摘要:
This invention relates to an improved process for providing water repellency and stain resistance to a masonry surface wherein an aqueous based water repellant polymeric coating is applied thereto and the water removed leaving a water repellent polymeric film adhered to the masonry surface. The improvement in the process resides in the use of an aqueous emulsion of a semi-crystalline ethylene-vinyl acetate polymer formed by emulsion polymerization wherein the polymer has: (a) a crystalline melting point ranging from 35 to 110° C. measured at a heat rate of 20° C. per minute; and, (b) a tensile storage modulus of at least 1×105 dynes/cm2 at a temperature of 115° C. and measured at 6.28 rad/sec.
摘要:
The invention relates to an improvement in a process for imparting barrier properties to porous substrates, such as, concrete, masonry products, and wood products. The process comprises the steps of: applying an aqueous based sealing composition comprising a polymeric resin to said porous substrate, evaporating the water and forming a water repellent coating of said polymeric resin on said porous substrate. The improvement comprises: deriving the polymeric resin from an aqueous based polymer emulsion comprising a polymer comprised of emulsion polymerized units of vinyl acetate and ethylene, preferably with a carboxylic acid monomer, the polymer containing amorphous and crystalline ethylene segments and having: (a) a crystalline melting point (Tm) ranging from 35 to 110° C., preferably 50 to 100° C.; measured at a heat rate of 20° C./minute; and, (b) a tensile storage modulus of at least 1×105 dynes/cm2 at 115° C. measured at 6.28 rad/sec.
摘要:
This invention is directed to an improvement in cosmetic compositions comprised of a cosmetically acceptable carrier and a polymer. The improvement comprises a vinyl acetate-ethylene polymer formed by aqueous emulsion polymerization and having crystalline ethylene segments which imparts a thermal melt temperature, heat of fusion and tensile storage modulus to the polymer. The vinyl acetate-ethylene polymers have: a crystalline melting point (Tm) ranging from 35 to 110° C. measured at a heat rate of 20° C./minute and, a tensile storage modulus of at least 1×105 dynes/cm2 at 115° C. and measured at 6.28 rad/sec.
摘要翻译:本发明涉及由美容上可接受的载体和聚合物组成的化妆品组合物的改进。 该改进包括通过水乳液聚合形成的乙酸乙烯酯 - 乙烯聚合物,并具有将聚合物赋予热熔体温度,熔化热和拉伸储能模量的结晶乙烯部分。 乙酸乙烯酯 - 乙烯聚合物具有:以20℃/分钟的加热速率测量的在35至110℃范围内的结晶熔点(T m m),以及拉伸储存模量 在115℃下至少为1×10 5达因/ cm 2,并以6.28rad / sec测量。
摘要:
A process and an apparatus for removal of radon from indoor air. The process having the step of contacting indoor air with an adsorbent, that is a silver-exchanged zeolite. The apparatus for the removal of radon from indoor air comprises a silver exchanged zeolite.
摘要:
A process for forming sound absorbing laminates and the resulting laminate which comprises at least one layer of nonwoven fibers bonded to a substrate by a thermoplastic adhesive. The laminate is formed by placing a layer of bonded nonwoven fibers into contact with a substrate and bonding the layer of nonwoven fibers to the substrate. The improvement comprises: utilizing at least one layer of nonwoven fibers coated with an aqueous emulsion of a vinyl acetate-ethylene (VAE) adhesive and then dried. The VAE adhesive is prepared by aqueous emulsion polymerization, contains crystalline ethylene segments and has: (a) a crystalline melting point (Tm) ranging from 35 to 110° C., preferably 50 to 100° C.; measured at a heat rate of 20° C./minute; and, (b) a tensile storage modulus of at least 1×104 dynes/cm2 at 115° C. measured at a test frequency of 6.28 rad/sec.
摘要:
This invention relates to an improvement in a process for forming a carton from paperboard stock comprising the steps: applying an aqueous based adhesive to select parts of a paperboard carton blank obtained from a paperboard feedstock; drying the aqueous based adhesive; folding the select parts of the adhesive coated carton blank onto cooperating parts of the paperboard blank; and, heat sealing the select and cooperating parts thereby forming the carton; wherein the aqueous based adhesive is comprised of a vinyl acetate/ethylene polymer formed by emulsion polymerization and having (a) a crystalline melting point (Tm) ranging from 35 to 110° C., preferably 50 to 90° C.; measured at a heat rate of 20° C./minute and, (b) a tensile storage modulus of at least 1×104 dynes/cm2 at 115° C. measured at 6.28 rad/sec.
摘要翻译:本发明涉及一种用于从纸板坯料形成纸板的方法的改进,包括以下步骤:施加水性粘合剂以选择从纸板原料获得的纸板纸板坯的部分; 干燥含水基粘合剂; 将粘合剂涂布的纸板坯料的选择部分折叠到纸板坯料的协同部件上; 并且热封所选择的和配合的部件,从而形成纸箱; 其中所述水性基粘合剂由通过乳液聚合形成的乙酸乙烯酯/乙烯聚合物组成,并且具有(a)35至110℃的结晶熔点(T m m),优选50至 90°C。 在20℃/分钟的加热速率下测量,和(b)在115℃下测量至少1×10 4达因/ cm 2的拉伸储能模量 在6.28rad / sec。
摘要:
This invention relates to an improvement in spill resistant carpets wherein a spill resistant coating is applied to the underside of the carpet. The improvement for enhancing the spill resistance of the carpet comprises use of the following polymer as the spill resistant coating: an ethylene-vinyl acetate polymer comprised of crystalline ethylene segments prepared by the aqueous emulsion polymerization of ethylene and vinyl acetate in the presence of a stabilizing system, said ethylene-vinyl acetate polymer having a crystalline melting point ranging from 35 to 110° C. measured at a heat rate of 20° C. per minute; and, a tensile storage modulus of at least 1×105 dynes/cm2 at a temperature of 115° C. and measured at 6.28 rad/sec.
摘要:
A cellulosic product such as paper coating composition is disclosed comprising aqueous-based semi-crystalline vinyl acetate-ethylene polymer emulsions, containing crystalline ethylene segments, which are useful for imparting oil, grease, solvent, water, and moisture vapor resistance. The polymer emulsions are prepared via the direct aqueous-based free radical emulsion polymerization of ethylene with various other comonomers. The semi-crystalline aqueous-based polymer emulsions of this invention have a crystalline melting point and a crystalline heat of fusion ranging from 5 to 100 J/g. The semi-crystalline aqueous-based emulsion polymers of this invention can be used directly as a paper or paperboard coating for imparting oil, grease, solvent, water, and moisture vapor resistance. Further, the present invention provides a repulpable paper and paperboard.