Polyimide composition and process for producing the same
AssigneeKaneka Corporation
InventorsKohji Okada, Hitoshi Nojiri
Life of this patent
Estimating the term…
Abstract
A polyimide represented by the following general formula (1); wherein l, m, and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule, E1 is a photosensitive group, E2 is a group comprising an alkyl group having 2 to 20 carbon atoms, —A(—E1)—, —A(—E2)—, and B each are a divalent organic group, X and Y each are a tetravalent organic group, X, Y, A, B, E1 and E2 may be identical or different among the repeating units, 1 is an integer of 1 or more, m and n each are an integer of 0 or more. The polyimide and polyimide compositions comprising it has thermoreactivity as well as photoreactivity and photosensitivity.
Claims14
A polyimide represented by the following general formula (1):
- wherein 1, m, and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule;
- and E1 a photosensitive group;
- E2 is a group comprising an alkyl group having 2 to 20 carbon atoms;
- —A(—E1)—, —A(—E2)—, and B represents a divalent organic group;
- X and Y each are a tetravalent organic group;
- and X, Y, A, B, E1 and E2 may be identical or different among their repeating units when any one of l, m and n is 2 or more, l is an integer of 1 or more, or m and n each are an integer of 0 or more.
A process for producing a polyimide, in which the polyimide represented by the general formula (1):
- wherein 1, m, and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule;
- and E1 is a photosensitive group;
- E2 is a group comprising an alkyl group having 2 to 20 carbon atoms;
- —A(—E1)—, —A(—E2)—, and B each represent a divalent organic group;
- X and Y each are a tetravalent organic group;
- and X, Y, A, B, E1 and E2 may be identical or different among their repeating units when any one of 1, m and n is 2 or more, 1 is an integer of 1 or more, or m and n each are an integer of 0 or more is obtained by,
- synthesizing a copolymer of the following general formula (2)
- where m and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule, and X and Y each are a tetravalent organic group, A′ is a divalent organic group comprising at least one hydroxyl group, B is a divalent organic group, X and Y may be identical or different among the repeating units when m is 2 or more, m is an integer of 1 or more, n is an integer of 0 or more;
- and
- subsequently introducing photosensitive groups and/or groups containing an alkyl group having 2 to 20 carbon atoms.
A process for producing a polyimide, in which the polyimide represented by the general formula (1)
- wherein l, m, and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule;
- and E1 is a photosensitive group;
- E2 is a group comprising an alkyl group having 2 to 20 carbon atoms;
- —A(—E1)—, —A(—E2)—, and B each represent a divalent organic group;
- X and Y each are a tetravalent organic group;
- and X, Y, A, B, E1 and E2 may be identical or different among their repealing units when any one of 1, m and n is 2 or more, 1 is an integer of 1 or more, or m and n each are an integer of 0 or more is synthesized by reacting a diamine, to which a photosensitive group is introduced, with an acid dianhydride.
A process for producing a polyimide, in which the polyimide represented by the general formula (1)
- wherein l, m, and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule;
- and E1 is a photosensitive group;
- E2 is a group comprising an alkyl group having 2 to 20 carbon atoms;
- —A(—E1)—, —A(—E2)—, and B each represent a divalent organic group;
- X and Y each are a tetravalent organic group;
- and X, Y, A, B, E1 and E2 may be identical or different among their repeating units when any one of 1, m and n is 2 or more, 1 is an integer of 1 or more, or m and n each are an integer of 0 or more is synthesized by reacting a diamine, to which a photosensitive group is introduced, and a diamine, to which a group containing an alkyl group having 2 to 20 carbon atoms is introduced, with an acid dianhydride.
Dependencies are inferred from the claim text.