silicone

(redirected from Cyclomethicone)
Also found in: Dictionary, Thesaurus, Medical.
Related to Cyclomethicone: Dimethicone

silicone,

polymerpolymer
, chemical compound with high molecular weight consisting of a number of structural units linked together by covalent bonds (see chemical bond). The simple molecules that may become structural units are themselves called monomers; two monomers combine to form a dimer,
..... Click the link for more information.
 in which atoms of silicon and oxygen alternate in a chain; various organic radicals, such as the methyl group, CH3, are bound to the silicon atoms. Silicones, which are unusually stable at extreme temperatures (both high and low), may occur as liquids, rubbers, resins, or greases. Silicones are prepared from halides of organic silicon compounds by decomposition. Such compounds are chosen and used in mixtures that allow the desired molecular weight and degree of cross-linking to be obtained in the final polymer. Water repellent, chemically inert, and stable at extreme temperatures, silicones are used as protective coatings and electrical insulators and in caulk.

Implants consisting of silicone gel surrounded by hard silicone were used in reconstructive and cosmetic breast surgery until 1992. The safety of inserting silicone prostheses into the body was questioned in a large product-liability case involving breast implantsbreast implant,
saline- or silicone-filled prosthesis used after mastectomy as a part of the breast reconstruction process or used cosmetically to augment small breasts.
..... Click the link for more information.
, but an Institute of Medicine panel concluded in 1999 that there was no evidence linking such implants with cancer, autoimmune diseases, and other serious illnesses. The use of such silicone implants for reconstructive surgery and for cosmetic surgery has been again approved by the FDA since 1998 and 2006 respectively.

The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

silicone

[′sil·ə‚kōn]
(materials)
A fluid, resin, or elastomer; can be a grease, a rubber, or a foamable powder; the group name for heat-stable, water-repellent, semiorganic polymers of organic radicals attached to the silicones, for example, dimethyl silicone; used in adhesives, cosmetics, and elastomers.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

silicone

One of the family of polymeric materials in which the recurring chemical group contains silicon and oxygen atoms as links in the main chain; derived from silica and methyl chloride; characterized by resistance to heat and a low coefficient of thermal expansion.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

silicone

Chem
a. any of a large class of polymeric synthetic materials that usually have resistance to temperature, water, and chemicals, and good insulating and lubricating properties, making them suitable for wide use as oils, water-repellents, resins, etc. Chemically they have alternate silicon and oxygen atoms with the silicon atoms bound to organic groups
b. (as modifier): silicone rubber
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

silicone

A material that is used to make lubricants, sealants, adhesives, gels, coatings and breast implants. Silicone (pronounced "sill-uh-kone") is a compound of silicon (pronounced "sill-uh-kin") and other materials. See silicon.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
These results are different from what was reported in another study in humans [20] even though we used the same concentration of dimethicone and cyclomethicone. One possible explanation for the different results may be that the human study evaluated a protective effect of dimethicone in healthy volunteers after an acute insult rather than the ability to correct chronic changes, as the ones seen in patients with naturally occurring AD.
The key driver for the market of cyclomethicone is the growing cosmetics market.
LexFeel WOW DT--100% natural cyclomethicone alternative with a dry touch
* INOLEX has unveiled its next generation of alternatives for cyclomethicone fluids in response to growing market demand for silicone-free ingredient options.
* Innollient[TM] LO - Eco Cert/Cosmos, Cyclomethicone like feel, excellent pigment dispersing
9,808,414 B2; ELC Management LLC, Melville, NY, has patented a method for whitening discrete hyper pigmented spots on skin that entails applying to the spots a liquid pigmented treatment composition that contains at least one skin whitening active; a polymeric coating material comprising a composite polymer that is the reaction product of a silanol endblocked polydimethyl siloxane and a silicate resin; a volatile solvent selected from isododecane, isohexadecane, dimethicone, cyclomethicone, and mixtures thereof; a non-volatile silicone oil having a viscosity ranging from 20 to 200,000 est at room temperature; a silicone surfactant; and titanium dioxide in combination with pigments.
The composition does not include cyclomethicone, other methicones, or other silicone-derived components.
The composition contains zinc oxide, octinoxate, a-arbutin, aloe barbadensis leaf juice, water, ascorbic acid; bis-vinyl dimethicone copolymer; camellia sinensis leaf (green tea) extract; C13-14 isoparaffin, caprylic/ capric triglyceride, cucumis sativus fruit extract, cyclomethicone, dimethicone, ethylhexylglycerin, glycerin, glyceryl stearate, glycrrhiza glabra extract, helianthus annuus oil, laureth-7, niacinamide, parfum, PEG-100 stearate, phenoxyethanol, polyacrylamide, polysorbate-20, punica granatum extract and tocopheryl acetate.