# US 2018/0022899 A1 · Flame retardant resin composition, thermosetting resin composition, composite metal substrate and flame retardant electronic material

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- Number: US 2018/0022899 A1
- Document ID: US20180022899A1
- Status: Published application
- Kind: A1
- Application number: 15/600,177
- Filed: 2017-05-19
- Published: 2018-01-25
- Earliest claimed: 2016-07-21
- Assignees: Guangdong Guangshan New Material Co., Ltd.
- Applicants: Guangdong Guangshan New Material Co., Ltd.
- Inventors: Qingchong PAN
- Web page: https://patentgrep.com/patent/US20180022899A1

## CPC

- C08K 5/5357: cyclic
- C08J 5/249: {characterised by the additives used in the prepolymer mixture}
- C08K 5/0066: {Flame-proofing or flame-retarding additives}
- C08K 5/21: Urea; Derivatives thereof, e.g. biuret
- C08K 5/34922: {Melamine; Derivatives thereof}
- C08K 5/3725: {containing nitrogen}
- C08K 5/375: containing six-membered aromatic rings {(C08K5/3725 takes precedence)}
- C08K 5/5205: {Salts of P-acids with N-bases}
- C09K 21/10: containing nitrogen
- C09K 21/12: containing phosphorus
- C08J 2363/00: Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08K 5/523: with hydroxyaryl compounds
- C08K 5/5313: Phosphinic compounds, e.g. R2=P(:O)OR'
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

The present invention provides a flame retardant resin composition, a thermosetting resin composition, a composite metal substrate and a flame retardant electronic material, wherein the flame retardant composition comprises a sulfur-containing flame retardant, a phosphorus-containing flame retardant and/or a nitrogen-containing flame retardant, and a halogen-free epoxy resin. The synergistic effect of the sulfur-containing flame retardant, phosphorus-containing flame retardant and nitrogen-containing flame retardant in the flame retardant composition of the present invention makes the resultant copper-clad laminate have better heat resistance, water resistance, adhesion, mechanical properties and electrical properties, while having better flame retardancy. While having better flame retardancy, the pouring sealant prepared therefrom has the characteristics of short dry time, low viscosity, good thermal conductivity and good stability, and is a kind of environmentally friendly flame retardant composition having a great economy.

## Claims

### Claim 1

A flame retardant resin composition, wherein the flame retardant composition comprises a sulfur-containing flame retardant, a phosphorus-containing flame retardant and/or a nitrogen-containing flame retardant, and a halogen-free epoxy resin.

### Claim 2 (depends on 1)

The flame retardant resin composition according to claim 1, wherein the sulfur element in the flame retardant composition is in an amount of 5 wt. % or less.

### Claim 3 (depends on 1)

The flame retardant resin composition according to claim 1, wherein the phosphorus element in the flame retardant composition is in an amount of 0.1 wt. % or more.

### Claim 4 (depends on 1)

The flame retardant resin composition according to claim 1, wherein the nitrogen element in the flame retardant composition is in an amount of 0.1 wt. % or more.

### Claim 5 (depends on 1)

The flame retardant resin composition according to claim 1, wherein the sulfur-containing flame retardant is p-benzenedithiol and/or 4,4′-diaminodiphenyl disulfide;
the phosphorus-containing flame retardant is anyone selected from the group consisting of DOPO etherified bisphenol A, DOPO modified epoxy resin, tri-(2,6-dimethylphenyl)phosphine, tetra-(2,6-dimethylphenyl)resorcinol bisphosphate, resorcinol tetraphenyl diphosphate, triphenyl phosphate, bisphenol A bis-(diphenyl phosphate), phosphonitrile flame retardant,
10-(2,5-dihydroxyphenyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide,
10-(2,5-dihydroxynaphthyl)-10-hydro-9-oxa-10-phosphaphenanthrene-10-oxide,
9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, or a mixture of at least two selected therefrom;
the nitrogen-containing flame retardant is anyone selected from the group consisting of biurea, melamine and melamine phosphate, or a mixture of at least two selected therefrom.

### Claim 6 (depends on 1)

The flame retardant resin composition according to claim 1, wherein the flame retardant resin composition further comprises other flame retardant materials.

### Claim 7 (depends on 6)

The flame retardant resin composition according to claim 6, wherein said other flame retardant material is anyone selected from the group consisting of organosilicon flame retardants, chlorine-containing organic flame retardants and inorganic flame retardants, or a mixture of at least two selected therefrom.

### Claim 8 (depends on 7)

The flame retardant resin composition according to claim 7, wherein the organosilicon flame retardant is anyone selected from the group consisting of silicone oil, silicone rubber, silane coupling agent, polysiloxane and organosilanolamide, or a mixture of at least two selected therefrom;
the chlorine-containing organic flame retardant is anyone selected from the group consisting of dioctyl tetrachlorophthalate, chlorendic anhydride, chlorendic acid and tetrachlorobisphenol A, or a mixture of at least two selected therefrom;
the inorganic flame retardant is anyone selected from the group consisting of aluminum hydroxide, magnesium hydroxide, antimony trioxide and zinc borate, or a mixture of at least two selected therefrom.

### Claim 9 (depends on 1)

The flame retardant resin composition according to claim 1, wherein the halogen-free epoxy resin is anyone selected from the group consisting of bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol type novolac epoxy resin, bisphenol A type novolac epoxy resin, o-cresol novolac epoxy resin, dicyclopentadiene type epoxy resin, isocyanate type epoxy resin and biphenyl type epoxy resin, or a mixture of at least two selected therefrom.

### Claim 10 (depends on 1)

The flame retardant resin composition according to claim 1, wherein the halogen-free epoxy resin in the flame retardant resin composition is in an amount of 70-95 wt. %.

### Claim 11 (depends on 1)

A thermosetting resin composition, wherein the thermosetting resin composition comprises the flame retardant resin composition according to claim 1.

### Claim 12 (depends on 11)

The thermosetting resin composition according to claim 11, wherein the thermosetting resin composition further comprises a curing agent.

### Claim 13 (depends on 12)

The thermosetting resin composition according to claim 12, wherein the curing agent is anyone selected from the group consisting of dicyandiamide, phenolic resin, aromatic amine, anhydride, active ester curing agent and active phenolic curing agent, or a mixture of at least two selected therefrom.

### Claim 14 (depends on 11)

The thermosetting resin composition according to claim 11, wherein the thermosetting resin composition further comprises a curing accelerator agent.

### Claim 15 (depends on 14)

The thermosetting resin composition according to claim 14, wherein the curing accelerator agent is anyone selected from the group consisting of imidazole curing accelerator, organic phosphine curing accelerator and tertiary amine curing accelerator, or a mixture of at least two selected therefrom;
the imidazole curing accelerator is anyone selected from the group consisting of 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2-undecyl-imidazole, 1-benzyl-2-methylimidazole, 2-heptadecylimidazole, 2-isopropyl-imidazole, 2-phenyl-4-methylimidazole, 2-dodecylimidazole and 1-cyanoethyl-2-methylimidazole, or a mixture of at least two selected therefrom.

### Claim 16 (depends on 1)

A flame retardant electronic material, wherein the flame retardant electronic material comprises the flame retardant resin composition according to claim 1.

### Claim 17 (depends on 1, 16)

The flame retardant electronic material according to claim 16, wherein the flame retardant electronic material comprises the following components of from 70 to 90 parts by weight of the flame retardant resin composition according to claim 1, from 15 to 25 parts by weight of an organosilicon filler, from 5 to 10 parts by weight of a curing agent, from 1 to 3 parts by weight of a curing accelerator, from 2 to 8 parts by weight of a diluent and from 1 to 3 parts by weight of a defoamer.

### Claim 18 (depends on 17)

The flame retardant electronic material according to claim 17, wherein the organosilicon filler is N-(β-aminoethyl)-γ-aminopropyl-triethoxysilane and/or glycidyloxypropyltrimethoxysilane.

### Claim 19 (depends on 17)

The flame retardant electronic material according to claim 17, wherein the curing agent is anyone selected from the group consisting of 4,4-diaminodiphenyl ether, 4,4-diaminodiphenyl sulfone, methyltetrahydrophthalic anhydride and methylhexahydrophthalic anhydride, or a mixture of at least two selected therefrom.

### Claim 20 (depends on 17)

The flame retardant electronic material according to claim 17, wherein the curing accelerator is anyone selected from the group consisting of 2-methylimidazole, resorcinol, dimethylbenzylamine and 2-ethyl-4-methylimidazole, or a mixture of at least two selected therefrom.