Transport molecules include a dendrimer and a biologically active molecule. The dendrimer of such transport molecules includes at least one guanidine group, at least one protonated guanidine group, at least one protected guanidine group, at least one amidine group, at least one protonated amidine group, at least one protected amidine group, at least one ureido group, at least one protonated ureido group, at least one protected ureido group, at least one thioureido group, at least one protonated thioureido group, or at least one protected thioureido group. The biologically active molecule is bonded to the dendrimer. A method of increasing the bioavailability of a drug includes bonding the drug to a dendrimer of the invention.
Transport molecules include a dendrimer and a biologically active molecule. The dendrimer of such transport molecules includes at least one guanidine group, at least one protonated guanidine group, at least one protected guanidine group, at least one amidine group, at least one protonated amidine group, at least one protected amidine group, at least one ureido group, at least one protonated ureido group, at least one protected ureido group, at least one thioureido group, at least one protonated thioureido group, or at least one protected thioureido group. The biologically active molecule is bonded to the dendrimer. A method of increasing the bioavailability of a drug includes bonding the drug to a dendrimer of the invention.
POLYIMIDE PRECURSOR, POLYIMIDE, AND MATERIALS TO BE USED IN PRODUCING SAME
申请人:Takasawa Ryoichi
公开号:US20130178597A1
公开(公告)日:2013-07-11
Disclosed is a novel co-polyimide precursor for producing a polyimide having high transparency. The co-polyimide precursor comprises a unit structure represented by general Formula (A1) and a unit structure represented by general Formula (A2):
wherein, in general Formula (A1), R
1
represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R
2
and R
3
each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms,
wherein, in general Formula (A2), R
4
represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R
5
and R
6
each independently represent a hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms; and X represents a tetravalent group other than those represented by Formulae (A3):
The present invention has its object to provide a one-component type room temperature-curable composition having good storage stability, which comprises an epoxy resin and an organic polymer containing a reactive silicon group.
The present invention provides a curable composition comprising a polyepoxide having two or more oxirane rings in a molecule or a polyepoxide formed optionally by mixing, into the above-mentioned polyepoxide, monoepoxide having one oxirane ring per a molecule, a certain ketimine, and an organic polymer containing a reactive silicon group.