Abstract:
What is provided herein is a water-based, environmentally safe, stain-remover composition for effectively removing a wide variety of stains from fabrics consisting essentially of: (a) 5-20 % by weight N-methylpyrrolidone (NMP), (b) 5-20 % by weight α-butyrolactone (BLO), (c) 40-88 % by weight water, and (d) 1-10 % by weight surfactant, and, optionally, including a base-buffer to provide a pH in the range of about 7-11.
Abstract:
Vapor phase catalytic hydrogenation of maleic anhydride to gamma-butyrolactone is achieved in a conversion of 95 % or more and a selectivity of 80 % or more during a prolonged period of production. The process of the invention uses an activated catalyst prepared by reducing a catalyst composition comprising 30-65 % by weight of CuO, 18-50 % by weight of ZnO and 8-22 % by weight of Al2O3, and, particularly, by activating the reduced catalyst composition in hydrogen at an activation temperature of at least 400 DEG C, preferably 400 DEG C to 525 DEG C, and optimally about 425 DEG C. The hydrogenation process is carried out under predetermined and advantageous process conditions, including a defined molar ratio of hydrogen to maleic anhydride in the vapor reactant stream, a selected pressure during hydrogenation, an advantageous feed rate space velocity, a predetermined contact time, and a suitable reaction temperature.
Abstract translation:在长时间的生产过程中,将马来酸酐与γ-丁内酯的气相催化氢化达到95%以上的转化率和80%以上的选择性。 本发明的方法使用通过还原包含30-65重量%CuO,18-50重量%ZnO和8-22重量%Al 2 O 3的催化剂组合物制备的活化催化剂,特别是通过将 在氢气中活化温度为至少400℃,优选400℃至525℃,最优约425℃的氢气中的催化剂组成降低。氢化过程在预定和有利的工艺条件下进行,包括确定的摩尔比 在氢气中选择的压力,有利的进料速率空间速度,预定的接触时间和合适的反应温度。
Abstract:
The invention relates to alk-1-enyl ether silicates having the formula (I): [X]4-nSi[OR1OCH=CH-R2]n, and a process for making same, wherein X is halogen or -OR wherein R is lower alkyl or a mixture of halogen and OR, a mixture of OR and hydrogen or a mixture of halogen and hydrogen; R1 contains from 1 to 8 carbon atoms and is alkylene, alkenylene, alkynylene, optionally alkoxylated with up to 20 units of alpha , wherein Y is hydrogen or methyl and R2 is each hydrogen or lower alkyl and n has a value of from 1 to 4; and polyfunctional alkenyl ether having the formula (II): A[(CH2O)m(Z)rCH=CHR]n, wherein A is a carbon atom, -OCH=CHR or [C1 to C10 alkyl]4-n; R is C1 to C6 alkyl; Z is C2 to C8 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=CHR, n has a value of 2 or 3 when A is [C1 to C10 alkyl]4-n and n has a value of 4 when A is carbon. This invention also relates to a radiation curable cross linkable compositions containing (a) from about 0.1 to about 5 wt. % of an initiator containing at least 25 % cationic intiator, (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 an ether of formula (II).
Abstract:
Alkenyl ether carbonates having formula (A) wherein A is RHC=CHO(B)n-, lower alkyl or a mixture thereof; B is (a) divalent radical having from 2 to 12 carbon atoms and is selected from the group of alkylene, mono or polyalkoxylated alkylene, alkenylene, alkynylene, arylene, alkarylene and aralkylene radicals, which radicals are optionally substituted with halo, alkyl, cyano, nitro or alkoxy; R is hydrogen or lower alkyl and n is from 1 to 10. These are provided alkenyl ether polycarbonate, a polymerizable compound formed from reaction of a dialkenyl ether monocarbonate and a polyhydroxy alcohol having at least three hydroxy groups, a polymerizable compound formed from the reaction of a hydroxylated polymeric polyether, polyurethane, polycarbonate, polyester of an alkanedioic acid or polybutadiene and a dialkenyloxy carbonate co-reactant, and polyaryloxypolyvinyl ethers. The polymerized compounds are intermediates for hard abrasion resistant films and coatings. The monomers and oligomers are intermediates for hydrogels or photoresist materials.
Abstract:
This invention relates to an improved process for producing a clear solution of vinylpyrrolidone (VP) and vinyl acetate (VA) monomers which comprises, in an anhydrous system, (a) reacting a C2 to C3 alcoholic solution containing said VA monomer and between about 60 and about 80 wt.% portion of total VP monomer in the presence of between about 0.05 and about 0.3 wt.% of a free radical initiator selected from the group consisting of tert-amylperoxy pivalate and 2,2-azobis(2-methylbutyronitrile) or a mixture thereof for a period of from about 5 to about 10 hours, at a temperature between about 60 and about 110 DEG C; (b) gradually adding the remaining VP monomer in C2 to C3 alcohol solution at reaction temperature after the addition of the VA monomer is complete; (c) raising the temperature of the resulting reaction mixture to between about 110 and about 150 DEG C; (d) continuing the polymerization reaction at said higher temperature in the presence of from about 0.11 to about 0.6 wt.%, based on total monomers, of 2,5-dimethyl-2,5-bis(tert-butylperoxy) hexane and (e) cooling the resulting reaction mixture and recovering a homogeneous VP/VA copolymer C2 to C3 alcohol solution containing less than 100 ppm of residual vinylpyrrolidone monomer or vinyl acetate residual monomer.
Abstract:
This invention relates to a coating composition which can be cured by exposure to radiation energy in the presence of a cationic photoinitiator. The composition comprises a mixture of between about 1 and about 75 wt. % of a reactive vinyl or alk-1-enyl ether cyclocarbonate having formula (I) wherein R is hydrogen or lower alkyl; R' is C2 to C4 alkylene; n has a value of from 0 to 4 and n' has a value of from 1 to 4 and between about 99 and about 25 wt. % of a polymerizable compound containing an onium salt initiator which is normally insoluble in said polymerizable compound or a mixture thereof. The invention also relates to the use of the composition as a protective coating on a substrate. Preferably, the cyclocarbonate is prepared by a two-stage liquid phase process wherein an alk-2-enyl glycidyl ether having formula (II) wherein R is hydrogen or lower alkyl; R' is C2 to C4 alkylene, n has a value of from 1 to 4 and n' has a value of from 0 to 4, is catalytically isomerized to the corresponding alk-1-enyl glycidyl ether in the first-stage of the reaction and the reaction mixture of the first-stage, containing the isomerization catalyst is then contacted with carbon dioxide in the presence of a phase transfer catalyst under a pressure ranging from atmospheric to about 400 psig in the second stage of the reaction.
Abstract:
A process for making high specific viscosity copolymers of maleic anhydride and an alkyl vinyl ether by copolymerizing maleic anhydride and an alkyl vinyl ether monomers in the presence of added acetylene.
Abstract:
A process for the production of PVP-H2O2 products in the form of free-flowing powders, or a free-standing, porous solid or foam, is described. To prepare free-flowing powders, a fluidized bed is maintained at a reaction temperature of about room temperature to 60 DEG C and is contacted with finely divided droplets of a 30 to 85 % by weigth aqueous H2O2 solution. Preferably the fluidized bed temperature is about 35 DEG -45 DEG C, a 5-70 % H2O2 solution is used, and the feed rate of introduction of the H2O2 solution is about 5-50 g/minute/kg PVP present. The PVP-H2O2 product preferably contains about 15-24 %, preferably 18-22 %, H2O2 (1:1 molar ratio) and less than about 5 % water.
Abstract translation:描述了以自由流动的粉末或独立的多孔固体或泡沫的形式生产PVP-H 2 O 2产物的方法。 为了制备自由流动的粉末,将流化床保持在约室温至60℃的反应温度,并通过重量百分比的H 2 O 2水溶液与30至85%的细分散液滴接触。 优选地,流化床温度为约35-45℃,使用5-70%H 2 O 2溶液,并且所述H 2 O 2溶液的引入速率为约5-50g /分钟/ kg存在的PVP。 PVP-H 2 O 2产物优选含有约15-24%,优选18-22%的H 2 O 2(1:1摩尔比)和小于约5%的水。
Abstract:
This invention relates to non-polymeric, asymmetrical, low freezing, high boiling, aliphatic compounds containing from 2 to 5 pyrrolidonyl rings and from 13 to 40 carbon atoms which melt below 0 DEG C and which boil above 300 DEG C at atmospheric pressure and to the synthesis and use of said liquid polypyrrolidonyl compounds.