摘要:
An article capable of repeatedly releasing ice from its surface is provided. Also provided is a composition capable of providing such release. The article and composition employ a polysiloxane having terminal ethylenic unsaturation, a polyhydrosiloxane, a platinum- or other metal-containing hydrosilation catalyst, and optionally, a non-functional polysiloxane free from ethylenic unsaturation. When applied to a surface and crosslinked, the article has a coating having a coating weight of at least 3 g/m.sup.2.
摘要:
An adhesive composition includes 5 to 40% wt polyvinylpyrrolidone; 3 to 20% wt alkanoate blend including a first Cn carboxylic acid salt and a second Cm carboxylic acid salt, where n and m are integers in a range from 12 to 22; 20 to 60% wt of a water-soluble or water-dispersable solid material; 0.5 to 30 wt % of a liquid polyhydric alcohol; and 15 to 60% wt water. The adhesive composition can be clear and in glue stick form.
摘要:
An adhesive composition includes a polymer adhesive material and a thickener. The adhesive composition has a stringing length of 9 cm or less and a phase lag of 45 degrees or less or a sag distance of 5 mm or less. The adhesive can be formed by combining a vinyl acetate polymer, an alkali swellable thickener, an alkali material, and water.
摘要:
A pressure sensitive adhesive composition is described, comprising the reaction product of a copolymer and a bisamide crosslinking agent, (A) the copolymer comprising the reaction product of (i) a (meth)acrylate ester of a non-tertiary alcohol in which the alkyl group contains between 1 and 4 carbon atoms, inclusive, and (ii) a carboxylic acid-functional, ethylenically unsaturated co-monomer, and (B) a bisamide crosslinking agent having the formula: where, R1 and R3 independently, are selected from the group consisting of H and CnH2n+1, n is an integer ranging from 1 to 5, R2 is a divalent radical selected from the group consisting of benzeno (—C6H4—), substituted benzeno, triazine, CmH2m, and combinations thereof, m is an integer ranging from 1 to 10, and the relative amounts of the carboxylic acid-functional, ethylenically unsaturated co-monomer and the bisamide crosslinking agent providing a ratio of the number of equivalents of amide groups to the number of equivalents of carboxylic acid groups of less than about 0.1. Articles made with the pressure sensitive adhesive composition and methods for its use are also described.
摘要翻译:描述了包含共聚物和双酰胺交联剂的反应产物的压敏粘合剂组合物,(A)包含(i)非叔醇的(甲基)丙烯酸酯的反应产物的共聚物,其中烷基 基团含有1至4个碳原子,包括端基和(ii)羧酸官能的烯属不饱和共聚单体,和(B)具有下式的双酰胺交联剂:其中R 1, 和R 3独立地选自H和C n H 2n + 1,n是1至 5,R 2是选自苯并(C 6 -C 15 - ),取代的苯并,三嗪, C m 2 H 2 m及其组合,m为1至10的整数,并且羧酸官能的烯键式不饱和共聚单体和 双酰胺交联剂提供 将酰胺基的当量数与羧酸基的当量数之比小于约0.1。 还描述了用压敏粘合剂组合物制成的制品及其使用方法。
摘要:
A curable coating composition comprising an ethylenically unsaturated organopolysiloxane base polymer, an organohydrogenpolysiloxane crosslinking agent, an effective amount of a precious metal containing hydrosilylation catalyst, and from 0.1 to 20 weight percent of a higher alkenyl-functional organopolysiloxane gum. The incorporation of the gum provides a composition which cures rapidly to a low coefficient of friction coating having stable release over time.
摘要:
Pressure-sensitive adhesive tape having low adhesion backsizes and release coatings that can be written on with solvent and water-based inks, the indicia remaining firmly bonded and resisting smearing. The coatings comprise copolymers of (A) free radically polymerizable vinyl monomer, (B) polar monomer in sufficient amount to impart a hydrated Tg of -15.degree. C. to 35.degree. C. and a difference of at least 20.degree. C. between the hydrated and actual Tgs, and (C) siloxane-based polymer of a type and in an amount that will impart a satisfactory release value.
摘要:
An adhesive composition includes 5 to 40% wt polyvinylpyrrolidone; 3 to 20% wt alkanoate blend including a first Cn carboxylic acid salt and a second Cm carboxylic acid salt, where n and m are integers in a range from 12 to 22; 20 to 60% wt of a water-soluble or water-dispersable solid material; 0.5 to 30 wt % of a liquid polyhydric alcohol; and 15 to 60% wt water. The adhesive composition can be clear and in glue stick form.
摘要:
An adhesive article comprising a fluorothermoplastic film having a major surface; and a pressure sensitive adhesive layer adhered to at least a portion of the first major surface, wherein the pressure sensitive adhesive comprises a silicone polyurea block copolymer and an MQ tackifying resin. Composite articles preparable from the adhesive articles, and methods of making the same are also disclosed.
摘要:
Pressure sensitive adhesives and methods wherein the pressure sensitive adhesives include a silicone tackifying resin having no greater than about 1.5 wt-% Si—OH functional groups and a polydiorganosiloxane polyurea copolymer.
摘要:
Curable, solventless, liquid polyorganosiloxane compositions provide release coatings that exhibit a slippery feel. The composition comprises (a) a first polydiorganosiloxane terminated by silyl groups having one reactive group; (b) a second polydiorganosiloxane terminated by silyl groups having one reactive group, the reactive group of (a) being the same or different from the reactive group of (b), said reactive groups of (a) and (b) being reactive with one another to form a covalent bond; (c) a polydiorganosiloxane having three or more reactive groups that are reactive with either the reactive group of (a) or the reactive group of (b) or both to form a covalent bond; and (d) a catalyst for effecting the reaction of the reactive groups of (a), (b), and (c) to form covalent bonds. When coated on a substrate and cured, the composition provides release liners for pressure-sensitive adhesive tapes and pressure-sensitive adhesive transfer tapes.