CN104725594A - Inert foamed cotton with high damping property and preparation method of inert foamed cotton - Google Patents
Inert foamed cotton with high damping property and preparation method of inert foamed cotton Download PDFInfo
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- CN104725594A CN104725594A CN201410391989.3A CN201410391989A CN104725594A CN 104725594 A CN104725594 A CN 104725594A CN 201410391989 A CN201410391989 A CN 201410391989A CN 104725594 A CN104725594 A CN 104725594A
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Abstract
The invention discloses inert foamed cotton with high damping property and a preparation method of the inert foamed cotton. The inert foamed cotton comprises the following raw materials in parts by mass: 70-120 parts of isocyanate, 0.1-10 parts of polyether polyol, 0.1-5 parts of a catalyst, 0.4-8 parts of a foaming agent, 0.6-2.4 parts of a foam finishing agent and 5-15 parts of a flame retardant. By optimizing the addition amounts of isocyanate, polyether polyol, the catalyst, the foaming agent and the foam finishing agent, the inert foamed cotton can be relatively high in damping property; due to addition of the flame retardant, the flame retardancy efficiency of the foamed cotton can be greatly improved; the inert foamed cotton can be used in the automobile industry, and kinetic energy generated from resonance caused when a motor is operated at a high speed can be absorbed, so that the resonance can be eliminated, and equipment can operate stably and rapidly.
Description
Technical field
The present invention relates to polyurethane foam technical field, particularly relate to inertia foam of a kind of high damping property and preparation method thereof.
Background technology
Inertia foam has compared with the chemically stable material such as highly oxidation resistant, acid-alkali-corrosive-resisting under referring to normal temperature and pressure, be relative concept with active material.Inertia foam is divided into PU foam, PS foam, EVA, PE, SBR or EPDM etc. according to the material kind difference of foamed cotton.Polyurethane foam has the advantages such as good chemical resistance and is widely used in, in the industries such as weaving, furniture, building, packaging, electronics, becoming a kind of very important people's livelihood and Industrial materials due to it.Diisocyanate cpd and polyvalent alcohol (polyol) are generally reacted the polymkeric substance generated by polyurethane foam, then the foam material formed after foaming and slaking reaction.
The flourish of automotive industry proposes new requirement to automobile product material.The foam material of urethane is because the flexible application of its uniqueness is in the damping part of the engine of automobile.The inadequate rationality of damping property of the inertia foam of the urethane in prior art in automobile product, the foam material that directly affects urethane widelys popularize application in automotive industry.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of inertia foam, and this inertia foam has higher resistance to damping property.
An inertia foam for high damping property, its raw material comprises 70 ~ 120 parts of isocyanic ester, 0.1 ~ 10 part of polyether glycol, 0.1 ~ 5 part of catalyzer, 0.4 ~ 8 part of whipping agent, 0.6 ~ 2.4 part of surfactant and 5 ~ 15 parts of fire retardants according to mass parts.The mass parts of such as isocyanic ester can be 70 parts, 75 parts, 80 parts, 90 parts, 110 parts, 115 parts, 118 parts, 119 parts or 120 parts; The mass parts of polyether glycol can be 0.1 part, 0.2 part, 0.5 part, 1 part, 2 parts, 5 parts, 8 parts, 9 parts, 9.5 parts, 9.8 parts, 9.9 parts or 10 parts; The mass parts of catalyzer can be 0.1 part, 0.5 part, 1 part, 2 parts, 2.5 parts, 3 parts, 4 parts, 4.5 parts, 4.7 parts, 4.9 parts or 5 parts; The mass parts of whipping agent can be 0.4 part, 0.7 part, 1 part, 2 parts, 4 parts, 4.2 parts, 5 parts, 7 parts, 7.5 parts, 7.8 parts, 7.9 parts or 8 parts; The quality of surfactant can be 0.6 part, 0.6 part, 1 part, 1.5 parts, 2 parts, 2.2 parts or 2.4 parts; The quality of fire retardant can be 5 parts, 6 parts, 8 parts, 10 parts, 13 parts, 14 parts, 14.5 parts or 15 parts.
Isocyanic ester can be aromatic series fat isocyanic ester and fat race isocyanic ester, is preferably fat race isocyanic ester.Because fat race isocyanic ester is not containing aromatic series, thus the weathering resistance avoiding aromatic functional groups is not good and be easy to oxidized cracking, after making polyurethane foam cotton material use for some time under the environment or UV-irradiation of high humidity, high temperature, the carcinogenic substances such as easy generation tolylene diamine or two amido ditanes, because including the chromophoric group of conjugated double bond in the carcinogenic substance produced, cause polyurethane foam cotton material generation etiolation.Aliphatic isocyanates can be HMDI, isophorone diisocyanate, the one in hexamethylene diisocyanate, hydrogenation of benzene dimethylene diisocyanate or at least two kinds.Aliphatic isocyanates, more preferably HMDI.4,4 '-dicyclohexyl methane diisocyanate has the structure of dicyclohexyl, anti-yellowing polyurethane foam material obtained after utilizing this kind of aliphatic isocyanates and polyether polyol mixtures to react can possess more excellent elasticity and intensity, thus can be conducive to preparing the polyurethane foam with low resilience characteristic and memory function.。
Polyether glycol is selected as non-fully primary hydroxyl based polyether polyol.What deserves to be explained is, " non-fully primary hydroxyl polyether glycol " is relative to the concept of " the light based polyether polyol of full uncle "." the light based polyether polyol of full uncle " refers to that all terminal hydroxy group comprised in a compound are all primary hydroxyl, that is, the light base of all ends is all connected on primary carbon atom, and is not attached on secondary carbon(atom).In this polyether polyol mixtures, primary hydroxyl total amount accounts for the terminal hydroxy group total amount 70at% to 95at% of overall polyether polyol mixtures, more preferably 75at% to 85at%.Compared to secondary hydroxyl polyether glycol, chemical reactivity due to primary hydroxyl polyether glycol is higher and steric restriction is less, by primary hydroxyl overall control in polyether polyol mixtures in suitable scope, significantly can improve the polymerisation reactivity between polyether polyol mixtures and aliphatic isocyanates, enable aliphatic isocyanates directly carry out being polymerized and crosslinking reaction with polyether polyol mixtures and other additive via single stage method.Polyether glycol can be one in propyleneoxide-ethyleneoxide copolyether triol, glycerine-propyleneoxide-ethyleneoxide copolyether triol, TriMethylolPropane(TMP)-propyleneoxide-ethyleneoxide copolyether triol or at least two kinds.The functionality of polyether glycol is 2 or 3, and molecular-weight average is 1500 ~ 3500.
Catalyzer and initiator, can adopt the pink salt catalyzer that this area is conventional, such as two new certain herbaceous plants with big flowers acid tin methides.The present invention is preferably bismuth organic compound.Bismuth organic compound refers to the coordination thing that Bi and organic complexing agent are formed.BiCat8108, BiCat8102 etc. that bismuth organic compound can be produced for U.S. Shepherd.Bismuth organic compound is compared to pink salt catalyzer, and its good catalytic activity, can significantly improve the reactive behavior of aliphatic isocyanates, ensures the transformation efficiency of monomer.
PAPE is as reactive flame retardant.Its hydroxyl contained can scion grafting in the molecular skeleton of urethane, its phosphate group contained is as fire-retardant group.As compared to the mode that urethane resin and fire retardant are directly carried out physical blending, the fire retardant that the present invention directly adds in the preparation of urethane is combined with urethane with chemical bonding, the migration that the fire retardant avoiding the former occurs in resin-phase and the impact of physicals on urethane.PAPE be two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N, N-or tetra methylol season phosphine alkali.
PAPE is as reactive flame retardant.Its hydroxyl contained can scion grafting in the molecular skeleton of urethane, its phosphate group contained is as fire-retardant group.As compared to the mode that urethane resin and fire retardant are directly carried out physical blending, the fire retardant that the present invention directly adds in the preparation of urethane is combined with urethane with chemical bonding, the migration that the fire retardant avoiding the former occurs in resin-phase and the impact of physicals on urethane.PAPE be two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N, N-or tetra methylol season phosphine alkali.
Whipping agent is preferably water.Compared to the chloro-1-fluoroethane (HCFC-141B) of other whipping agent 1,1-bis-, methylene dichloride, more environmental protection.
Surfactant and suds-stabilizing agent, one of its effect makes pore evenly fine and closely woven, when system is in the low-viscosity stage, it make hole wall stablize/pore can grow into the thickness being suitable for perforate, for last perforate creates conditions.Suds-stabilizing agent is preferably dimethyl silicone oil, such as DARCO DC193, DARCO DC5906.Except this, dimethyl silicone oil also has the effect of certain softening foam.
What deserves to be explained is, the raw material of inertia foam of the present invention is except comprising said components, can also according to the actual demand of the performance of product, add the raw material that other this area is conventional, such as linking agent (also referred to as chainextender), the example has glycerol, polyglycerol, ethylene glycol, BDO, Diethylene Glycol, dipropylene glycol, TriMethylolPropane(TMP) (trimethylolpropane), the one of gathering TriMethylolPropane(TMP) or arbitrary combination.Its content can adopt the conventional add-on of this area, is not repeating at this.
The present invention provides a kind of method preparing inertia foam on the other hand, and the inertia foam using the method to prepare has higher damping property.
Prepare the method as above-mentioned inertia foam, it is characterized in that, comprise the following steps:
(1) according to mass parts by comprising the raw material mixing post-foaming of 70 ~ 120 parts of isocyanic ester, 0.1 ~ 10 part of polyether glycol, 0.1 ~ 5 part of catalyzer, 0.4 ~ 8 part of whipping agent, 0.6 ~ 2.4 part of surfactant and 5 ~ 15 parts of fire retardants, obtain foam;
(2) by described foam by first to after carry out successively extruding and trimming, obtain inertia foam.
Wherein, foam described in step (1) and carry out at ambient pressure.
Wherein, foaming described in step (1) can take high temperature to foam, and namely blowing temperature is 100 ~ 120 DEG C, and the time of foaming is 12 ~ 36h.Certainly also can take foaming at normal temp, the temperature namely foamed is 20 ~ 30 DEG C, and the time of foaming is 6 ~ 8 days.
Wherein, mixing described in step (1) adopts mechanical stirring mode to mix
Inertia foam of the present invention, by optimizing the add-on of isocyanic ester, polyether glycol, catalyzer, whipping agent and surfactant, ensure that inertia foam has higher damping property; The fire retardant added greatly improves and carrys out the flame retardant effect of inertia foam.Inertia foam of the present invention is used in automobile industry, the kinetic energy of the resonance produced when Absorbable rod motor runs up, thus plays elimination resonance, makes equipment reach steady high speed motion.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with embodiment.
Embodiment 1
First, 70 parts of isocyanic ester (IPDI), 0.1 part of polyether glycol (propyleneoxide-ethyleneoxide copolyether triol), 0.1 part of catalyzer (BiCat8108), 0.4 part of whipping agent (water), 0.6 part of surfactant (DARCO DC193 dimethyl silicone oil) and 5 parts of fire retardant (N will be comprised according to mass parts, two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N-) raw material after high-speed stirring makes it fully mix under mechanical agitation, to insert in whipping agent in foaming machine at ambient pressure and foam 6 days at 30 DEG C, obtain foam.Then by abundant for foam slaking.Finally, become particulate state after the extruding of employing injection moulding machine being cut, obtain inertia foam.
Embodiment 2
First, 120 parts of isocyanic ester (IPDI), 10 parts of polyether glycols (propyleneoxide-ethyleneoxide copolyether triol), 5 parts of catalyzer (BiCat8108), 8 parts of whipping agents (water), 2.4 parts of surfactants (DARCO DC193 dimethyl silicone oil) and 15 parts of fire retardant (N will be comprised according to mass parts, two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N-) raw material after high-speed stirring makes it fully mix under mechanical agitation, to insert in whipping agent in foaming machine at ambient pressure and foam 8 days at 20 DEG C, obtain foam.Then by abundant for foam slaking.Finally, become particulate state after the extruding of employing injection moulding machine being cut, obtain inertia foam.
Embodiment 3
First, 95 parts of isocyanic ester (IPDI), 5 parts of polyether glycols (propyleneoxide-ethyleneoxide copolyether triol), 2.5 parts of catalyzer (BiCat8108), 4 parts of whipping agents (water), 1.5 parts of surfactants (DARCO DC193 dimethyl silicone oil) and 10 parts of fire retardant (N will be comprised according to mass parts, two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N-) raw material after high-speed stirring makes it fully mix under mechanical agitation, to insert in whipping agent in foaming machine at ambient pressure and foam 7 days at 25 DEG C, obtain foam.Then by abundant for foam slaking.Finally, become particulate state after the extruding of employing injection moulding machine being cut, obtain inertia foam.
Embodiment 4
First, 85 parts of isocyanic ester (IPDI), 4 parts of polyether glycols (propyleneoxide-ethyleneoxide copolyether triol), 1.8 parts of catalyzer (BiCat8108), 3 parts of whipping agents (water), 1 part of surfactant (DARCO DC193 dimethyl silicone oil) and 8 parts of fire retardant (N will be comprised according to mass parts, two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N-) raw material after high-speed stirring makes it fully mix under mechanical agitation, to insert in whipping agent in foaming machine at ambient pressure and the 36h that foams at 100 DEG C, obtain foam.Then by abundant for foam slaking.Finally, become particulate state after the extruding of employing injection moulding machine being cut, obtain inertia foam.
Embodiment 5
First, 110 parts of isocyanic ester (IPDI), 8 parts of polyether glycols (propyleneoxide-ethyleneoxide copolyether triol), 3.5 parts of catalyzer (BiCat8108), 6 parts of whipping agents (water), 2 parts of surfactants (DARCO DC193 dimethyl silicone oil) and 12 parts of fire retardant (N will be comprised according to mass parts, two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N-) raw material after high-speed stirring makes it fully mix under mechanical agitation, to insert in whipping agent in foaming machine at ambient pressure and the 12h that foams at 120 DEG C, obtain foam.Then by abundant for foam slaking.Finally, become particulate state after the extruding of employing injection moulding machine being cut, obtain inertia foam.
Embodiment 6
First, 100 parts of isocyanic ester (IPDI), 6 parts of polyether glycols (propyleneoxide-ethyleneoxide copolyether triol), 2.5 parts of catalyzer (BiCat8108), 4 parts of whipping agents (water), 1.5 parts of surfactants (DARCO DC193 dimethyl silicone oil) and 10 parts of fire retardant (N will be comprised according to mass parts, two (2-hydroxyethyl) the aminomethy-lenephosphonic acids diethyl ester of N-) raw material after high-speed stirring makes it fully mix under mechanical agitation, to insert in whipping agent in foaming machine at ambient pressure and the 24h that foams at 110 DEG C, obtain foam.Then by abundant for foam slaking.Finally, become particulate state after the extruding of employing injection moulding machine being cut, obtain inertia foam.
Polyurethane foam embodiment 1 ~ 6 obtained adopts universal tensile testing machine at room temperature to carry out the test of Static stiffness according to the method described in periodical literature " meaning of rubber shock-absorbing product rigidity and test; Guangdong rubber; the 1st phase in 2006 " respectively, and its test result is as following table:
Table 1
Inertia foam of the present invention has higher damping property, be used in automobile, NB industry, when starting shooting running, due to motor run up time, because of high speed rotating produce air-flow, in starting process, produce resonance effect, when using this TDI, the kinetic energy produced in absorption resonance process can be played, thus play elimination resonance, make equipment reach steady high speed motion.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (10)
1. the inertia foam of a high damping property, it is characterized in that, its raw material comprises 70 ~ 120 parts of isocyanic ester, 0.1 ~ 10 part of polyether glycol, 0.1 ~ 5 part of catalyzer, 0.4 ~ 8 part of whipping agent, 0.6 ~ 2.4 part of surfactant and 5 ~ 15 parts of fire retardants according to mass parts.
2. inertia foam according to claim 1, it is characterized in that, described isocyanic ester is HMDI, isophorone diisocyanate, one in hexamethylene diisocyanate, hydrogenation of benzene dimethylene diisocyanate or at least two kinds.
3. inertia foam according to claim 1, it is characterized in that, described polyether glycol is one in propyleneoxide-ethyleneoxide copolyether triol, glycerine-propyleneoxide-ethyleneoxide copolyether triol, TriMethylolPropane(TMP)-propyleneoxide-ethyleneoxide copolyether triol or at least two kinds; The functionality of described polyether glycol is 2 or 3, and molecular-weight average is 1500 ~ 3500.
4. inertia foam according to claim 1, is characterized in that, described whipping agent is water, and described surfactant is dimethyl silicone oil.
5. inertia foam according to claim 1, is characterized in that, described catalyzer is bismuth organic compound, and described fire retardant is PAPE.
6. prepare a method for inertia foam as claimed in claim 1, it is characterized in that, comprise the following steps:
(1) according to mass parts by comprising the raw material mixing post-foaming of 70 ~ 120 parts of isocyanic ester, 0.1 ~ 10 part of polyether glycol, 0.1 ~ 5 part of catalyzer, 0.4 ~ 8 part of whipping agent, 0.6 ~ 2.4 part of surfactant and 5 ~ 15 parts of fire retardants, obtain foam;
(2) by described foam by first to after carry out successively extruding and trimming, obtain inertia foam.
7. method according to claim 6, is characterized in that, foams and carry out at ambient pressure described in step (1).
8. method according to claim 7, is characterized in that, described in step (1), the temperature of foaming is 100 ~ 120 DEG C, and the time of foaming is 12 ~ 36h.
9. method according to claim 7, is characterized in that, described in step (1), the temperature of foaming is 20 ~ 30 DEG C, and the time of foaming is 6 ~ 8 days.
10. method according to claim 7, is characterized in that, mixing described in step (1) adopts mechanical stirring mode to mix.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410391989.3A CN104725594A (en) | 2014-08-11 | 2014-08-11 | Inert foamed cotton with high damping property and preparation method of inert foamed cotton |
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| CN201410391989.3A CN104725594A (en) | 2014-08-11 | 2014-08-11 | Inert foamed cotton with high damping property and preparation method of inert foamed cotton |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11239737B2 (en) * | 2018-08-13 | 2022-02-01 | Acc Technologies Pte. Ltd. | Linear vibration motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250320A (en) * | 2008-04-06 | 2008-08-27 | 陈春潮 | Flame-retardant cotton |
| CN102115521A (en) * | 2009-12-31 | 2011-07-06 | 东莞市源聚德实业有限公司 | Inflaming retarding sponge |
| CN103044655A (en) * | 2012-12-18 | 2013-04-17 | 林彬 | Thermoformable fire-proof sponge and preparation method thereof |
| CN103641985A (en) * | 2013-11-13 | 2014-03-19 | 安徽金马海绵有限公司 | Durability flame retardant sponge and production method |
-
2014
- 2014-08-11 CN CN201410391989.3A patent/CN104725594A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101250320A (en) * | 2008-04-06 | 2008-08-27 | 陈春潮 | Flame-retardant cotton |
| CN102115521A (en) * | 2009-12-31 | 2011-07-06 | 东莞市源聚德实业有限公司 | Inflaming retarding sponge |
| CN103044655A (en) * | 2012-12-18 | 2013-04-17 | 林彬 | Thermoformable fire-proof sponge and preparation method thereof |
| CN103641985A (en) * | 2013-11-13 | 2014-03-19 | 安徽金马海绵有限公司 | Durability flame retardant sponge and production method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11239737B2 (en) * | 2018-08-13 | 2022-02-01 | Acc Technologies Pte. Ltd. | Linear vibration motor |
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