Therapeutic Effect of 4,4'-Diamino-Diphenyl-Sulfone, Corresponding Sulfide and Acetyl Derivatives in Streptococcic Infection

1938 ◽  
Vol 39 (2) ◽  
pp. 339-344 ◽  
Author(s):  
G. W. Raiziss ◽  
M. Severac ◽  
J. C. Moetsch ◽  
L. W. Clemence
Keyword(s):  
Therapeutic Effect ◽  
Diphenyl Sulfone ◽  
Diamino Diphenyl Sulfone

scholarly journals Anti-sarcopenic effects of diamino-diphenyl sulfone observed in elderly female leprosy survivors: a cross-sectional study

2015 ◽  
Vol 7 (3) ◽  
pp. 322-329 ◽  
Author(s):  
Sang Yoon Lee ◽  
Won Kim ◽  
Hee-Won Park ◽  
Sang Chul Park ◽  
In Kwon Kim ◽  
...  
Keyword(s):  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Elderly Female ◽  
Diphenyl Sulfone ◽  
Diamino Diphenyl Sulfone

Research on Performance of Flame-Retardant Epoxy Resin Electronic Packaging Materials

2013 ◽  
Vol 763 ◽  
pp. 117-120 ◽  
Author(s):  
Hao Ran Zhou ◽  
Shuang Zhao ◽  
Wei Miao Yu ◽  
Hao Jiang ◽  
Cui Guo ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Electronic Packaging ◽  
Packaging Materials ◽  
Curing Agent ◽  
Tensile Shear ◽  
Matrix Resin ◽  
Diphenyl Sulfone ◽  
Catalyst Dosage ◽  
Diamino Diphenyl Sulfone ◽  
Toughening Agent

In this article, a new flame-retardant epoxy electronic packaging materials was synthesized through the reaction of matrix resin (E-51), flame retardant (neopentyl glycol phosphate melamine sale, NPM), toughening agent (nitrile rubber, CTBN), curing agent (4, 4-diamino diphenyl sulfone, DDS) and curing catalyst (dosage of benzoyl peroxide, BPO). The results showed that: when the flame retardant was added in an amount of 5wt%, ultimate index (LOI) value of the EPNPM system was increased 2 than that of the EPAl (OH)3 system. When the NPM was added in an amount of 5wt%, the tensile shear strength of the composite was increased 18.27% than that of pure composite. Consequently, the EPNPM system prepared showed betterflame retardance and the mechanical properties.

Steroid Acid Amides of Diamino Diphenyl Sulfone

1958 ◽  
Vol 33 (5) ◽  
pp. 474-481 ◽  
Author(s):  
ARPAD BERCZELLER
Keyword(s):  
Diphenyl Sulfone ◽  
Diamino Diphenyl Sulfone

scholarly journals On the Nature of Epoxy Resin Post-Curing

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 466
Author(s):  
James C. Moller ◽  
Rajiv J. Berry ◽  
Heather A. Foster
Keyword(s):  
Molecular Dynamics ◽  
Residual Stress ◽  
Diglycidyl Ether ◽  
Hydroxyl Groups ◽  
Thermal Transitions ◽  
Reaction Type ◽  
Independent Variables ◽  
Diphenyl Sulfone ◽  
Molecular Dynamics Methods ◽  
Diamino Diphenyl Sulfone

Post-curing is intended to improve strength, elevate glass transition, and reduce residual stress and outgassing in thermosets. Also, experiments indicate post-curing temperatures lead to ether crosslinks and backbone dehydration. These results informed molecular dynamics methods to represent them and compare the resulting thermomechanical effects. Diglycidyl ether of bisphenol A (DGEBA)-diamino diphenyl sulfone (DDS) systems were examined. Independent variables were resin length, stoichiometry, and reaction type (i.e., amine addition, etherification, and dehydration). Etherification affected excess epoxide systems most. These were strengthened and became strain hardening. Systems which were both etherified and dehydrated were most consistent with results of post-curing experiments. Dehydration stiffened and strengthened systems with the longer resin molecules due to their intermediate hydroxyl groups for crosslinking. Changes in the concavity of functions fit to the specific volume versus temperature were used to detect thermal transitions. Etherification generally increased transition temperatures. Dehydration resulted in more transitions.

Sign in / Sign up

Export Citation Format

Share Document