long periods of time (years) without exhibiting evidence of macroscopic phase separation. These stable blends are achieved without substantial crosslinking as evidenced by the fact that the polymer blend is readily dissolved in a suitable organic solvent for molecular weight characterization. The stable blends of the present invention have particular utility as fouling release coatings for marine applications.

Description

[0001] US patent application [0002] This US patent application is a patent application for utility model filed pursuant to U.S.C. 35 § 111(a). [0003] Related U.S. Patent Applications [0004] This U.S. patent application is related to, and claims priority to, U.S. Provisional Patent Application No. 60 / 832,971, filed July 25, 2006, entitled "Polysilicone Oxane-Based In-situ Polymer Blends (Polysiloxane-Based In-situ Polymer Blends)". This U.S. patent application is also related to, and claims priority to, U.S. Provisional Patent Application No. 60 / 832,972, filed July 25, 2006, which is entitled "Polysilicone Oxane-based in-situ polymer blends (Method for Preparing Polysiloxane-Based In-situ Polymer Blends)". [0005] Citing References [0006] Each of the applications and patents cited herein and the documents or references cited in each of the applications and patents (including during the proceedings for each granted patent; "Application Citations"), and these The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/72
Inventor J·P·莫里斯S·P·吉多J·W·梅斯
Owner FUJIFILM HUNT SMART SURFACES
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