摘要:
A coating composition comprising (A) a urethane polymer having at least one aliphatic unsaturated hydrocarbon group on a side chain in a molecule, (B) an organohydrogenpolysiloxane having at least two hydrosilyl groups in a molecule, and (C) a hydrosilylation catalyst firmly bonds to surfaces of various substrates, especially silicone rubber substrates, without a need for pre-treatment and readily forms thereon a surface protective layer having wear resistance. A silicone rubber member in which a silicone rubber substrate is coated on its surface with the inventive coating composition is endowed on the surface with wear resistance and is useful as silicone rubber key pads and silicone rubber rolls.
摘要:
The present invention provides polydiorganosiloxane oligourea segmented copolymers. The copolymers contain soft polydiorganosiloxane units, hard segments that are diisocyanate residues, the polydiorganosiloxane units and diisocyanate residues being connected by urea linkages, and terminal groups that are nonreactive, reactive under free radical or moisture cure conditions, or amines. The invention also provides methods of preparing the copolymers.
摘要:
Adhesive film useful for the production of semiconductor devices is produced from a siloxane-modified polyamideimide resin composition, comprising 100 parts by weight of a siloxane-modified polyamideimide resin and 1 to 200 parts by weight of a thermosetting resin ingredient.
摘要:
Alcohol-soluble, aromatic heterocyclic copolymers having repeating units of the formula: ##STR1## wherein x has a value of 0.10 to 0.90 and y has a value of 1.0-x. These copolymers are useful in the preparation of organic/inorganic hybrid materials having transparency which comprise the sol-gel derived, hydrolytically condensed reaction product of a metal alkoxide of the formula M(OR).sub.w wherein R is a lower alkyl group, M is Si, Ti, Al or a mixture thereof, and w is the valence value of M, and the above copolymer.
摘要:
An aminosiloxane ester copolymer, an emulsion containing the copolymer, and processes for making the copolymer and the emulsion are provided. The copolymer and the emulsion may be formulated into hair care compositions, such as conditioners and styling products.
摘要:
A temporary high-temperature-resistant dispersing agent, and a preparation and a use method thereof. The temporary high-temperature-resistant dispersing agent is a block high-molecular polymer prepared by a one-step reaction from polysiloxane containing an amino group. The prepared block high-molecular polymer may be directly used as a dispersant; the block high-molecular polymer may also be used as a basic formula and used as the dispersant after other auxiliary compositions are added; and the block high-molecular polymer may also be used in combination with one or more other dispersion auxiliaries and/or surfactants to meet dispersion requirements in various special occasions.
摘要:
The subject of the present invention is the use of a porous or non-porous organosilicon material for eliminating radionuclides, mineral anions, anionic molecular entities and negatively charged dyes or active principles from an aqueous solution, characterized in that the structure of said organosilicon material is formed of repeat units, each repeat unit comprising at least one positively charged entity selected from an ammonium entity, an imidazolium entity, a guanidinium entity, a pyridinium entity and a phosphonium entity and being incorporated into a silicon network by at least two silicon-carbon bonds. The invention also relates to a specific novel organosilicon material, comprising at least one benzyl group, one 4-phenylbenzyl group or one styrene group in each repeat unit.
摘要:
Described herein are silicon based conjugates capable of delivering one or more payload moieties to a target cell or tissue. Contemplated conjugates may include a silicon-heteroatom core, one or more optional catalytic moieties, a targeting moiety that permits accumulation of the conjugate within a target cell or tissue, one or more payload moieties (e.g., a therapeutic agent or imaging agent), and two or more non-interfering moieties covalently bound to the silicon-heteroatom core.
摘要:
The preparation of poly-2-oxazoline amphiphilic polymers and copolymers is described. Self-assembled particles comprising these amphiphilic polymers and which are useful for the targeted delivery of therapeutic and diagnostic agents are also described.
摘要:
The present invention discloses a hybrid organic silicon thermoplastic elastomer and a preparation method thereof. The copolymer, namely the elastomer, has a structural formula as shown in formula I. In the preparation method, the preparation proceeds in a solution or main body polymerization system through organopolysiloxane with two functionalized ends, a compound with a structural formula of OCN—Y—NCO, a branched compound with a structural formula of and a compound with a structural formula of NH2—Z—NH2, which can be added or not. The softening temperature of the copolymer is in a range of 40° C.˜190° C., and the present invention has high processing mobility.