Composition for obtaining foam and method thereof |
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IPC classes for russian patent Composition for obtaining foam and method thereof (RU 2091407):
 The way to obtain urea-formaldehyde foam / 2082731
The invention relates to the field of polymeric materials, namely urea-formaldehyde foams used as insulation materials in construction, to improve soil structure and manufacture of complex fertilizers in agriculture, and also for arranging the flowers
 Composition for anti-friction coatings / 2079519
 Composition for obtaining foam / 2074206
 The method of manufacture of chipboards / 2074090
The invention relates to the production of building materials, allows qualified to recuperate processing waste wood and can be used in woodworking, furniture and construction industries
 Press weight for plate materials / 2031915
The invention relates to woodworking industry and can be used in the production of chipboards
 Polymer press-composition / 2026324
The invention relates to a wood press the compositions and can be applied as removable elements in different types of packaging
 Polymer press-composition / 2022985
The invention relates to woodworking industry and can be used in construction and furniture production
 A method of manufacturing plates of sunflower husk / 2014216
The invention relates to the recovery of waste oil and fat industry, production based on waste materials type of chipboard and can be used in the woodworking and construction industries
Composition for obtaining foam / 2074206
 The method of producing foam / 2039768
The invention relates to methods for producing foams based on urea-formaldehyde resin and can be used for thermal insulation of building structures, pipelines and so on
 The method of producing polyurethane foams / 2010813
The invention relates to the field of processing of macromolecular substances to porous
Aminophenols, method thereof, a component of the product forcompensation of the aminoplast component hardener - foaming agent, the use of aminophenolate / 2088605
The invention relates to the production of stable, non-shrink, if necessary, refractory and/or nonradiative of aminos, used as a filler in building materials, protective coatings for agriculture or as a means makapaglaro
 Composition for foam / 2086586
The invention relates to compositions for the preparation of foams that can be used in construction, for example, as insulation for roofs, for pipelines for cold and hot water, as a filler panels
 The method of obtaining water-resistant phenol-formaldehyde foam / 2085562
The invention relates to the production of foams intended for the manufacture of heat-insulating elements, used as thermal insulation of building structures, buildings and installations of heating and refrigeration units
 Method of manufacturing porous rubber moulded products / 2076879
The invention relates to rubber industry and can be used in the manufacture of lightweight porous rubber tselnoformovannye devices of the heel, sole, sealing, etc
 Composition for obtaining foam / 2065458
The invention relates to the manufacture of foams and can be applied in heat technology, the production of refrigerators, as well as in the construction
The method of producing foam / 2039768
The invention relates to methods for producing foams based on urea-formaldehyde resin and can be used for thermal insulation of building structures, pipelines and so on
 Hydroxycobalamin oligopyrimidine as surfactants in the compositions for the preparation of polyurethane foams / 2037502
The invention relates to new chemical compounds, specifically to the hydroxyl-containing oligomerisation that can be used as surface-active substances (surfactants) upon receipt of polyurethane foams
 The method of producing foam / 2034001
 Composition for insulating foam / 2022978
The invention relates to the production of foams and can be used as heat and sound insulation, as well as to fill the hollow structures in the auto, aircraft and shipbuilding
 Composition for foam / 2001063
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(57) Abstract: Usage: composition for insulating materials, mainly in construction. The inventive composition to obtain a foam contains carbamoylphenoxy resin, a blowing agent, resorcinol and liquid lignosulfonate, pre-modified urea. The foam is produced by mixing and foaming the composition in the compressed air. 2 C. p. F.-ly, 3 tables. The invention relates to compositions for insulating materials and can be used in construction. Known foam obtained on the basis of urea-formaldehyde resin. The foam is produced by mixing two components, the polymer component and the foam curing agent. As the polymer component is usually used urea-formaldehyde resin, which may optionally contain various additives, for example, hydroxylamine hydrochloric acid [1] urea [2]The closest analogue to this invention is a composition for obtaining a foam and its production method by mixing and foaming composition comprising karbamidformal in the compressed air [3] The main disadvantage of such urea-formaldehyde foams is their high toxicity, limiting their scope. High toxicity of urea-formaldehyde foams due to the chemical synthesis and curing urea-formaldehyde resins. The objective of the invention is to reduce the toxicity of urea-formaldehyde foam. The technical result is achieved in that the composition additionally contains resorcinol and liquid modified lignosulfonates pre-modified urea in the amount of 3-6 wt.h. urea 10 wt.h. liquid lignosulfonate, in the following ratio, wt.h. Urea-formaldehyde resin 47,48 37-31 Modified lignosulfonates 2,47 12,19 Resorcinol 0,05 0,50 Surfactant 1,50 2,50 Phosphoric acid 1,50 2,50 Water 47,00 45,00 moreover, the liquid lignosulfonate before mixing with urea-formaldehyde resin is subjected to pre-modification urea for 0.5-2.5 hours at a temperature of 30 - 60oC. This method can significantly reduce the emission of formaldehyde from urea-formaldehyde foams without reducing the emer 1. Liquid lignosulfonate in an amount of 10 wt.h. load capacity, heated to 40oC and add to it 4 wt.h. carbamide. The mixture is stirred for 1 h Modified lignosulfonates, taken in an amount of 1 wt.h. mixed with 48,95 wt.h. urea-formaldehyde resin and 0.05 wt.h. of resorcinol. The resulting mixture is combined with a blowing agent containing 2.5 wt.h. phosphoric acid, 2.5 wt.h. explore only briefly-active substances and 45.0 wt.h. water in the compressed air. Examples 2-5. Technology modified lignosulfonates and obtain foams of example 1. The content of the components of the composition are given in table. 1. Example 6. Liquid lignosulfonate modified urea in the amount of 1.5 wt. including 10 wt.h. lignosulfonate at a temperature of 40oAnd duration modification 1 tsp urea-Formaldehyde resin in the amount ΓΈ 42.45 wt.h. mixed with modified lignosulfonates, taken in an amount of 7.5 wt. hours and 0.05 wt.h. of resorcinol. The resulting mixture is combined with a blowing agent containing 2.5 wt.h. phosphoric acid, 2.5 wt.h. surfactants and 45.0 wt.h. water in the compressed air. Examples 7-9. Liquid lignosulfonate modify the deposits of foam as in example 6. Examples 10-16. The parameters that define the mode modified lignosulfonates, are given in table.2. The ratio of the components in the composition are given in table.1. Technology of production of foam as in example 1. After production of the foams was determined by their density, compressive strength, thermal conductivity, water absorption, emission of formaldehyde by the method of K1 and chamber method. The results are given in table. 3. The results show that the formaldehyde emission is reduced with the introduction of 2,47-12,19 wt.h. modified lignosulfonate 2-5 times (examples 2-4). The introduction of the lignosulfonates in the amount of less than 2.5 wt.h. not enough to obtain a given level of formaldehyde emission (example 1). A significant introduction of modified lignosulfonate leads to a decrease in strength of the foams (example 5), which is probably explained by the increase in the setting time of the composition. Introduction urea in amount less than 3 wt.h. 10 wt.h. lignosulfonate is not enough to effectively reduce formaldehyde emission (example 6), at the same time, the increase in the content of urea to 7 wt.h. 10 wt.h. lignosulfonate (example 9) leads to the decrease of the strength of characterature foam (PL.3) and, as a consequence leads to a decrease in their durability. Thus, the above table. 3 the results of the test foams show that the use of the composition-modified urea lignosulfonate significantly reduces the toxicity of the foam without changing their strength. 1. Composition to obtain a foam, including urea-formaldehyde resin and a blowing agent containing surfactant, phosphoric acid and water, characterized in that it further comprises resorcinol and lignosulfonates, pre-modified with urea in an amount of 3 to 6 wt.h. 10 wt.h. liquid lignosulfonate, for 0.5 to 2.5 hours, 30o60oWith the following ratio of components, wt. h Urea-formaldehyde resin 37,31 47,48 Modified lignosulfonates 2,47 12,19 Resorcinol 0,05 0,50 Surfactant 1,50 2,50 Phosphoric acid 1,50 2,50 Water 45,00 47,00 2. The method of producing foam by mixing and foaming composition comprising urea-formaldehyde resin and a blowing agent containing surfactant, phosphoric acid and water in the compressed during the
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