摘要:
Described are viscoelastic polyurethane foams that comprise the reaction product of a polyisocyanate and an active-hydrogen composition comprising an amidated or transesterified oligomeric natural oil polyol.
摘要:
Described is a method of chemically modifying a starting composition comprising polyunsaturated alkene compounds in order to convert at least a portion of the polyunsaturated alkene compounds into functionalized monounsaturated alkene compounds. The separated monounsaturated alkene compounds may be useful, for example, as a starting material in the synthesis of organic chemicals such as diacids, diesters, and the like.
摘要:
A wax comprises a metathesis product and/or a product that resembles, at least in part, a product which may be formed from a metathesis reaction. The wax may be used to form articles, for example, candles (container candles, votive candles, and/or a pillar candles), crayons, fire logs, or tarts. The wax commonly includes other components in addition to the metathesis product.
摘要:
Described are methods of making organic compounds by metathesis chemistry. The methods of the invention are particularly useful for making industrially-important organic compounds beginning with starting compositions derived from renewable feedstocks, such as natural oils. The methods make use of a cross-metathesis step with an olefin compound to produce functionalized alkene intermediates having a pre-determined double bond position. Once isolated, the functionalized alkene intermediate can be self-metathesized or cross-metathesized (e.g., with a second functionalized alkene) to produce the desired organic compound or a precursor thereto. The method may be used to make bifunctional organic compounds, such as diacids, diesters, dicarboxylate salts, acid/esters, acid/amines, acid/alcohols, acid/aldehydes, acid/ketones, acid/halides, acid/nitriles, ester/amines, ester/alcohols, ester/aldehydes, ester/ketones, ester/halides, ester/nitriles, and the like.
摘要:
Enhanced oligomeric polyols are reported. The enhanced oligomeric polyols may be prepared by a method comprising the steps of: (a) providing an oligomeric polyol that comprises at least one glycerol fatty acid ester having at least one glycerol fatty acid ester bond; wherein at least 5% of the ethyldenyl groups (*C=C*) in the glycerol fatty acid ester are substituted with a bonding structure selected from the group consisting of: C-*C-C*-C; O-*C-C*-O; C=*C-C*-C, and mixtures thereof, where * is used to denote the original carbon atoms in the ethylidenyl group; and (b) cleaving at least a portion of the glycerol fatty acid ester bonds to form the enhanced oligomeric polyol. The enhanced oligomeric polyols are useful in making polymers such as polyurethanes.
摘要翻译:报道了增强低聚多元醇。 增强的低聚多元醇可以通过包括以下步骤的方法制备:(a)提供包含至少一种具有至少一种甘油脂肪酸酯键的甘油脂肪酸酯的低聚多元醇; 其中所述甘油脂肪酸酯中的至少5%的乙烯基(* C = C *)被选自以下的键合结构取代:C- * C-C * -C; O- * C-C * -O; C = * C-C * -C及其混合物,其中*用于表示亚乙基中的原始碳原子; 和(b)切割甘油脂肪酸酯键的至少一部分以形成增强的低聚多元醇。 增强的低聚多元醇可用于制备聚合物如聚氨酯。
摘要:
A process and apparatus are disclosed for conversion of β-hydroxy carbonyl compounds forming useful conversion products including, e.g., acrylic acid [CAS No. 79-10-7], acrylates, and acrylamide [CAS No. 79-06-01]. Conversion products find use, e.g., as feedstock and/or end-use chemicals.
摘要:
The invention relates to polyurethane foams comprising oligomeric polyols. In embodiments of the invention, the polyurethane foams comprise the reaction product of: (a) a polyisocyanate; and (b) an active-hydrogen containing composition comprising an oligomeric polyol having a hydroxyl number of about 45 to about 65 mg KOH/g, a number average hydroxyl functionality (Fn) of less than about 2.7, and about 40% weight or greater oligomers. The polyurethane foams of the invention may be slabstock foams or molded foams. Also disclosed are low odor polyols and polyurethane compositions.
摘要:
The invention relates to polyurethane foams comprising oligomeric polyols. In embodiments of the invention, the polyurethane foams comprise the reaction product of: (a) a polyisocyanate; and (b) an active-hydrogen containing composition comprising an oligomeric polyol having a hydroxyl number of about 45 to about 65 mg KOH/g, a number average hydroxyl functionality (Fn) of less than about 2.7, and about 40% weight or greater oligomers. The polyurethane foams of the invention may be slabstock foams or molded foams. Also disclosed are low odor polyols and polyurethane compositions.
摘要:
There is disclosed the use as an antifreeze and/or coolant of 3-hydroxypropionic acid, a C1 - C4 alkyl ester of 3-hydroxypropionic acid, an ammonium salt of 3-hydroxypropionic acid, a C1 - C4 alkyl ammonium salt of 3-hydroxypropionic acid, an alkali metal salt of 3-hydroxypropionic acid, an alkaline earth metal salt of 3-hydroxypropionic acid, or mixture thereof. Also disclosed are aqueous and non-aqueous solutions thereof, and blends of the antifreezes and/or coolants that additionally comprise a glycol, such as ethylene glycol or propylene glycol.
摘要:
A process for producing industrially important chemicals from renewable resources is disclosed. This "biobased" process employs readily available, renewable resources comprising fatty acids rather than exploiting fossil sources, such as coal and petroleum. In one embodiment of the process 1-octene, along with methyl-9-decenoate and butadiene, is produced from linoleic acid via an enzymemediated isomerization reaction, followed by a metathesis reaction with ethylene. Linoleic acid can be isolated from vegetable oils, such as soybean oil.