Detail of "85-43-8"

CAS Number:
85-43-8
Name:
1,3-Isobenzofurandione,3a,4,7,7a-tetrahydro-
Superlist Name:
1,2,3,6-Tetrahydrophthalic anhydride
Molecular Structure:
Formula:
C₈H₈O₃
Molecular Weight:
152.16
Deleted CAS:
27936-16-9,57570-09-9
Synonyms:
4-Cyclohexene-1,2-dicarboxylicanhydride (8CI);1,2,3,6-Tetrahydrophthalic acid anhydride;3a,4,7,7a-Tetrahydro-1,3-isobenzofurandione;Cyclohexene-4,5-dicarboxylic anhydride;HK 019;KBH 1098;Maleic anhydride-butadiene adduct;NSC 82642;Rikacid TH;Rikacid THPA;Tetrahydrophthalic acid anhydride;D4-Tetrahydrophthalic anhydride;
EINECS:
201-605-4
Density:
1.289 g/cm³
Melting Point:
101-102 °C
Boiling Point:
305.6 °C at 760 mmHg
Flash Point:
148.2 °C
Risk Codes:
41-42/43-52/53
Safety:
26-36/37/39 Details

Display：

Please post your buying leads,so that our qualified suppliers will soon contact you!
*Required Fields

Powder paint compositions: Powder paint compositions. (Nitto Electric Industrial Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58167656 A2 3 Oct 1983 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09D005-00; C09D003-58. ICA: C08G059-38; C08G059-42; H01B003-40. APPLICATION: JP 82-51522 29 Mar 1982. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 38 The title compns. having melt viscosity 2.5-0.6 P at 150° comprise of triglycidyl isocyanurate (I) [2451-62-9], bisphenol A epoxy resin (II) having melt viscosity 6-10 P at 150° and(or) brominated bisphenol A epoxy resin (III) having melt viscosity 1-4 P at 150°, and tetrahydrophthalic anhydride (IV) [85-43-8]. The epoxy resin components are kept at the A stage and their concn. is maintained within the limits of an area defined by 5 points on a concn. triangle diagram ABC where vertex A = I + IV, B = II + IV, and C = III + IV. The compns. are esp. useful for impregnation of coils. Thus, a melt mixt. of Epikote 1002 [25068-38-6], IV, and 2-undecylimidazole (V) and another melt mixt. 65216-00-4 and 25068-38-6 are just another two chemicals used in this study. of III (XD 8062 [65216-00-4]), IV, and V were mixed with a powder of I, V, and IV to give a compn. having low viscosity and good adhesive strength and impregnation. .

: Correction of: earlier abstract Latent hardeners for epoxy resins. Miyashiro, James J. (Morton-Norwich Products, Inc., USA). Ger. Offen. DE 2418754 7 Nov 1974, 23 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08G030-14. PRIORITY: US 73-352201 18 Apr 1973. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Epoxy resin compns. having a long pot life but hardening rapidly at high temp. are prepd. by mixing the resins with a latent hardener or hardening accelerator comprising either a mixt. or reaction products prepd. from tetrahydrophthalic anhydride (I) [85-43-8] or chlorendic anhydride [115-27-5] and imidazole [288-32-4] or a deriv. such as 2-methylimidazole (II)a [693-98-1]. Thus, 10 parts epoxy cresol novolak resin and 5 parts phenolic novolak resin were mixed with 0.17 part II and 0.33 part I or with 0.5 part product prepd. 51-17-2 and 931-36-2 which are cas registry numbers of chemicals are mentioned. by heating 10 g I and 2.5 g II at 135.degree. for 30 min, giving resins with hardening time 18-20 sec at 180.degree.. Correction of CA t. .