Polycarbonate composition and preparation method thereof

Patent metadata

Field	Value
Publication number	US-10696841-B2
Application number	US-201615576853-A
Country	US
Kind code	B2
Filing date	May 27, 2016
Priority date	May 27, 2015
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A polycarbonate composition includes the following components in parts by weight: a. 30 to 86 parts of polycarbonate; b. 0.0001 to 1 part of phenols; c. 0.01 to 5 parts of hindered phenol substance; d. 8 to 50 parts of a rubber-modified graft polymer; e. 5 to 25 parts of a fire retardant; and f. 0 to 10 parts of a fire retardant synergist; wherein a sum of parts by weight of the six components a, b, c, d, e and f is 100.

First claim

What is claimed:

1. A polycarbonate composition, comprising the following components in parts by weight:
a. 30 to 86 parts of a polycarbonate;
b. 0.0001 to 0.1 part of phenols as shown in Formula I;
c. 0.01 to 5 parts of a hindered phenol substance as shown in Formula II;
d. 8 to 50 parts of a rubber-modified graft polymer;
e. 5 to 25 parts of a fire retardant; and
f. 0 to 10 parts of a fire retardant synergist;
wherein a sum of parts by weight of the six components a, b, c, d, e and f is 100;
wherein a structural formula of Formula I is as follows

wherein R 1 and R 5 represent a hydrogen group, an alkyl, an alkoxy, a hydroxyl, a carboxyl or a carbonyl, and an ester group, except for a hindered group; and R 2 , R 3 and R 4 represent a substituent containing hydrogen atoms;
wherein a molecular formula of Fonnula II is C n O m R, wherein n is greater than 2, m is greater than 2, and R represents a heteroatom.

2. The polycarbonate composition according to claim 1 , wherein a ratio by weight percentage of the phenols as shown in Formula I to the hindered phenol substance as shown in Formula II is 0.001 to 20.

3. The polycarbonate composition according to claim 1 , comprising the following components in parts by weight:
a. 30 to 86 parts of the polycarbonate;
b. 0.005 to 0.1 part of the phenols as shown in Formula I;
c. 0.03 to 1 part of the hindered phenol substance as shown in Formula II;
d. 8 to 50 parts of the rubber-modified graft polymer;
e. 5 to 25 parts of the fire retardant; and
f. 0 to 10 parts of the fire retardant synergist;
wherein a sum of parts by weight of the six components a, b, c, d, e and f is 100;
wherein the structural formula of Formula I is as follows

wherein R 1 and R 5 represent the hydrogen group, the alkyl, the alkoxy, the hydroxyl, the carboxyl or the carbonyl, and the ester group, except for the hindered group; and R 2 , R 3 and R 4 represent the substituent containing hydrogen atoms;
wherein the molecular formula of Formula II is C n O m R, wherein n is greater than 2, m is greater than 2, and R represents a heteroatom.

4. The polycarbonate composition according to claim 3 , wherein a ratio by weight percentage of the phenols as shown in Formula I to the hindered phenol substance as shown in Formula II is 0.001 to 20.

5. The polycarbonate composition according to claim 3 , comprising the following components in parts by weight:
a. 30 to 86 parts of the polycarbonate;
b. 0.01 to 0.05 part of the phenols as shown in Formula I;
c. 0.05 to 0.1 part of the hindered phenol substance as shown in Formula II;
d. 8 to 50 parts of the rubber-modified graft polymer;
e. 5 to 25 parts of the fire retardant; and
f. 0 to 10 parts of the fire retardant synergist;
wherein a sum of parts by weight of the six components a, b, c, d, e and f is 100;
wherein the structural formula of Formula I is as follows

wherein R 1 and R 5 represent the hydrogen group, the alkyl, the alkoxy, the hydroxyl, the carboxyl or the carbonyl, and the ester group, except for the hindered group; and R 2 , R 3 and R 4 represent the substituent containing hydrogen atoms;
wherein the molecular formula of Formula II is C n O m R, wherein n is greater than 2, m is greater than 2, and R represents the heteroatom.

6. The polycarbonate composition according to claim 5 , wherein a ratio by weight percentage of the phenols as shown in Formula I to the hindered phenol substance as shown in Formula II is 0.001 to 20.

7. The polycarbonate composition according to claim 1 , wherein the polycarbonate is selected from one or more of an aromatic polycarbonate, an aliphatic polycarbonate, an aromatic-aliphatic polycarbonate, a branched polycarbonate and a siloxane copolycarbonate; wherein the aromatic polycarbonate is an aromatic polycarbonate with a viscosity-average molecular weight of 13000 to 40000.

8. The polycarbonate composition according to claim 1 , wherein the phenols as shown in Formula I are selected from one or more of phenol and a long-chain alkyl phenol.

9. The polycarbonate composition according to claim 1 , wherein the hindered phenol substance as shown in Formula II is selected from a 3,5-di-tert-butyl phenol.

10. The polycarbonate composition according to claim 1 , wherein the rubber-modified graft polymer is selected from one or more of a graft copolymer prepared by a bulk polymerization method, a graft copolymer prepared by an emulsion polymerization method, and a graft copolymer prepared by a bulk-suspension polymerization method.

11. The polycarbonate composition according to claim 1 , wherein the rubber-modified graft polymer is selected from graft polymers containing the following b.1 on b.2 in parts by weight:
b.1) 5 to 95 parts of a mixture of b.1.1 and b.1.2:
b.1.1) 50 to 95 parts of one or more of styrene, styrene derivatives comprising α-methyl styrene, p-benzyl styrene and divinyl styrene, C1-C8 alkyl methacrylate, C1-C8 alkyl acrylate, dimethyl siloxane, phenyl siloxane, and multi-alkyl siloxane;
b.1.2) 5 to 50 parts of one or more of acrylonitrile, methyl acrylonitrile, C1-C8 alkyl methacrylate, and C1-C8 alkyl acrylate;
b.2) 5 to 95 parts of one or more of polybutadiene, polyisoprene, a random copolymer and a block copolymer of styrene-butadiene, a random copolymer and a block copolymer of acrylonitrile-butadiene, a copolymer of polybutadiene and polyisoprene, a copolymer of ethylene and α-alkene, a copolymer of ethylene and α-unsaturated carboxylate, a terpolymer of ethylene-propene-nonconjugated diene, an acryloyl rubber, and an organic siloxane rubber.

12. The polycarbonate composition according to claim 11 , wherein the rubber-modified graft polymer is selected from one or more of a styrene-butadiene-styrene, a styrene-butadiene rubber, a styrene-ethylene-butadiene-styrene, a graft copolymer of acrylonitrile-butadiene-styrene, a terpolymer of acrylonitrile-styrene-acrylic acid or a graft copolymer of methyl methacrylate-butadiene-styrene, and a styrene-acrylonitrile; wherein, a particle diameter of the methyl methacrylate-butadiene-styrene is 0.1 μm to 0.5 μm, a particle diameter of the acrylonitrile-butadiene-styrene in the bulk polymerization method is 0.1 μm to 2 μm, and a particle diameter of the acrylonitrile-butadiene-styrene in the emulsion polymerization method is 0.05 μm to 0.2 μm.

13. The polycarbonate composition according to claim 1 , wherein the fire retardant is selected from a halogen-based fire retardant or a halogen-free fire retardant; the halogen-based fire retardant is selected from one or more of a brominated polystyrene, a brominated polyphenyl ether, a brominated bisphenol A type epoxy resin, a brominated copolymer of styrene-maleic anhydride, a brominated epoxy resin, a brominated phenoxy resin, decabromodiphenyl oxide, decabromodiphenyl, a brominated polycarbonate, perbromotricyclopentadecane or a brominated aromatic cross-linked polymer; the halogen-free fire retardant is selected from one or more of a nitrogen-containing fire retardant, a phosphorus-containing fire retardant or a nitrogen- and phosphorus-containing fire retardant.

14. The polycarbonate composition according to claim 13 , wherein the phosphorus-containing fire retardant is selected from one or more of triphenyl phosphate, tritolyl phosphat

Assignees

• Kingfa Science & Technology Co

Inventors

• Xie Xiuhao
• Sun Donghai
• Cen yin
• Tong Wei
• Ai Junwei

Classifications

• C08L51/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title

• C08L83/04

  Polysiloxanes · CPC title

• C08L69/00 Primary

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08K5/13

  Phenols; Phenolates · CPC title

• C08L27/18

  Homopolymers or copolymers or tetrafluoroethene · CPC title