Detail of "2455-24-5"

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Anaerobic adhesives or sealant based on mixtures of methacrylates or acrylates and organic peroxides

Anaerobic adhesives or sealant based on mixtures of methacrylates or acrylates and organic peroxides. Wegemund, Bernd; Galinke, Joachim (Henkel und Cie. G.m.b.H., Ger.). Ger. Offen. DE 2529891 27 Jan 1977, 9 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09J003-14. APPLICATION: DE 75-2529891 4 Jul 1975. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) The title compn. contains (meth)acrylates, peroxides, and 3-25% (based on monomers) of a (meth)acrylate of a hydroxyacid. Thus, a mixt. of tetrahydrofurfuryl methacrylate [2455-24-5] 62.3, 2:1 hydroxyethyl methacrylate-NCO-terminated polyester adducts 26.7, .beta.-acryloyloxypropionic acid [24615-84-7] 5, 70% cumene soln. of cumene hydroperoxide 5, and Bu3N 1 g was used to form a lap joint with 2 pieces of steel, giving a bond with tensile shear strength 2. 101-68-8 and 868-77-9 which are cas registry numbers of substances are two of reagents here.0 kg/mm2 after 96 h at 21.degree., compared with 1.7 kg/mm2 for a control in which the acryloyloxypropionic acid was replaced with acrylic acid. .

Photopolymerizable composition for in-place production of synthetic fingernails

Photopolymerizable composition for in-place production of synthetic fingernails. Lee, Henry Lawrence, Jr.; Orlowski, Jan Alexander; Fromm, Carl Henry (Lee Pharmaceuticals, USA). Ger. Offen. DE 2640708 24 Mar 1977, 27 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: A61K007-04. PRIORITY: US 75-613287 15 Sep 1975. DOCUMENT TYPE: Patent CA Section: 62 (Essential Oils and Cosmetics) Photopolymerizable compns. for prepn. of synthetic fingernails through direct application to human nail tissue comprise 40-90% of .gtoreq.1 Me, Et, Pr, iso-Pr, Bu, iso-Bu, furfuryl, glycyl or tetrahydrofurfuryl acrylate or C1-4 alkylacrylate; 3-40% of .gtoreq.1 acrylic acid or C1-4 alkylacrylic acid ester with a 2-4 HO-group-contg. alc.; 0.1-30% photopolymn. initiator; and 5-25% nonreactive hardened elastomer .There are some reagents with their cas registry numbers 2358-84-1 and 9004-36-8 are used in this study.ltoreq.300.mu. particles or a mixt. of these particles with cellulose ester or cellulose ether ester particles. The hardened compn. had elastic bending modulus .gtoreq.3520 kg/cm2, bending strength .gtoreq.211 kg/cm2, breaking elongation under binding of .gtoreq.3.5%, and adhesion to human nail tissue of .gtoreq.1.76 kg/cm2. For example, one compn. contained tetrahydrofurfuryl methacrylate [2455-24-5] 73.32, diethylene glycol dimethacrylate [2358-84-1] 8.15, 3-benzoyl-1,3-diphenyldioxolane 0.40, cellulose acetate butyrate [9004-36-8] 2.24, particulate 1:1:1 butadiene-methacrylate-styrene block copolymer 13.85, dimethylpolysiloxane 2.04, and pink coloring 0.240-6%. The pastry compn. was applied to natural nails to lengthen them and exposed to 300-400 nm UV light at 8000 .mu.W/cm for 5 min. The hardened compn. had elastic binding modulus 11,382 kg/cm2; bending strength 409.5 kg/cm2; bending break elongation 5.34%; and 3.94 kg-cm2 adhesion to natural nail. The synthetic nails lasted .gtoreq.2 weeks with good splitting resistance and produced no irritation or sensitization. .