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公开(公告)号：US6110846A
公开(公告)日：2000-08-29
申请号：US430431
申请日：1999-10-29
摘要： In one embodiment, this invention relates to a bitumen-based built-up roofing system comprising a structural deck covered with a membrane comprising:(A) at least two layers of reinforcement, the bottom layer being attached to said structural deck,(B) a bitumen-based waterproofing adhesive between each layer wherein each layer is adhered to the bitumen-based adhesive between the layers,(C) a bitumen based flood coat over the layers, and(D) a protective layer of mineral aggregate material embedded in the flood coat, wherein the bitumen in at least the flood coat comprises a coal tar composition prepared from a blend comprising:(1) from about 80 parts to about 98 parts by weight of coal tar having an overall float test of from about 50 seconds to about 220 seconds,(2) from about 2 parts to about 20 parts by weight of coal tar pitch having a softening point of from about 140 to about 160.degree. C., and(3) from about 1% to about 20% by weight, based on the total weight of the composition, of an acrylonitrile-butadiene copolymer.
摘要翻译： 在一个实施方案中，本发明涉及一种基于沥青的积层屋顶系统，其包括覆盖有膜的结构甲板，包括：（A）至少两层增强层，底层附着到所述结构甲板上，（B） 每个层之间的沥青防水粘合剂，其中每层粘附到层之间的沥青基粘合剂上，（C）层之间的基于沥青的防水涂层，和（D）嵌入在所述层中的矿物骨料的保护层 防水涂层，其中至少防水涂层中的沥青包含由共混物制备的煤焦油组合物，其包含：（1）约80份至约98份重量的煤焦油，其具有约50秒至 约220秒，（2）约2至约20重量份的软化点为约140至约160℃的煤焦油沥青，和（3）约1重量％至约20重量％ ，基于组合的总重量 n，丙烯腈 - 丁二烯共聚物。
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公开(公告)号：US5969013A
公开(公告)日：1999-10-19
申请号：US126144
申请日：1998-07-30
摘要： Improved coal tar compositions are described which are prepared from a blend comprising:(A) based on the combined weight of coal tar and coal tar pitch, from about 80 parts to about 98 parts by weight of coal tar having an overall float test of from about 50 seconds to about 220 seconds,(B) based on the combined weight of coal tar and coal tar pitch, from about 2 parts to about 20 parts by weight of coal tar pitch having a softening point of from about 140.degree. C. to about 160.degree. C., and(C) from about 1% to about 20% by weight, based on the total weight of the composition, of an acrylonitrile-butadiene copolymer. In one embodiment up to 35 parts by weight of the coal tar (A) is replaced with a coal tar selected from coal tars having softening points of from about 52.degree. C.-60.degree. C., and from about 56.degree. C.-64.degree. C. The coal tar compositions are not emulsions, and generally will not contain any significant amount of water (e.g., less than 0.5% by weight). The invention also relates to a process for preparing the coal tar compositions which comprises the steps of:(A) preparing at an elevated temperature, a first mixture comprising(A-1) from about 80 parts to about 98 parts by weight of coal tar having an overall float test of from about 50 seconds to about 220 seconds, and(A-2) from about 2 parts to about 20 parts by weight of coal tar pitch having a softening point of from about 140.degree. C. to about 160.degree. C.,(B) maintaining the first mixture at a temperature of at least about 170.degree. C.,(C) adding to the first mixture, from about 1% to about 20% by weight, based on the total weight of the composition, of an acrylonitrile-butadiene copolymer to form a second mixture and(D) mixing the copolymer into the second mixture.The coal tar compositions of the present invention are useful particularly as roofing, waterproofing and maintenance materials. More particularly, the coal tar compositions are useful in built-up roofing (BUR) applications. The coatings formed from the coal tar compositions of the invention exhibit improved tensile, elongation and recovery characteristics, improved fatigue resistance, improved adhesive qualities, and improved cold temperature performance.
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3.发明授权Methods of re-coating and re-covering bitumen-based built-up roofing membranes 失效基于沥青的积层屋顶膜的再涂覆和再覆盖方法公开(公告)号：US06360511B1
公开(公告)日：2002-03-26
申请号：US09571123
申请日：2000-05-12
IPC分类号： E04G2302
CPC分类号： E04D11/02 , C08L95/00 , Y10T442/2213 , Y10T442/2221 , Y10T442/3626 , Y10T442/3821 , C08L2666/02 , C08L55/02 , C08L2666/08
摘要： A method of recoating a bitumen-based built-up roofing membrane. The roofing membrane is recoated by removing loose mineral aggregate, if any, from the surface of the existing roofing membrane, cleaning the surface of the existing roofing membrane, applying a bitumen based flood coat over the cleaned surface, and embedding a layer of mineral aggregate material into the flood coat. The flood coat comprising a coal tar composition prepared from a blend comprising from about 80 parts to about 98 parts by weight of coal tar having an overall float test of from about 50 seconds to about 220 seconds, from about 2 parts to about 20 parts by weight of coal tar pitch having a softening point of from about 140 to about 160° C., and from about 1% to about 20% by weight, based on 25 the total weight of the composition, of an acrylonitrile-butadiene copolymer.
摘要翻译： 一种基于沥青的积层屋顶膜的重新涂布方法。 通过从现有屋顶膜的表面去除松散的矿物骨料（如果有的话）来清理屋面膜，清洁现有的屋顶膜的表面，在清洁的表面上施加沥青基的防水涂层，并且将一层矿物聚集体 材料进入防水外套。 防水涂层包含由共混物制备的煤焦油组合物，其包含约80重量％至约98重量份的具有约50秒至约220秒的总体浮法试验的煤焦油，约2份至约20份， 软化点为约140至约160℃的煤焦油沥青的重量，基于组合物总重量的约1％至约20％的丙烯腈 - 丁二烯共聚物。
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公开(公告)号：US6127292A
公开(公告)日：2000-10-03
申请号：US426242
申请日：1999-10-25
CPC分类号： E04D11/02 , C08L95/00 , Y10T442/2861 , Y10T442/2926 , Y10T442/2992 , Y10T442/3626 , Y10T442/3821 , Y10T442/50 , Y10T442/56
摘要： In one embodiment, this invention relates to a bitumen-based built-up roofing system comprising a structural deck covered with a membrane comprising;(A) at least two plied layers of reinforcement, the bottom layer being attached to said structural deck,(B) a separately applied bitumen-based waterproofing adhesive between each layer wherein each ply is firmly adhered to the bitumen-based adhesive applied between the plies,(C) a bitumen based flood coat over the plied layers, and(D) a protective layer of inert mineral aggregate material embedded in the flood coat, wherein the bitumen in at least the flood coat comprises a coal tar composition prepared from a blend comprising:(1) from about 80 parts to about 98 parts by weight of coal tar having an overall float test of from about 50 seconds to about 220 seconds,(2) from about 2 parts to about 20 parts by weight of coal tar pitch having a softening point of from about 140 to about 160.degree. C., and(3) from about 1% to about 20% by weight, based on the total weight of the composition, of an acrylonitrile-butadiene copolymer.In other embodiments, the present invention relates to a coal tar impregnated reinforcement sheet; a method of re-coating a bitumen-based built-up roofing membrane; a method of re-coating a built-up roofing system having a mineral-surfaced cap sheet; and a method of re-covering a bitumen-based built-up roofing membrane.
摘要翻译： 在一个实施方案中，本发明涉及一种基于沥青的积层屋顶系统，其包括覆盖有膜的结构甲板， （A）至少两层增强层，底层附着在所述结构甲板上，（B）在每一层之间分开施加的沥青防水粘合剂，其中每个帘布层牢固地粘附在施加在第二层之间的沥青基粘合剂 （C）在层叠层上的基于沥青的防水涂层，和（D）包埋在防水涂层中的惰性矿物骨料的保护层，其中至少防水涂层中的沥青包含由 共混物，其包含：（1）约80份至约98份重量的具有约50秒至约220秒的总浮选试验的煤焦油，（2）约2份至约20份重量的煤焦油 沥青具有约140至约160℃的软化点，和（3）基于组合物总重量的约1重量％至约20重量％的丙烯腈 - 丁二烯共聚物。 在其它实施方案中，本发明涉及一种煤焦油浸渍增强片; 一种重新涂覆沥青的积层屋顶膜的方法; 一种重新涂覆具有矿物表面覆盖片的积层屋面系统的方法; 以及重新覆盖基于沥青的积层屋顶膜的方法。
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