Cyclic olefin copolymer, resin composition comprising cyclic olefin copolymer, and prepreg, metal-clad laminate and printed circuit board prepared from resin composition

Abstract

The present invention provides a cyclic olefin copolymer comprising the following repeating units: (A-1) repeating units having the following structure (I):; and (A-2) at least one repeating unit having the following structure (II): [Formula (II)] In Formula (II), R1 is a straight-chain or branched divalent C1 to C6 alkyl or -R3-O-R4-, wherein R3 and R4 are each independently a direct bond or a straight-chain or branched divalent C1 to C6 alkyl, provided that R3 and R4 are not simultaneously direct bonds; R2 is a substituted or unsubstituted straight-chain or branched C2 to C8 alkenyl, -R5-OC(=O)-R6, -R5-C(=O)-O-R6, or -R5-O-R6, wherein R5 is a substituted or unsubstituted straight-chain or branched divalent C1 to C5 alkyl, and R6 is a substituted or unsubstituted straight-chain or branched C2 to C8 alkenyl.

Claims

1. A cyclic olefin copolymer comprising the following repeating units: (A-1) repeating units having the structure of formula (I): [Formula (I)]; and (A-2) at least one repeating unit having the structure of formula (II): [Formula (II)], In formula (II), R1 is a straight-chain or branched divalent C1 to C6 alkyl or -R3-O-R4-, wherein R3 and R4 are each independently a direct bond or a straight-chain or branched divalent C2 to C6 alkyl, provided that R3 and R4 are not both direct bonds; R2 is a substituted or unsubstituted straight-chain or branched C2 to C8 alkenyl, -R5-OC(=O)-R6, -R5-C(=O)-O-R6, or -R5-O-R6, wherein R5 is a substituted or unsubstituted straight-chain or branched divalent C1 to C5 alkyl, and R6 is a substituted or unsubstituted straight-chain or branched C2 to C8 alkenyl.

2. The cyclic olefin copolymer as described in claim 1, wherein, In formula (II), R1 is a straight-chain divalent C1 to C6 alkyl or -R3-O-R4-, wherein R3 and R4 are each independently a direct bond or a straight-chain divalent C2 to C6 alkyl, provided that R3 and R4 are not both direct bonds.

3. The cyclic olefin copolymer as described in claim 1, wherein, In formula (II), R2 is an unsubstituted straight-chain C2 to C8 alkenyl, -R5-OC(=O)-R6, -R5-C(=O)-O-R6, or -R5-O-R6, wherein R5 is an unsubstituted straight-chain divalent C1 to C5 alkyl, and R6 is an unsubstituted straight-chain C2 to C8 alkenyl.

4. The cyclic olefin copolymer as claimed in claim 1, wherein the repeating unit (A-2) is derived from a cyclic olefin monomer selected from the group consisting of: , ...

5. The cyclic olefin copolymer as described in any one of claims 1 to 4, wherein the content of repeating unit (A-2) is 10 mol% to 20 mol% based on the total number of mol% of repeating unit (A-1) and repeating unit (A-2).

6. A resin composition comprising: (A) a cyclic olefin copolymer as described in any one of claims 1 to 5; and (B) a crosslinking agent.

7. The resin composition as claimed in claim 6, wherein the content of the cyclic olefin copolymer (A) is 50% to 65% by weight, based on the total weight of the resin composition excluding solvent.

8. The resin composition as claimed in claim 6 or 7, wherein the crosslinking agent (B) is selected from the group consisting of: polyfunctional allyl compounds, polyfunctional acrylate compounds, polyfunctional acrylamide compounds, and polyfunctional styrene compounds.

9. The resin composition as claimed in claim 6 or 7, wherein the crosslinking agent (B) is present in an amount of 1% to 5% by weight, based on the total weight of the resin composition excluding solvent.

10. A prepreg, which is prepared by impregnating or coating a substrate with a resin composition as described in any one of claims 6 to 9 and drying the impregnated or coated substrate.

11. A metal foil laminate, which is made by laminating a prepreg as described in claim 10 with a metal foil, or by coating a resin composition as described in any one of claims 6 to 9 onto a metal foil and drying the coated metal foil.

12. A printed circuit board made of a metal foil laminate as described in claim 11.