Polycarbonate, method for preparing thereof, and application thereof

Patent metadata

Field	Value
Publication number	US-11118010-B2
Application number	US-201916609865-A
Country	US
Kind code	B2
Filing date	May 22, 2019
Priority date	Apr 24, 2019
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A polycarbonate, a preparation method thereof, and an application thereof are provided. First, an ureido-pyrimidinone type diisocyanate is prepared by a first compound and a second compound. Then, a third compound and the ureido-pyrimidinone type diisocyanate are reacted to obtain a polycarbonate. The polycarbonate replaces scratch resistant metal material to avoid the disadvantages of the signal shielding, heavy weight, and static electricity when using the scratch resistant metal material in the winter. The body housing is made of polycarbonate can have a self-healing property and a good heat resistance, so the internal components can be well protected.

First claim

What is claimed is:

1. A polycarbonate, comprising a following chemical formula:

wherein n is a number greater than 1.

2. The polycarbonate according to claim 1 , wherein the polycarbonate is prepared by ureido-pyrimidinone type isocyanate and polycarbonate diol.

3. The polycarbonate according to claim 2 , wherein the ureido-pyrimidinone type isocyanate has a following chemical formula:

and the polycarbonate diol has a following chemical formula:

wherein n is a number greater than 0.

4. The polycarbonate according to claim 2 , wherein the ureido-pyrimidinone type isocyanate is prepared by a first compound and a second compound;
wherein the first compound comprises pyrimidinone compounds; and
wherein the second compound comprises a following chemical formula:

5. The polycarbonate according to claim 4 , wherein the first compound is ureido pyrimidinone having a following chemical formula:

6. A method for preparing the polycarbonate of claim 1 , comprising following steps:
step S1, providing a first compound and a second compound, wherein the first compound and the second compound are refluxed at 90-110° C. for 2-20 hours under argon or nitrogen atmosphere and are cooled to room temperature to obtain a first precipitate, and the first precipitate is filtered with an alkane solution for 18-36 hours and dried for 2-3 days to obtain an ureido-pyrimidinone type isocyanate; and
step S2, providing a third compound, wherein the third compound and the ureido-pyrimidinone type isocyanate prepared in the step S1 are refluxed at 90-110° C. for 2-20 hours under the argon or nitrogen atmosphere and are cooled to room temperature to obtain a second precipitate, and the second precipitate is filtered with the alkane solution for 18-36 hours and dried for 2-3 days to obtain the polycarbonate; and
wherein the first compound comprises pyrimidinone compounds;
wherein the second compound comprises a following chemical formula:

and
wherein the third compound comprises polycarbonate diol.

7. A body housing comprising the polycarbonate of claim 1 .

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Wang Yamin

Classifications

• C08G18/3206

  aliphatic · CPC title

• C08G18/2865

  Compounds having only one primary or secondary amino group; Ammonia · CPC title

• C08G18/44

  Polycarbonates · CPC title

• C08G64/42 Primary

  Chemical after-treatment · CPC title

• C08G18/714

  containing nitrogen in addition to isocyanate or isothiocyanate nitrogen · CPC title