Results 161 to 170 of about 179,059 (207)
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Chain-extension and thermal behaviors of poly(p-dioxanone) with toluene-2,4-diisocyanate
Reactive and Functional Polymers, 2005Abstract A method for enhancing the molecular weight of poly( p -dioxanone) (PPDO) has been provided in this investigation. Higher molecular weight biodegradable polymers have been prepared by chain-extending method from lower molecular weight PPDO using toluene-2,4-diisocyanate (TDI) as a chain extender.
Qiao Lai +4 more
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Catalytic Effects of Water Clusters on the Hydrolysis of Toluene-2,4-diisocyanate: A DFT Study
Bulletin of the Chemical Society of Japan, 2015Abstract The reaction mechanism between 2,4-diisocyanatotoluene (2,4-TDI) and water clusters was carried out using density functional theory (DFT) at the B3LYP/6-311++G(d,p) level. The reaction can occur via two pathways. In path a, the 2,4-TDI reacts with water molecules by the attack across the N=C bond to form carbamic acid further ...
Yuan Yuan +6 more
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Toxicology and Applied Pharmacology, 1994
This study was initiated to evaluate the pharmacokinetics/metabolism of 14C-labeled toluene 2,4-diisocyanate (2,4-[14C]-TDI) following oral and inhalation exposure in the rat. For comparison, the pharmacokinetics/metabolism of toluene 2,4-diamine (2,4-[14C]TDA) was also evaluated. Groups of 3 or 4 male rats were given either a single 60 mg/kg oral dose
C, Timchalk, F A, Smith, M J, Bartels
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This study was initiated to evaluate the pharmacokinetics/metabolism of 14C-labeled toluene 2,4-diisocyanate (2,4-[14C]-TDI) following oral and inhalation exposure in the rat. For comparison, the pharmacokinetics/metabolism of toluene 2,4-diamine (2,4-[14C]TDA) was also evaluated. Groups of 3 or 4 male rats were given either a single 60 mg/kg oral dose
C, Timchalk, F A, Smith, M J, Bartels
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International Archives of Allergy and Immunology, 2005
<i>Background:</i> A toluene-2,4-diisocyanate (TDI)-induced asthma model, in which delayed-type hypersensitivity-like asthmatic airway obstruction is elicited restrictively in the lung, has never been developed. <i>Methods:</i> Guinea pigs were percutaneously sensitized with TDI.
Takeshi, Nabe +6 more
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<i>Background:</i> A toluene-2,4-diisocyanate (TDI)-induced asthma model, in which delayed-type hypersensitivity-like asthmatic airway obstruction is elicited restrictively in the lung, has never been developed. <i>Methods:</i> Guinea pigs were percutaneously sensitized with TDI.
Takeshi, Nabe +6 more
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Pharmacology, 2009
It is well known that starting treatment for cedar pollinosis therapy with second-generation antihistamines before the initial day of pollen scattering can relieve nasal symptom severity during the pollen season. Olopatadine hydrochloride (olopatadine) is an antiallergic agent with histamine H<sub>1</sub> receptor antagonistic action.
Tadafumi, Tamura, Naoya, Kimoto
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It is well known that starting treatment for cedar pollinosis therapy with second-generation antihistamines before the initial day of pollen scattering can relieve nasal symptom severity during the pollen season. Olopatadine hydrochloride (olopatadine) is an antiallergic agent with histamine H<sub>1</sub> receptor antagonistic action.
Tadafumi, Tamura, Naoya, Kimoto
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2000
Abstract Toluene 2,4-diisocyanate (TDI) is widely used in the pro duction of polyurethane foams for insulation and in the synthesis of plastics. Common commercial grades of TDI are a mixture of 80% of the 2,4-isomer and 20% of the 2,6-isomer. The 2,4-isomer is more volatile and constitutes the overwhelming component of most industrial
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Abstract Toluene 2,4-diisocyanate (TDI) is widely used in the pro duction of polyurethane foams for insulation and in the synthesis of plastics. Common commercial grades of TDI are a mixture of 80% of the 2,4-isomer and 20% of the 2,6-isomer. The 2,4-isomer is more volatile and constitutes the overwhelming component of most industrial
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New combined phenol/hindered amine photo- and thermal-stabilizers based on toluene-2,4-diisocyanate
Polymer Degradation and Stability, 2003Abstract Reactions of toluene-2,4-diisocyanate with different phenols and different HAS (hindered amine stabilizers) were used to prepare new combined phenol/HAS. As a phenol 2- tert -butyl-4-methoxyphenol ( I ); 2- tert -butyl-4-methylphenol ( II ); 2,4-di- tert -butyl-6-methylphenol ( III ) and 2,4-di- tert -butylphenol ( IV ) were used.
J. Mosnáček +4 more
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Journal of Hazardous Materials, 2013
Toluene diisocyanate (TDI) is a large volume chemical used for the production of polyurethanes. It is sparingly soluble in water, but hydrolyses instantaneously liberating toluene diamine (TDA), which is highly reactive to TDI. The ecotoxicity of TDI is dominated by TDA.
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Toluene diisocyanate (TDI) is a large volume chemical used for the production of polyurethanes. It is sparingly soluble in water, but hydrolyses instantaneously liberating toluene diamine (TDA), which is highly reactive to TDI. The ecotoxicity of TDI is dominated by TDA.
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Clinical & Experimental Allergy, 2008
SummaryBackground Airway inflammation and remodelling contribute to chronic airway obstruction of asthma. Currently, no medication effectively controls airway remodelling and related vascular changes. Therefore, new strategies need to be developed.
M-H, Ahn +7 more
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SummaryBackground Airway inflammation and remodelling contribute to chronic airway obstruction of asthma. Currently, no medication effectively controls airway remodelling and related vascular changes. Therefore, new strategies need to be developed.
M-H, Ahn +7 more
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Journal of Immunological Methods, 1978
Erythrocytes were stabilized and activated for conjugation by simultaneous treatment with toluene-2,4-diisocyanate and glutaraldehyde. Following conjugation with an antigen, these cells were suitable for use in passive hemagglutination tests and could be stored in either hypo- or hyper-tonic solutions at 4 degrees C for at least 3 months without ...
D E, Mahan, R L, Copeland
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Erythrocytes were stabilized and activated for conjugation by simultaneous treatment with toluene-2,4-diisocyanate and glutaraldehyde. Following conjugation with an antigen, these cells were suitable for use in passive hemagglutination tests and could be stored in either hypo- or hyper-tonic solutions at 4 degrees C for at least 3 months without ...
D E, Mahan, R L, Copeland
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