Prepolymerized resin, preparation method thereof, resin composition comprising the same, and article made therefrom

Patent metadata

Field	Value
Publication number	US-2019292326-A1
Application number	US-201815985445-A
Country	US
Kind code	A1
Filing date	May 21, 2018
Priority date	Mar 26, 2018
Publication date	Sep 26, 2019
Grant date	—

Abstract

A prepolymerized resin and a preparation method thereof are provided, the method comprising a step of pre-reacting bis(vinylphenyl)ethane and polybutadiene. Bis(vinylphenyl)ethane may include 1,2-bis(4-vinylphenyl)ethane, 1,2-(3-vinylphenyl-4-vinylphenyl)ethane, 1,2-bis(3-vinylphenyl) ethane or a combination thereof. Polybutadiene has a 1,2-vinyl content of 85% or above and a number average molecular weight of less than 3000. A resin composition comprising the prepolymerized resin and an article made from the resin composition are also provided.

First claim

What is claimed is:

1 . A prepolymerized resin prepared by pre-reacting a composition, the composition at least comprising bis(vinylphenyl)ethane and polybutadiene, wherein the polybutadiene has a 1,2-vinyl content of 85% or above and a number average molecular weight of less than 3000.

2 . The prepolymerized resin of claim 1 , which is prepared by pre-reacting the composition in the presence of a polymerization inhibitor.

3 . The prepolymerized resin of claim 1 , wherein the composition further comprises vinyl-containing polyphenylene ether.

4 . The prepolymerized resin of claim 1 , which has a number average molecular weight of between 4,000 and 12,000.

5 . The prepolymerized resin of claim 1 , which contains a reactive vinyl group.

6 . A method of preparing the prepolymerized resin of claim 1 , comprising subjecting the composition to a pre-reaction in the presence of a polymerization inhibitor.

7 . The method of claim 6 , wherein the composition further comprises vinyl-containing polyphenylene ether.

8 . The method of claim 7 , wherein the vinyl-containing polyphenylene ether comprises vinylbenzyl-terminated polyphenylene ether resin, vinylbenzyl-modified bisphenol A polyphenylene ether resin, methacrylate-terminated polyphenylene ether resin, vinyl-containing chain-extended polyphenylene ether resin or a combination thereof.

9 . The method of claim 6 , wherein the polymerization inhibitor comprises hydroquinone, p-benzoquinone, phenothiazine, β-phenylnaphthylamine, 4-t-butylcatechol, methylene blue, 4,4′-butylidenebis(6-t-butyl-3-methylphenol), 2,2′-methylenebis(4-ethyl-6-t-butylphenol) or a combination thereof.

10 . The method of claim 6 , wherein peroxide is not used during the pre-reaction.

11 . The method of claim 6 , wherein the pre-reaction has a conversion rate of between 30% and 90%.

12 . The method of claim 6 , wherein, during the pre-reaction, components in the composition are partially crosslinked to leave residual vinyl groups.

13 . The method of claim 6 , wherein the polybutadiene has a number average molecular weight of between 900 and 1,500.

14 . A resin composition comprising the prepolymerized resin of claim 1 and an additive.

15 . The resin composition of claim 14 , comprising 1 to 200 parts by weight of the additive relative to 100 parts by weight of the prepolymerized resin.

16 . The resin composition of claim 14 , wherein the additive comprises polyphenylene ether, cyanate ester, maleimide resin, polyolefin, acrylate, styrene, divinylbenzene, bis(vinylbenzyl)ether, bis(vinylphenyl)ethane, triallyl isocyanurate, triallyl cyanurate, 1,2,4-trivinyl cyclohexane or a combination thereof.

17 . The resin composition of claim 14 , further comprising epoxy resin, phenolic resin, benzoxazine resin, styrene maleic anhydride, acrylic acid, polyester, amine curing agent, diallyl bisphenol A, polyamide, polyimide or a combination thereof.

18 . The resin composition of claim 14 , further comprising flame retardant, inorganic filler, curing accelerator, solvent, toughening agent, silane coupling agent or a combination thereof.

19 . An article made from the resin composition of claim 14 , comprising a resin film, a prepreg, a laminate or a printed circuit board.

20 . The article of claim 19 , which has a surface not containing branch-like pattern under visual inspection.

21 . The article of claim 20 , having a glass transition temperature as measured by reference to IPC-TM-650 2.4.24.4 of greater than 190° C. and a dissipation factor as measured by reference to JIS C2565 of less than 0.0055.

Assignees

• Elite Material Co Ltd

Inventors

• Chang Shu-Hao

Classifications

• C08L51/04

  grafted on to rubbers · CPC title

• C08F290/062

  Polyethers · CPC title

• C08J5/24

  Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs · CPC title

• C08K7/14

  Glass · CPC title

• C08J2345/00

  Characterised by the use of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Derivatives of such polymers · CPC title