Abstract: The present invention has an object to provide curatives for epoxy resins and curing accelerators for epoxy resins, which both have improved subliming and decomposing properties and which, when mixed with an epoxy resin, enable the mixture to be greatly improved in thermal stability that is extremely important for the control of a curing reaction and to have a prolonged pot life (stability as a one-pack mixture comprising the epoxy resin, curative, etc.) and improved curability at low temperatures.

Abstract: The present invention has an object to provide curatives for epoxy resins and curing accelerators for epoxy resins, which both have improved subliming and decomposing properties and which, when mixed with an epoxy resin, enable the mixture to be greatly improved in thermal stability that is extremely important for the control of a curing reaction and to have a prolonged pot life (stability as a one-pack mixture comprising the epoxy resin, curative, etc.) and improved curability at low temperatures.

Abstract: The present invention has an object to provide curatives for epoxy resins and curing accelerators for epoxy resins, which both have improved subliming and decomposing properties and which, when mixed with an epoxy resin, enable the mixture to be greatly improved in thermal stability that is extremely important for the control of a curing reaction and to have a prolonged pot life (stability as a one-pack mixture comprising the epoxy resin, curative, etc.) and improved curability at low temperatures.

Abstract: The present invention has an object to provide curatives for epoxy resins and curing accelerators for epoxy resins, which both have improved subliming and decomposing properties and which, when mixed with an epoxy resin, enable the mixture to be greatly improved in thermal stability that is extremely important for the control of a curing reaction and to have a prolonged pot life (stability as a one-pack mixture comprising the epoxy resin, curative, etc.) and improved curability at low temperatures.

Abstract: The present invention has an object to provide curatives for epoxy resins and curing accelerators for epoxy resins, which both have improved subliming and decomposing properties and which, when mixed with an epoxy resin, enable the mixture to be greatly improved in thermal stability that is extremely important for the control of a curing reaction and to have a prolonged pot life (stability as a one-pack mixture comprising the epoxy resin, curative, etc.) and improved curability at low temperatures.

Abstract: Triazine derivatives of general formula (I); and recording materials excellent in the storage stability of developed images, particularly the resistance thereof to plasticizers.

Abstract: Diphenyl sulfone crosslinking type compounds of general formula (1) and a recording material containing at least one of them. This recording material is excellent in the storage stability of colored images.

Abstract: By using the fluoran compound represented by the following general formula (I); ##STR1## wherein R.sup.1 is alkyl containing 1 to 4 carbon atoms, R.sup.3 is alkyl containing 1 to 8 carbon atoms, R.sup.4 is hydrogen or alkyl containing 1 to 8 carbon atoms, or R.sup.3 and R.sup.4 may bond with each other to form a ring together with a N atom, R.sup.2 is alkyl containing 1 to 4 carbon atoms, and n denotes 0, 1 or 2, however, the substituents represented by R.sup.2 may be different with each other when n is 2, as a color former for color forming recording materials, recording materials which have excellent properties in whiteness of the background of the material under light and in photostability of color-formed images on the materials as well as in sufficient color forming capability of the material even after having exposed them to light, can be provided.

Abstract: Ruminant feedstuffs comprising at least one biologically active substance such as amino acids, salts of amino acids and vitamins which are dispersed in a protectant containing calcium salts of mixed fatty acids as a main component wherein the void ratio is 15% or less and the moisture content is 2% by weight or less are disclosed. The feedstuff preparations of the present invention have excellent rumen bypassing properties and excellent digestion and absorption properties in the abamasum and subsequent digestive organs in addition to the feedstuffs' excellent heat resistant stability.