摘要:
Several spin finishes are disclosed for incorporation with synthetic organic polymer yarn or yarn products to render the same oil repellent and resistant to soiling. All of the spin finishes include a yarn finish composition which comprises (a) a nonhomogeneous mixture of a salt of dinonyl sulfosuccinate, a salt of dimethyl naphthalene sulfonate, and ammonium perfluoroalkyl carboxylate, and (b) a fluorochemical compound consisting of polycarboxybenzene esterified with certain partially fluorinated alcohols and with hydroxy-containing organic radicals such as 2-hydroxyethyl, glyceryl, and chlorohydryl or bromohydryl.
摘要:
This invention describes new perfluoroalkyl substituted esters, diesters and polyesters which contain at least one cyclic 5-membered anhydride group or two carboxy groups, as well as half amides and half esters thereof; their synthesis and their use as surface-active reactants in polycondensate resin systems.The anhydrides are synthesized by reaction of perfluoroalkyl substituted alcohols or diols with dianhydrides or an anhydrides-acid chloride and have the general structure ##STR1## wherein: Q is the tetra-radical rest of a tri- or tetracarboxylic acid, which contains at least one 1,2-dicarboxy grouping,X is hydrogen or COOH,R.sub.f is a perfluoroalkyl or perfluoroalkoxyperfluoroalkyl group of 4 to 18 carbon atoms,A is 1 or 2,A is hydrogen or ##STR2## wherein: M IS AN INTEGER FROM 0 TO 5, ANDR.sup.3 is the residue of a R.sub.f substituted alcohol or diol.
摘要:
Dry soil resistance and nonflame propagating characteristics are insured in textile fibers by applying thereto an aqueous dispersion containing a perfluoroalkyl ester of a carboxylic acid of from 3 to 30 carbon atoms. After the dispersion is applied, the fibers are dried at between 120.degree. to 170.degree. C.
摘要:
This invention relates to the production of partial cellulose esters with improved crease recovery through esterification of cellulose with unsaturated fatty acids in the presence of trifluoroacetic anhydride (TFAA) in benzene solution.
摘要:
Disclosed is a method for the production of three-dimensional silk products, wherein a three-dimensional silk product is treated with a silk solvent for a limited period of time so that a partial disintegration of the silk product is obtained whereafter the partially disintegrated silk product is re-stabilized with physical β-sheet induction by a re-stabilizing solution.
摘要:
An object of the present invention is to provide a compound which imparts a sufficient water repellency and a suitable oil repellency to substrates such as a fiber, a paper, a wood material, a hide, a leather, a resin, a glass, a metal, etc. The compound of the present invention is a fluoroalkylcarboxylic acid of the general formula (I), and its derivative of the general formula (II) (e.g. fluoroalkyl alcohol, fluoroalkyl carboxylic acid chloride, fluoroalkylcarboxylic acid amide and fluoroalkylamine). ##STR1##
摘要:
An object of the present invention is to provide a compound which imparts a sufficient water repellency and a suitable oil repellency to substrates such as a fiber, a paper, a wood material, a hide, a leather, a resin, a glass, a metal, etc. The compound of the present invention is a fluoroalkylcarboxylic acid of the general formula (I), and its derivative of the general formula (II) (e.g. fluoroalkyl alcohol, fluoroalkyl carboxylic acid chloride, fluoroalkylcarboxylic acid amide and fluoroalkylamine). ##STR1##
摘要:
Improved retention on yarn and processing properties have been discovered in a composition of matter comprising meta and para pyromellitates ##STR1## and 2 to 50 percent by weight of specific dimers of I. and II., wherein A is (CH.sub.2).sub.2 (CF.sub.2).sub.n CF.sub.3, where n is 5 to 13 and B is CH.sub.2 CHOHCH.sub.2 Cl.