Crosslinkable chemical formulation and composite semipermeable membrane made therewith
申请人:W.L. GORE & ASSOCIATES, INC.
公开号:EP0160473A2
公开(公告)日:1985-11-06
A composite semipermeable membrane comprises:
(a) a flexible film of microporous polytetrafluoroethylene or other hydrophobic material having a water vapour transmission rate in excess of 10,000 g/m2 · 24 hours, preferably above 100,000 g/m2 · 24 hours, and an advancing water contact angle exceeding 90 degrees, and
(b) a continuous, crosslinked amorphous hydrophilic layer preferably of polyoxyethylene polythioether penetrated to an extent into the face of the hydrophobic layer. The hydrophilic layer provides a composite membrane having a water vapour transmission rate of the complete ensemble comparable to or even exceeding that of the hydrophobic material alone, and simultaneously offering two mechanisms of separation; that imposed by the microporous hydrophobic material and that imposed by the hydrophilic layer, and as such is capable of numerous separation operations. The crosslinkable and crosslinked hydrophilic polyoxyethylene polythioether materials are new chemical formulations.
Carbodiimide-containing hardening type reactive particles, process for producing the same, and use of the same
申请人:NISSHINBO INDUSTRIES, INC.
公开号:EP1344795A2
公开(公告)日:2003-09-17
A hardening type reactive particles which contain a carbodiimide compound in such a way to have the reactive performance the carbodiimide group inherently has only in the surface layer section or both surface layer section and inside of the base particle, without deforming shape of the base particle. The hardening type reactive particles each comprising a base particle (A) of thermoplastic resin having a functional group and carbodiimide compound (B) impregnated only in the surface layer section or both surface layer section and inside of the base particle, wherein the base particle (A) and carbodiimide compound (B) are strong bonded to each other by the crosslinking reaction taking place under heating between the functional group in the former and carbodiimide group in the latter, and a process for producing the same.
COMPOSITE PARTICLE HAVING CARBODIIMIDE RESIN LAYER AND PROCESS FOR PRODUCING THE SAME
申请人:Nisshinbo Industries, Inc.
公开号:EP1528077A1
公开(公告)日:2005-05-04
A composite particle that can be easily converted to cured particle or half cured particle by the use of carbodiimide resin without changing of the configuration of matrix particle of, for example, a thermoplastic resin, excelling in mechanical and functional characteristics by virtue of the reaction capability inherently possessed by a carbodiimide group. In particular, a composite particle comprising matrix particle (A) having a functional group capable of reacting with a carbodiimide group and carbodiimide resin (B), characterized in that the functional group of the matrix particle (A) couples with the carbodiimide group of the carbodiimide resin (B) and that the composite particle is provided with an outer shell layer of carbodiimide resin (B) having an average thickness diameter (L), defined by the following formula [1], ranging from 0.01 to 20 µm : L = (L2 -L1) /2 [1] wherein L1 represents the average diameter of matrix particle, and L2 represents the average diameter of composite particle.
FLAKY PARTICLES AND PROCESS FOR PRODUCTION THEREOF
申请人:Nisshinbo Industries, Inc.
公开号:EP1553124A1
公开(公告)日:2005-07-13
Flaky particles which are produced through easy conversion from mother particles by using an organic compound other than monomers having double bonds as the hardening and crosslinking agent and to which at least one mechanical or functional characteristic selected from among reactivity, close adhesion, and tackiness is imparted by the presence of part of the unreacted reactive groups of the organic compound inside and on the particles; and a process for the production of the flaky particles. More specifically, flaky particles composed of mother particles (A) having functional groups and an organic compound (B) which has groups reactive with the functional groups of the particles (A) and is soluble in a solvent, characterized in that at least part of the functional groups of the mother particles (A) and at least part of the reactive groups of the organic compound (B) react with each other to form crosslinks.
FILLER FOR SUBSTRATE AND COMPOSITION FOR USE AS MATERIAL FOR INORGANIC/ORGANIC COMPOSITE SUBSTRATE FORMATION
申请人:Nisshinbo Industries, Inc.
公开号:EP1894967A1
公开(公告)日:2008-03-05
A filler for substrates which comprises an inorganic substance and a carbodiimide-group-containing organic layer chemically bonded to the surface of the inorganic substance. Examples of the carbodiimide-group-containing organic layer include a layer comprising a carbodiimide-group-containing compound represented by either of the following formulae. Due to the constitution, the filler for substrates can be highly dispersed in a resin for substrates even when added in a high proportion and can give a substrate inhibited from deteriorating in electrical properties, mechanical properties, etc. X1m-Z-A-R1-N=C=Nn-R1-NCO1 X1m-Z-A-R1-N=C=Nn-R1-A-Z-X231
[R1 represents a residue of an isocyanate compound; X1 and X2 each independently represents hydrogen, halogeno, etc.; Z's each independently represents silicon or titanium; A represents an organic group having a valence of 2 or higher containing a bond derived from an isocyanate group; m and 1 each is an integer of 1-3, provided that m+1=4; and n is an integer of 1-100.]