摘要:
The foregoing and other objects and advantages of the present invention are accomplished by a hot melt adhesive comprising a blend of a low molecular weight polyolefin, olefin-carboxylic acid graft polymer or olefin-maleic anhydride graft polymer or blend thereof; a propylene-ethylene copolymer or propylene-ethylene-butene terpolymer; and a tackifying resin or blend of tackifying resins. The blend can include an antioxidant or blends of antioxidants, a high molecular weight or functionalized polyolefin or a copolymer or terpolymer of a vinyl monomer (e.g., ethylene/vinyl acetate).
摘要:
The present invention relates to a starch-based adhesive composition for use in cigarette manufacture. The adhesive composition includes at least about 2 percent of a dispersible-starch that thickens on heating to a temperature greater than about 50.degree. C.
摘要:
The process for the reaction of bicyclic amide acetals with reactive protic compounds of the general Formula ##STR1## wherein Y represents a member selected from the group consisting of ##STR2## R.sup.1 represents a member selected from the group consisting of hydrogen, an alkyl group having from 1 to 10 carbon atoms, an aryl group having from 6 to 12 carbon atoms, and R.sup.2 represents a member selected from the group consisting of an alkyl group having from 1 to 10 carbon atoms, an aryl group having from 6 to 12 carbon atoms, an alkylene ether group having from 1 to 50 carbon atoms, an arylene ether group having from 6 to 50 carbon atoms such as ethyl carbamate to form novel products which are useful as curing agents, blowing agents and monomers is disclosed.
摘要:
Blends of polyamide polyols and urethane diols are prepared by reacting alkyl (methyl) esters of polybasic acids (preferably dibasic acids) with excess alkanolamine (preferable ethanol amine propanol amine) to form the polyamide polyol of the polybasic acid and alkyl alcohol. The alkyl alcohol is removed and the excess ethanolamine is reacted with ethylene or propylene carbonate to form the urethane diol. This blend of urethane diol and polyamide polyol is useful in various polymer formulations.
摘要:
The process for preparing novel compounds having the formula ##STR1## by the reaction of a bicyclic amide acetal of formula ##STR2## and an olefinically unsaturated carboxylic acid of formula ##STR3## wherein R, R', R" and R"' independently represent hydrogen, an alkyl group or an alkyl ether group having from 1 to 20 carbon atoms, an aryl group or an aryl ether group having from 6 to 12 carbon atoms is described.
摘要:
A rapid curing composition comprising a mixture of (A) a polyepoxide and an amine curing agent and (B) a novel thiocyanate salt of the reaction product of an alkylene polyamine, such as ethylene diamine, and a bicyclic amide acetal and a method for curing said composition are described.
摘要:
A process for accelerating the cure rate of a mixture comprising an epoxy resin and an amine hardener comprising including in the mixture from 0.5% to 15% by weight of a catalyst which is the reaction product of a bicyclic amide acetal and ammonium thiocyanate and curing the resulting mixture at a temperature of from about abient temperature to about 120.degree. C. is described.
摘要:
Thermoset polymers are prepared by reacting an ethylenically unsaturated resin monomer and a bicyclic amide acetal with a polyisocyanate in the absence or presence of a vinyl monomer. Reaction rates are suitable for effecting RIM processing. The resultant polymers exhibit improved impact resistance. Further variation in physical properties can be achieved through the use of a diol chain extender for the polyisocyanate.
摘要:
A process for preparing novel poly(arylene ether-amide) polyols and their use in the formation of polyurethanes wherein the poly(arylene ether-amide) polyols are formed by reaction of a bicyclic amide acetal with a polyphenolic compound are described.
摘要:
A composition comprising a mixture of a polyepoxide, an isocyanate and a salt of a polyamine and a polyhydric phenol and a process for curing said composition by heating it to a temperature in the range of from about 80.degree. C. to about 150.degree. C. are described.