摘要:
A method for inhibiting corrosion of a metal surface bearing a corrosion product including ferrous ions is disclosed. The method comprises applying to the surface a reaction product of an alcohol and a fatty acid maleic anhydride adduct produced by a reaction between maleic anhydride and an unsaturated fatty acid. Related compositions and coated metal surfaces are also disclosed.
摘要:
A rapidly curable fluorocopolymer comprises (a) 40 to 60 mole % of fluoroolefin units, (b) 8 to 60 mole % of the monovinyl ether of cyclohexanedimethanol units and (c) 5 to 45 mole % of alkyl vinyl ether units, wherein the mole % of a =b +c. The vinyl ether group provides an enhanced polymer Tg and a primary hydroxy site in the backbone of the polymer for effective and rapid crosslinking upon curing with isocyanates. The presence of (b) +(c) in substantially equimolar amounts with (a) provides coatings having the desired hardness without brittleness, and in suitable ratio for reaction copolymerization with (a).
摘要翻译:快速固化的含氟共聚物包含(a)40-60摩尔%的氟烯烃单元,(b)8至60摩尔%的环己烷二甲醇单元的单乙烯基醚和(c)5至45摩尔%的烷基乙烯基醚单元, %a = b + c。 乙烯基醚基团在聚合物主链中提供增强的聚合物Tg和主要羟基位点,用于在用异氰酸酯固化时有效且快速的交联。 (b)+(c)与(a)基本上等摩尔量的存在提供了具有所需硬度而不脆性的涂层,并且与(a)的反应共聚合的合适比例。
摘要:
A method is disclosed for volatile inhibition and transport of inhibitor in the volatile phase to produced liquids of corrosion in a gas lift process in which a lift gas is pumped into a well to facilitate petroleum production of the well. The method comprises introducing to the lift gas a corrosion-inhibiting amount of a dihydrothiazole of the formula ##STR1## wherein R, R', R", R'", and R.sup.4 are independently selected from among hydrogen and alkyl groups of up to about 3 carbon atoms, provided that the total number of carbon atoms of R, R', R", R'" does not exceed about 14.
摘要:
A system for removing an interleaf sheet contacting a plate sheet used in an imaging system, comprised of a substantially horizontal member; an assembly comprising at least two elements configured to directly contact and pick up the interleaf sheet, a portion of said assembly connected to said member; a motor configured to move said member in a direction substantially perpendicular to a surface of the interleaf sheet as positioned prior to contact; and a first sensor system that generates a signal indicating when said member is a first predetermined distance from the interleaf sheet; and a second sensor system comprised of a second sensor that generates a signal indicating that the sheet beneath the second sensor is an interleaf sheet; said motor utilizing the first predetermined distance to move said member a second predetermined distance from the interleaf sheet, the at least two elements not contacting each other at the second predetermined distance, said motor moving said member in a direction toward the first predetermined distance to a position where at least a portion of the interleaf sheet is interposed between the at least two elements.
摘要:
A process for polymerizing a vinyl ether monomer which comprises contacting the vinyl ether with an initiator system of silicon dioxide and a one or more metallic oxides.
摘要:
A method for inhibiting corrosion of a metal surface bearing a corrosion product including ferrous ions is disclosed. The method comprises applying to the surface a salt of an ethoxylated amine and a reaction product of an alcohol and a fatty acid maleic anhydride adduct produced by a reaction between maleic anhydride and an unsaturated fatty acid. Related compositions are also disclosed.
摘要:
This invention relates to coating compositions containing the alk-1-enyl ether reaction product of a hydroxylated compound, an alk-1-enyloxy oxirane and from 0 to 95% of an alkyl epoxide.
摘要:
This invention relates to epoxy vinyl ethers having the formula: ##STR1## wherein R is a polyvalent linear, branched or cyclic hydrocarbon radical having from 2 to 20 carbon atoms, optionally substituted with alkyleneoxy; n has a value of from 1 to 20; p has a value of from 1 to 6; and at least one of Y and Y' is ##STR2## while any remaining Y and Y' can be ##STR3## The invention also relates to the synthesis and uses of the above polyphenyl vinyl ethers.
摘要:
This invention relates to a radiation curable crosslinkable composition containing (a) from about 0.1 to about 5 wt. % of an initiator containing at least 25% cationic initiator, (b) from about 0 to about 60 wt. % of a polymerizable vinyl ether, epoxide, vinyloxy alkyl urethane or acrylate and (c) from about 35 to about 99.9% wt. % of a polyfunctional alkenyl ether having the formulaA[(CH.sub.2 O).sub.m (Z).sub.r CH.dbd.CHR].sub.nwherein A is a carbon atom, --OCH.dbd.CHR or [C.sub.1 to C.sub.10 alkyl].sub.4-n ; R is C.sub.1 to C.sub.6 alkyl; Z is C.sub.2 to C.sub.8 alkyleneoxy; r has a value of from 0 to 6; m has a value of from 0 to 1 and at least one of r and m has a positive value; n has a value of from 1 to 4, with the proviso that m is 0 and n is one when A is --OCH.dbd.CHR, n has a value of 2 or 3 when A is [C.sub.1 to C.sub.10 alkyl].sub.4-n and n has a value of 4 when A is carbon. The invention also relates to the process of curing said composition and to a cured film on a substrate coated with the above composition.