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Polycaprolactone modified polysiloxane, preparing method and application

A technology of polysiloxane and polycaprolactone, which is applied in the field of macromolecules, can solve the problems of not explicitly mentioning copolymer examples and not mentioning the preparation method of polycaprolactone-polysiloxane graft copolymers, etc.

Active Publication Date: 2018-05-18
LANGFANG NIPPON PAINT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By analyzing the above-mentioned documents, the prior art does not mention the preparation method of polycaprolactone-polysiloxane graft copolymer, nor does it clearly mention that the above-mentioned copolymer is added to the coating as an auxiliary agent for practical application. example

Method used

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  • Polycaprolactone modified polysiloxane, preparing method and application
  • Polycaprolactone modified polysiloxane, preparing method and application
  • Polycaprolactone modified polysiloxane, preparing method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0136] Polycaprolactone-modified polysiloxanes having the formula (I), R 1 for CH 3 CH 2 CH 2 CH 2 , R 2 and R 3 Both CH 2 CH 2 CH 2 , n=1, m=12, x=1.8, y=1.9;

[0137]

[0138] The reaction equation of the polycaprolactone modified polysiloxane with structural formula (I) is as follows:

[0139]

[0140] The first step, hydroxyl protection: In a 1L reactor, slowly add 338.1g (2.1mol) of hexamethyldisilazane dropwise to 232g (4mol) of allyl alcohol A at room temperature 1 Medium (the molar ratio of unsaturated monohydric alcohol to hexamethyldisilazane is 2:1.05). After the dropwise addition, the temperature of the reaction system was raised to 100° C., and the reaction was continued at this temperature for 6 hours, and then the reaction was stopped. The fraction at 98-100° C. was collected under normal pressure to obtain 473.2 g of allyloxytrimethylsilane with a yield of 91%.

[0141] The second step, a hydrosilylation addition: in a 1L reactor, add 393.9g (...

Embodiment 2

[0155] Polycaprolactone-modified polysiloxanes having the formula (II): R 5 for OSi(CH 3 ) 2 O, R 2 , R 3 and R 4 Both CH 2 CH 2 CH 2 CH 2 , (p+q)=1, (o+r)=10, x=2.7, y=2, z=2;

[0156]

[0157] o>0, p>0, q>0, r>0, x>0, y>0, z>0.

[0158] The first step, hydroxyl protection: In a 1L reactor, slowly add 338.1g (2.1mol) hexamethyldisilazane dropwise to 288g 3-buten-1-ol (4mol) A at room temperature 3Medium (the molar ratio of unsaturated monohydric alcohol to hexamethyldisilazane is 2:1.05). After the dropwise addition, the temperature of the reaction system was raised to 100° C., and the reaction was continued at this temperature for 6 hours, and then the reaction was stopped. The fraction at 110-115°C was collected under normal pressure to obtain 558 g of butoxytrimethylsilane with a yield of 96.9%.

[0159] The second step, a hydrosilylation addition: in a 1L reactor, add 436.3g (3mol) enbutoxytrimethylsilane and 0.2g chloroplatinic acid catalyst that are obtai...

Embodiment 3

[0172] Polycaprolactone-modified polysiloxanes having the formula (I), R 1 for CH 3 CH 2 CH 2 CH 2 , R 2 and R 3 Both CH 2 CH 2 CH 2 CH 2 CH 2 , n=2, m=19.6, x=4, y=2;

[0173] The first step, hydroxyl protection: In a 1L reactor, slowly drop 338.1g (2.1mol) hexamethyldisilazane to 344g (4mol) 4-penten-1-ol A at room temperature 4 Medium (the molar ratio of unsaturated monohydric alcohol to hexamethyldisilazane is 2:1.05). After the dropwise addition, the temperature of the reaction system was raised to 100° C., and the reaction was continued at this temperature for 6 hours, and then the reaction was stopped. The fraction at 98-100°C was collected under normal pressure to obtain 600 g of 4-pentenyloxytrimethylsilane with a yield of 94.9%.

[0174] The second step, a hydrosilylation: in the reactor of 1L, add successively the 4-pentenyloxytrimethylsilane and the 0.5g chloroplatinic acid catalyst (the quality of the catalyst) obtained in the first step of 474g (3mol...

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Abstract

The invention discloses polycaprolactone modified polysiloxane of the structure shown as the formula (I) or (II) (the formulas can be seen in the description), and the definition of all substitutive groups in the formulas is seen in the description. The polycaprolactone modified polysiloxane can be used as a solvent type coating additive, when polycaprolactone modified polysiloxane is added to solvent type coating, especially solvent type varnish, the surface performance of a coating film can be improved, smoothness is increased, and friction resistance is improved.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, in particular to a polycaprolactone-modified polysiloxane, in particular to a polysiloxane-modified polysiloxane which is composed of a special polysiloxane segment and a polycaprolactone segment and can be used for solvent-based coatings. Polycaprolactone-modified polysiloxane as a surface slippery agent, its preparation method and use. Background technique [0002] As we all know, polycaprolactone can be well mixed with most polymer materials, but for polysiloxane, it is difficult to mix with other polymer materials due to its low solubility parameters. melt. In the past ten years, with the continuous innovation of synthesis methods, polycaprolactone-modified polysiloxane block copolymers have been widely developed. Polycaprolactone-modified polysiloxane block copolymers can combine the excellent properties of polycaprolactone and polysiloxane two different polymer materials, such as: ...

Claims

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Application Information

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IPC IPC(8): C08G77/445C08G63/08C09D183/10
CPCC08G63/08C08G77/445C09D183/10
Inventor 张萌夏天渊果建军梅鹏
Owner LANGFANG NIPPON PAINT
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