摘要:
The invention provides a fuel additive compound represented by the general formula (I) wherein n is zero or an integer from 1 to 20 and in each succinic acid moiety one of R1 and R3 is a C3-C80 internal olefin moiety, and the other of R1 and R3 is hydrogen. Additive compositions containing such compounds have low viscosity and are useful in increasing the lubricity of middle distillate fuels.
摘要:
The present invention describes aliphatic polyoxaesters and blends thereof with other polymers that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O-C(O)-C(R 1 )(R 2 )-O-(R 3 )-O-C(R 1 )(R 2 )-C(O)-]+ and two second repeating units of the formulas:[-O-R 5 -C(O)-] B , and([-O-R 13 -C(O)] P -O-) L G wherein R 1 and R 2 are independently hydrogen or an alkyl group containing 1 to 8 carbon atoms; R 3 is an alkylene unit or is an oxyalkylene group of the following formula:-[(CH 2 ) C -O-] D -(CH 2 ) E - wherein C is an integer in the range of from 2 to about 5, D is an integer in the range of from about 0 to about 2,000, and E is an integer in the range of from about 2 to about 5, except when D is zero, in which case E will be from 2 to 12; R 5 and R 13 are different and are selected from the group consisting of -C(R 6 )(R 7 )-, -(CH 2 ) 3 -O-, -CH 2 -CH 2 -O-CH 2 -, -CR 8 H-CH 2 -, -(CH 2 ) 4 -, -(CH 2 ) F -O-C(O)- and -(CH 2 ) K -C(O)-CH 2 -; R 6 and R 7 are independently hydrogen or an alkyl containing from 1 to 8 carbon atoms; R 8 is hydrogen or methyl; F and K are integers in the range of from 2 to 6; B is an integer in the range of from 1 to n such that the number average molecular weight of formula III is less than about 200,000; P is an integer in the range of from 1 to m such that the number average molecular weight of formula XI is less than about 1,000,000; G represents the residue minus from 1 to L hydrogen atoms from the hydroxyl groups of an alcohol previously containing from 1 to about 200 hydroxyl groups; and L is an integer from about 1 to about 200.
摘要:
A polyetherester-based laminating resin composition includes an unsaturated polyetherester resin, and an epoxy acrylate oligomer. The laminating resin has no greater than about 35 percent by weight of ethylenically unsaturated monomer.
摘要:
The invention provides a process for the production of an unsaturated polyester resin comprising in a first step (1) providing and allowing to react (i) dihydric alcohol or oxide and (ii) dibasic carboxylic acid or anhydride, in a second step (2) adding an unsaturated carboxylic acid or anhydride and optionally further dihydric alcohol or oxide to the reaction mixture and further reacting the reagents, wherein the dihydric alcohol or oxide comprises an ethylene glycol oligomer having from 1 to 4 ethylene oxide units or an oxide of such an oligomer and adding to the resin mixture a fire retardant material which is a solid ammonium polyphosphate or derivative thereof. The product shows improved fire retardancy and can be used in applications such as public transport where this is desired.
摘要:
A low-cost way to modulate the reactivity and acid number of polyetherester thermoset resins is disclosed. 'Beginning' and 'end' methods for making dicyclopentadiene (DCPD)-modified polyetherester resins are described. The 'beginning' method comprises first heating a polyether, DCPD, a diol, an insertion catalyst, and a carboxylic acid derivative to produce a mixture that contains the polyether and a DCPD-diol diester adduct. Increasing the temperature causes insertion of the DCPD-diol diester into the polyether to give a DCPD polyetherester resin. The 'end' method reacts a polyetherester resin made by insertion with DCPD to give a DCPD polyetherester resin. Compared with DCPD polyester resins, those of the invention give more flexible thermosets. Compared with unmodified polyetherester resins, the DCPD polyetherester resins offer formulators more control over curing, which eliminates mold distortion and shrinking or cracking of thermoset parts. Thermosets from blends of the subject resins and DCPD polyester resins show synergistic property improvements compared with thermosets from either resin alone.
摘要:
Die Erfindung betrifft härtbare Polyesterharz-Formmassen auf Basis einer styrolischen Lösung eines ungesättigten Polyesterharzes aus Maleinsäure und Phthalsäure einerseits und Diethylenglykol und Neopentylglykol oder Dipropylenglykol andererseits.
摘要:
Die Erfindung betrifft härtbare Polyesterharz-Formmassen auf Basis einer styrolischen Lösung eines ungesättigten Polyesterharzes aus Maleinsäure und Phthalsäure einerseits und Diethylenglykol und Neopentylglykol oder Dipropylenglykol andererseits.