Abstract: The composition comprising a cellulose ester including at least 10 weight % of a low-substituted cellulose ester having an average degree of substitu- tion not exceeding 2.15 and giving a 4-week decomposition rate of at least 60 weight % as determined using the amount of evolution of carbon dioxide as an indicator in accordance with ASTM 125209-91. The composition may contains a plasticizer, an aliphatic polyester, a photolysis accelerator such as anatase type titanium dioxide or a biodegradation accelerator such as organic acids and their esters. The low-substituted cellulose ester may be a cellulose ester having an average degree of polymerization from 50 to 250, an average degree of substitution from 1.0 to 2.15 and a residual alkali metal/alkaline earth metal-to-residual sulfuric acid equivalent ratio of 0.1 to 1.1. The biodegradable cellulose ester composition is suitable for the manufacture of various articles including fibrous articles such as tobacco filters.

Abstract: The composition comprising a cellulose ester including at least 10 weight % of a low-substituted cellulose ester having an average degree of substitution not exceeding 2.15 and giving a 4-week decomposition rate of at least 60 weight % as determined using the amount of evolution of carbon dioxide as an indicator in accordance with ASTM 125209-91. The composition may contains a plasticizer, an aliphatic polyester, a photolysis accelerator such as anatase type titanium dioxide or a biodegradation accelerator such as organic acids and their esters. The low-substituted cellulose ester may be a cellulose ester having an average degree of polymerization from 50 to 250, an average degree of substitution from 1.0 to 2.15 and a residual alkali metal/alkaline earth metal-to-residual sulfuric acid equivalent ratio of 0.1 to 1.1. The biodegradable cellulose ester composition is suitable for the manufacture of various articles including fibrous articles such as tobacco filters.

Abstract: The composition comprising a cellulose ester including at least 10 weight % of a low-substituted cellulose ester having an average degree of substitution not exceeding 2.15 and giving a 4-week decomposition rate of at least 60 weight % as determined using the amount of evolution of carbon dioxide as an indicator in accordance with ASTM 125209-91. The composition may contains a plasticizer, an aliphatic polyester, a photolysis accelerator such as anatase type titanium dioxide or a biodegradation accelerator such as organic acids and their esters. The low-substituted cellulose ester may be a cellulose ester having an average degree of polymerization from 50 to 250, an average degree of substitution from 1.0 to 2.15 and a residual alkali metal/alkaline earth metal-to-residual sulfuric acid equivalent ratio of 0.1 to 1.1. The biodegradable cellulose ester composition is suitable for the manufacture of various articles including fibrous articles such as tobacco filters.

Abstract: A novel composition comprising one part by weight of a viscosity-imparting agent and 0.1-100 parts by weight of water is disclosed. Usable viscosity-imparting agents are synthetic polymer resins, polyols and hydrophilic organic substances. The viscosity of the composition is, preferably, in the range of 5-20,000 poises. The composition is suitable as sealant for sliding contact sections, e.g. in an aerosol container using a propellant such as liquefied- or compressed gas.

Abstract: A novel aerosol container structure includes a container body having its different ends a product spout and a propellant inlet both openable and closable, a plate member slidable along on the inside wall of the container body, and a sealant for sliding contact section in a layer containing water or a polyol, wherein the plate member is inserted into said container body to separate its inner space into two sections, one section with the product spout used as product area, and the other section with propellant inlet used as propellant area, and also to hold the sealant in a layer at the sliding contact section located between the periphery of the plate member and the inside wall of the container body, as well as to a process for manufacturing the same.

Abstract: A sealing composition which stops the leakage of a liquefied or compressed gas through a sliding contact section, includes 1 part of a hydrophilic organic polymer and 5-200 parts of a polyol. Usable hydrophilic organic polymers are synthetic and natural polymers including polysaccharides and their derivatives, which have average molecular weights of 10,000-10,000,000. Preferable is pullulan or elsinan which substantially consists of repeating maltotriose units. Any polyols are usable in the invention whether they are in non-crystalline form, providing that they bear 2-20 carbon atoms and hydroxyl groups. The present composition may be further admixed with water and/or non-ionic or anionic surface-active agent in an appropriate amount of facilitate the preparation of the composition and to regulate the viscosity of the composition.

Abstract: A sealing composition which stops the leakage of a liquefied or compressed gas through a sliding contact section, includes 1 part of a hydrophilic organic polymer and 5-200 parts of a polyol. Usable hydrophilic organic polymers are synthetic and natural polymers including polysaccharides and their derivatives, which have average molecular weights of 10,000-10,000,000. Preferable is pullulan or elsinan which substantially consists of repeating maltotriose units. Any polyols are usable in the invention whether they are in non-crystalline or crystalline form, provided that they bear 2-20 carbon atoms and hydroxyl groups. The present composition may be further admixed with water and/or nonionic or anionic surface-active agent in an appropriate amount to facilitate the preparation of the composition and to regulate the viscosity of the composition.

Abstract: The invention relates to a nozzle connected to an aerosol vessel 1 which has an obliquely-handling valve 3. When a finger piece 18 protruding sideways from the nozzle body 14 is pressed toward the aerosol vessel 1, the obliquely-handling valve 3 can be opened easily by lever action without requiring a strong force, and the aerosol contents can be discharged continuously from a discharge portion 17 onto a target area 27 through a discharge path 16 for a relatively long period of time, without tiring the finger of the user.

Abstract: Foundry sand grains coated with a binder composition which comprises 100 wt. parts of methylolmelamine or alkylated methylolmelamine and 5 to 100 wt. parts of a water-soluble organic compound having a hydroxyl group. The sand grains coated with the composition are effective in a low-temperature foundry, especially for forming a core in an aluminum-alloy foundry.

Abstract: A binder for casting sand of the present invention comprises 5-95 wt. % of cellulose acetate and 5-95 wt. % of a thermosetting resin precondensate such as an alkylated methylolmelamine, alkylated methylolurea or a mixture of them, and it is used particularly for the casting carried out at a relatively low casting temperature. Up to about 50% of cellulose acetate may be replaced with an acetate of an aliphatic polyhydric alcohol or an alkyl phthalate. In the resin-coated grains of sand of the present invention, the grains of sand are coated with a binder comprising 5-95 wt. % of cellulose acetate and 5-95 wt. % of a thermosetting resin precondensate.