摘要:
A propylene-graft-unsaturated polyester is disclosed comprising the reaction product of a polypropylene, an unsaturated polyester and a free radical initiator. The polypropylene-graft-unsaturated polyester is generally prepared by reacting at elevated temperatures using a peroxide. The polypropylene-graft-unsaturated polyester is very useful as a compatibilizing agent in blends of polyester and ethylene-propylene rubber to improve the impact strength of the polyester.
摘要:
Disclosed are certain polyester adhesive blend compositions comprising about 45-90 wt. percent of a copolyester, about 3-15 wt. percent of a plasticizer, and about 7-40 wt. percent of a tackifying resin. The blends are particularly useful in hot-melt glue gun applications.
摘要:
A thermoplastic molding composition having a high neat deflection temperature but a relatively low melt extrusion temperature is formed by blending a polyetherimide with about 35 to about 80 weight percent of a copolyester of terephthalic and/or isophthalic acid and a glycol component comprising ethylene glycol and up to about 60 mol percent of 1,4-cyclohexanedimethanol. The blend also has a high flexural modulus and can be used to form plastic articles that can be molded at moderate temperatures but retain flexural strength at elevated temperatures. Certain compositions of the invention are clear, single phase solid solutions.
摘要:
Disclosed are certain copolyesters comprising an acid component of (1) 60 to 75 mol % of terephthalic acid, and (2) 25 to 40 mol % of a dicarboxylic acid, and a glycol component of (1) 55 to 65 mol % 1,4-butanediol, and (2) 35 to 45 mol % one or more other aliphatic diols. The copolyester or formulation thereof with a tackifying resin has excellent properties for use as a glue gun adhesive.
摘要:
The hot-melt adhesives of the present invention comprise a blend of poly(propylene-co-higher 1-olefin), tackifying resin and crystalline propylene containing polymer. These hot-melt adhesive compositions have a novel combination of properties including strong T-peel and lap shear bonds to both low- and high-density polyethylene with excellent creep resistance at ambient temperatures. Therefore, these new hot-melt adhesives are excellent adhesives for applications such as sealing high-density polyethylene grocery bags and low-density shipping bags.
摘要:
A dimensionally stable polyester melt blown web composition is disclosed. The polyester melt blown web is obtained by contacting the web with a solvent, and drying the web. The solvents which are used have total solubility parameters (S.sub.o) of 8.5 to 12.0 (cal/cm.sup.3).sup.1/2, solubility parameter component due to hydrogen bonding (S.sub.h) of 0.5 to 5.5 (cal/cm.sup.3).sup.1/2 and solubility parameter component due to polar forces (S.sub.p) of 0.5 to 7.0 (cal/cm.sup.3).sup.1/2). The polyesters used for such melt blown webs include poly(ethylene-terephthalate), poly(cyclohexylene dimethylene terephthalate) and blends and copolymers of these polymers.
摘要翻译:公开了尺寸稳定的聚酯熔喷纤维网组合物。 聚酯熔喷纤维网通过将纤维网与溶剂接触并干燥纤维网获得。 使用的溶剂的总溶解度参数(So)为8.5〜12.0(cal / cm 3)1/2,由于氢键(Sh)为0.5〜5.5(cal / cm 3)1/2的溶解度参数成分和溶解度参数 由于极性力(Sp)为0.5〜7.0(cal / cm 3)1/2)。 用于这种熔喷纤维网的聚酯包括聚(对苯二甲酸乙二醇酯),聚(亚环己基二亚甲基对苯二甲酸酯)和这些聚合物的共混物和共聚物。
摘要:
Disclosed are hot-melt adhesive compositions comprising discrete particles of polyester adhesives, discrete particles of polyester containing a halogenated organic compound and discrete particles containing an antimony compound. Also disclosed is a method of incorporating both a halogenated organic compound and an antimony compound into a polyester adhesive composition.
摘要:
Disclosed is an adhesive composition comprising:(a) an amorphous or a crystallizable polyester having a melting point of about 80.degree. C. to about 230.degree. C. and a heat of fusion of 0 to about 18 calories per gram, and(b) from about 1 to about 35% by weight of a compound selected from the group consisting of ##STR1## wherein R.sub.1 is benzyl or phenyl and R.sub.2 is benzyl, phenyl or an alkyl group containing 1 to 10 carbon atoms, and ##STR2## wherein R.sub.3 is phenyl or benzyl, R.sub.4 is phenyl or benzyl and R.sub.5 is an alkyl group containing 1 to 10 carbon atoms.