摘要:
The present invention relates to a dispersion comprising (A) a carrier fluid in an amount from 35 to 95 wt.%, the carrier fluid comprising: (A1) water, and (A2) at least one compound selected from the group consisting of ethanol, 1-propanol, 2-propanol, ethyl acetate, n-propyl acetate, isopropyl acetate, acetone, methyl ethyl ketone and any mixture of at least two of these compounds, whereby the amount of water (A1) relative to the carrier fluid (A) is less than 85 wt.% and the amount of water relative to the dispersion is from 1 to 30 wt.%; and (B) polymer(s) in an amount from 5 to 65 wt.%, the polymer(s) comprising: (B1) polymeric particles having a volume average particle size from 1μm to 20μm, whereby the polymer of the polymeric particles (B1) has a weight average molecular weight of at least 100 kDaltons and whereby the polymer of the polymeric particles (B1) is selected from the group consisting of polyurethane, polyurethane-polyacrylate hybrid and any mixture thereof; and whereby the amounts of (A) and (B) are given relative to the total amount of (A) and (B).
摘要:
The invention provides polymers comprising repeating units derived from at least one monomer comprising at least one functionalized or unfunctionalized acryloyl moiety and at least one lactam moiety; at least one monomer comprising at least one sulfonic acid moiety or a salt thereof; and at least one crosslinker. The invention further provides various compositions comprising the polymers. The invention furthermore provides applications of these compositions in various industrial arts, particularly in oilfield operations such as drilling and cementing.
摘要:
Beschrieben werden wässrige Polymerdispersionen für die Verbundfolienkaschierung enthaltend ein dispergiertes Polymer und ein gelöstes Polymer, sowie ein mehrstufiges Verfahren zu deren Herstellung aus ethylenisch ungesättigten, radikalisch polymerisierbaren Monomeren. In einer ersten Stufe wird durch radikalische Emulsionspolymerisation ein erstes Polymerisat hergestellt. In einer zweiten Stufe wird eine wässrige Polymerdispersion in Gegenwart des ersten Polymerisats hergestellt. Die Monomeren der ersten Stufe umfassen Monomere mit Säuregruppen. Das gelöste Polymer umfasst Monomere mit Oxazolingruppen sowie wasserlösliche Monomere. Die wässrigen Polymerdispersionen können als Klebstoff für die Herstellung von Verbundfolien verwendet werden.
摘要:
The present invention relates to an aqueous dispersion comprising (i) dispersed particles of vinyl polymer having a volume average particle size diameter (D50) of from 1 to 30 μm (microns); (ii) a partially hydrolysed vinyl acetate (co)polymer in an amount of from 2% to 30% by weight, relative to the total amount of monomers used to prepare the vinyl polymer(s) of the dispersed polymeric particles; and (iii) decomposition products of an oil-soluble organic initiator; wherein at least 95 wt.% of the partially hydrolysed vinyl acetate (co)polymer that is present in the aqueous dispersion has a weight average molecular weight M w from 25 to 500 kDalton and a hydrolysis degree of from 70 to 95 mol%.
摘要:
A superhydrophobic non-fluorinated composition includes a hydrophobic matrix component free of fluorine, a hydrophilic filler particles, wherein the filler particles are metal oxide nanoparticles, and water, wherein the hydrophobic component is in an aqueous dispersion. Also, a superhydrophobic non-fluorinated composition includes a hydrophobic polymer free of fluorine, a titanium dioxide nanoparticle filler particle, and water. In addition, a superhydrophobic non-fluorinated composition includes a hydrophobic polymer free of fluorine, wherein the hydrophobic polymer includes a polyolefin, titanium dioxide nanoparticles as filler, wherein the titanium dioxide nanoparticles are rutile titanium dioxide, anatase titanium dioxide, or a mixture of rutile and anatase titanium dioxide, and water.
摘要:
La présente invention se rapporte à un liant aqueux pour fibres minérales, notamment de verre, qui comprend - au moins un lignosuifonate d'ammonium ou un sel de métal alcalin ou alcalino-terreux d'acide lignosulfonique, et - au moins un composé carbonylé de formule R - [C(O)R 1 ] x (I) dans laquelle : - R représente un radical hydrocarboné, linéaire, ramifié ou cyclique, saturé ou insaturé, un radical renfermant un ou plusieurs noyaux aromatiques constitués de 5 ou 6 atomes de carbone, un radical renfermant un ou plusieurs hétérocycies aromatiques contenant 4 ou 5 atomes de carbone et un atome d'oxygène, d'azote ou de soufre, le radical R pouvant contenir d'autres groupements fonctionnels, notamment hydroxyle ou alkoxy, en particulier méthoxy, - R 1 représente un atome d'hydrogène ou un radical alkyle en C 1 -C 10 , et - x varie 1 à 10, ledit liant étant exempt de sucre hydrogéné et de mélamine. Elle a également pour objet les produits fibreux se présentant sous la forme de mats de fibres minérales.
摘要:
L'invention se rapporte au domaine des copolymères à blocs, particulièrement au domaine des copolymères hydrosolubles ou hydrodispersibles consistant en deux blocs dont le bloc majoritaire est un bloc thermoplastique hydrophile. Plus particulièrement, l'invention concerne un copolymère à blocs consistant en un bloc élastomérique, partiellement ou totalement hydrophile, ayant une Tg inférieure à 30°C et comprenant au moins un monomère hydrophile, et un bloc thermoplastique hydrosoluble ayant une Tg supérieure à 30°C et comprenant au moins un monomère ayant un groupe carboxyle, ledit copolymère étant partiellement ou totalement soluble dans l'eau ou en milieu aqueux, et la proportion massique du bloc thermoplastique étant supérieure à 50% du poids dudit copolymère.
摘要:
This invention provides for a composition particularly useful in a method comprising applying the composition to a surface to be lubricated, said composition comprising: at least one polymer (P) comprising a partially or fully fluorinated, straight or branched, polyoxyalkylene chain (R f ) having two chain ends, wherein one or both chain end(s) bear(s) a hydroxy-, alkoxy- or acyloxy- terminated polyoxyalkylene chain free from fluorine atoms (R a ), said chain comprising from 4 to 50 fluorine-free oxyalkylene units, said units being the same or different from one another and being selected from -CH 2 CH 2 O- and -CH 2 CH(J)O-, wherein J is independently straight or branched alkyl or aryl, preferably methyl, ethyl or phenyl and water.
摘要:
An object of the present invention is to provide a pressure-sensitive adhesive having excellent adhesive property, facilitating secondary processing of an adhesive product and providing an adhesive product with excellent holding strength to a substrate and adhesion property to a curved surface. The present invention relates to a water-based composition comprising: (A) an aqueous resin emulsion comprising a polymer having a glass transition temperature of -65 to - 40 °C and (B) an aqueous resin emulsion comprising a polymer having a glass transition temperature of 20 °C or more, wherein the aqueous resin emulsion has a minimum film-forming temperature of 40°C or more.