摘要:
The invention relates to a hydrogenated hydrocarbon resin of a softening point from 75.degree. to 110.degree. C. having an Mw/Mn of less than 2 as determined by GPC, an aromaticity level of from 15 to 25%, and a melt viscosity in mPa.s at a shear rate of 50 sec.sup.-1 of less than 500 mPa.s, preferably less than 300 mPa.s at 160 .degree. C.
摘要:
This invention relates to an adhesive composition comprising a copolymer comprising units derived from one or more macromonomers and an unsaturated acid or an unsaturated anhydride wherein the weight average molecular weight of the copolymer is at least twice the weight average molecular weight of the macromonomer, the melt index of the copolymer is 1 dg/min or more, and wherein the macromonomer:(1) has a weight average molecular weight between 500 and 100,000;(2) has at least 30% terminal unsaturation; and(3) comprises a copolymer of ethylene and at least one .alpha.-olefin, and/or a copolymer of propylene and ethylene or an .alpha.-olefin.
摘要:
Resins having an improved combination of softening point and tackifying properties together with good color and heat stability are obtained by Freidel-Crafts copolymerization of a C.sub.5 /C.sub.6 unsaturated feed and 5 to 30 wt. % of para methyl styrene.
摘要翻译:通过C 5 / C 6不饱和进料的Freidel-Crafts共聚和5〜30wt。%的反应,得到具有改善的软化点和增粘性能的组合以及良好的颜色和热稳定性的树脂。 %的对甲基苯乙烯。
摘要:
Hot melt adhesives comprising ethylene/vinyl acetate copolymer, wax, and a resin containing 5 to 80 wt. % of units derived from olefinically unsaturated aromatic compounds, 5 to 80 wt. % of units derived from C.sub.5 or C.sub.6 olefines or diolefines or a mixture thereof, and from 7 to 45% of units derived from a terpene. The hot melt adhesive composition has improved color and compatibility over ethylene/vinyl acetate copolymer and wax blends containing resins of significant portions of cyclopentadiene or dicyclopentadiene. The hot melt adhesive of the invention also show improved adhesive properties on substrate such as glass and aluminum.
摘要:
Resins having an improved combination of softening point and tackifying properties together with good color and heat stability are obtained by Freidel-Crafts copolymerization of 4 to 80 wt. % of a C.sub.5 /C.sub.6 unsaturated feed; 5 to 55 wt. % of a terpene and 3 to 55 wt. % of an unsaturated aromatic compound.