Modified copolymer, method for preparing the same, and method for preparing paste
AssigneeIndustrial Technology Research Institute
InventorsShou-Yi Ho, Kuo-Chan Chiou
Life of this patent
Estimating the term…
Abstract
A modified copolymer is provided. The modified copolymer includes a random copolymer of a repeat unit of formula (I) and a repeat unit of formula (II) wherein M is derived from monomers with double bonds, R is a direct bond or an aliphatic hydrocarbon chain group having 1 to 12 carbon atoms, a cyclic aliphatic hydrocarbon group having 3 to 16 carbon atoms, an alkylcarbonyloxy group having 2 to 6 carbon atoms, a carbonyl group, an ether group, an ester group, an amide group, an aromatic group having 6 to 16 carbon atoms, or a divalent group having any of the above groups, wherein m and x are positive integers less than 50. The weight average molecular weight of the modified copolymer is between 3000 and 30000.
Claims25
A modified copolymer, which is a random copolymer comprising a repeat unit of Formula (I) and a repeat unit of Formula (II)
- wherein M is derived from monomers with double bonds, R is a direct bond or an aliphatic hydrocarbon chain group having 1 to 12 carbon atoms, a cyclic aliphatic hydrocarbon group having 3 to 16 carbon atoms, an alkylcarbonyloxy group having 2 to 6 carbon atoms, a carbonyl group, an ether group, an ester group, an amide group, an aromatic group having 6 to 16 carbon atoms, or a divalent group having any of the above groups, m and x are positive integers less than 50, and the modified copolymer has a weight average molecular weight between 3000 and 30000.
A method for preparing a modified copolymer, comprising:
- mixing a copolymer of Formula (V), a monomer having a double bond, an initiator, and a solvent to form a prepolymer;
- and
- irradiating the prepolymer with an ultraviolet light to undergo a grafting reaction, wherein the weight ratio of the copolymer of Formula (V) to the monomer is from 6:1 to 1:6,
- wherein a is a positive integer less than 50, b is an integer from 5 to 25, R is a direct bond or an aliphatic hydrocarbon chain group having 1 to 12 carbon atoms, a cyclic aliphatic hydrocarbon group having 3 to 16 carbon atoms, an alkylcarbonyloxy group having 2 to 6 carbon atoms, a carbonyl group, an ether group, an ester group, an amide group, an aromatic group having 6 to 16 carbon atoms, or a divalent group having any of the above groups, and the copolymer of formula (V) has a weight average molecular weight between 2000 and 6000.
Dependencies are inferred from the claim text.