JPS62502266A - polyurethane plasticizer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention provides novel plasticizer-containing materials for recycling, encapsulating or reusing electrical cables or equipment. as a grease-compatible and non-leaching material for use in sealing Can it be formulated? Concerning liuretandal.

Extending polymers such as polyurethanes is well known in the art. One This expanded material is then formulated for use in the desired application. A typical extender is mineral oil, and mineral oil extender polyurethane 7 (m1ne ral oil extended polyurethane) is a US patent No. 3.714. +10 and 3,747.037.

Mineral oil enriched polyurethane is used for the reclaration of insulated electrical equipment. It is also recognized to be useful for protection. The main device is 1, for example, fluidity. It can be underground telephone cables exposed to impurities. These impurities can be removed from such equipment. ・Water that has entered the internal free space can significantly degrade the electrical and mechanical properties of For removal, the protective material is pressed into the cape. The rupture material should be distributed appropriately. The material is pressed in at a low viscosity to achieve high viscosity, and the material is cured in situ to a high viscosity.

The cured material acts as a hydrophobic barrier layer against subsequent water ingress. In applications, the protective material is used as an encapsulant to seal sections of the cable. Can be used. In this method.

From the outset, the material serves to prevent the ingress of flowable impurities.

A mineral oil extended polyurethane useful for this purpose is disclosed in U.S. Reissue Patent No. RE 30,321. No. @This patent describes the use of specific polyurethanes and coupling agents. The prepared cured and crosslinked mineral oil extended polyurethane is defined as a two-coupling agent. It is necessary to make the mineral oil compatible with the crosslinkable urethane elastomer.

However, these mineral oil extended polyurethane systems have drawbacks, and these The drawback is U.S. Patent No. 4. +68.258. In this patent, the initial For mineral oil extended polyurethanes, the mineral oil is used in cables or for reclamation or encapsulation. It is stated that the oil will migrate to the grease present in the equipment. This group Leases are more often present in newer insulated electrical equipment. This transition An oily film is formed at the release interface, and this film formation prevents polyurethane from being recycled. Raw and encapsulated effects are reduced. In order to eliminate this drawback, the above-mentioned U.S. patent Polyurethane that relies on the presence of polydiene moieties in the polyurethane structure -Mineral oil-coupling agent formulations are particularly defined. Mineral oil remains as a bulking agent and as stated in the above patent (with some aromatic carbon content in mineral oil) Preferably, it is included.

Conventional polyurethane compositions are primarily High casting strength or aging hardness ardness) or because of its opaque or cloudy color This is also known to be difficult to re-enter. making it difficult to cut or remove hardened material from the area being repaired. are doing. In some applications, the opaque color may indicate the exact area that the worker will be repairing again. Therefore, polyurethane is transparent and soft. It is preferable that @ Polyurethane is easily re-entered in either transparent or opaque products. The ability to install a second splice in the same zone as the previously repaired or encapsulated zone repair or enclosure of insulated electrical or telephone cables where it is necessary to make It is important in In addition, the original repair or packaging may have been done improperly and You may need to perform these steps again. For these reasons, these The first important consideration regarding the physical properties of glue is that it has relatively low tear strength and hardness. The purpose of the present invention is to provide a polyurethane that is Furthermore, these materials are It is highly desirable to retain these properties.

Vegetable oils that meet some of these requirements and provide inherently reentrant glues Extended polyurethanes are disclosed in US Pat. No. 4,375,521. This special A three-component botanical system consisting of a specific polyurethane, a vegetable oil and a specific filler is used. Oil-extended polyurethanes are disclosed for use in reclamation and encapsulation applications. death However, these vegetable oil extender formulations usually give an opaque gel and It is important to note that the Tendency to cause cracking or stress in polycarnate connectors. Furthermore, These glue formulations harden over time making re-entry difficult.

U.S. Pat. No. 4,355,130 describes a polyalpha product that solves stress cracking problems. Polyurethane-extended polyurethanes are disclosed and such polyalphaolefins Extended polyurethanes include certain polyurethanes, certain polyalphaolefins, For dosages and those intended for further regeneration and encapsulation, specific ester It consists of a coupling agent. The coupling agent is used to control the "leaching" of the bulking agent from the cured material. -spewing -) is required to make the formulation compatible. Ru.

Disclosure of invention It is therefore an object of the invention to provide a bulking port with improved compatibility with cable grease. These compositions are also suitable for cable recycling. Usability as raw feces pound and optical fiber for telecommunications industry -optic) has utility as a splice encapsulating agent.

Another purpose is to provide polyurethane r/L formulations defined according to specific end uses. Use of the plasticizer of the present invention as an extender for polyurethane The resulting system can be used for the regeneration and regeneration of electrical or telecommunication cables. or general I urethane elastomer for numerous end uses including It was found that the material was well suited for use as a material. Such plasticized polyurethane dal is Typically between about 8.3 and 8.9 or between about 9.1 and 9.7 with certain polyurethane components The total solubility between /J? tatal 5olubility par ameter) and a plasticizer compound with The polyuretangle of the present invention has excellent compatibility of its components, wide viscosity range, and good have electrical properties and will not cause cracks or stress on the I recarbonate connector. These polyurethanes are characterized by no tendency to It is significantly improved over conventional mineral oil extended systems in the areas of performance and electrical properties.

When used in the field of regeneration and encapsulation, these polyurethane tangles provide excellent These polyurethane dals provide superior performance characteristics when initially introduced into the cable. The low viscosity p required for hold for a sufficient time to fill the entire length of the free space and fully form the containment cover. have the ability to These polyuretangles also have the ability to displace flowable impurities. and/or to repel plasticizers by curing in situ. It has the ability to form a urethane structure that does not bleed or expel. do. This glue structure is stiff enough to provide an excellent protective barrier layer However, it can be easily disconnected and removed if re-entry is required. 0 polyurethane is non-corrosive to copper healds and commonly used polycarb. Compatible with other polymeric materials used in the manufacture of connectors and capes. be. This system is also convenient to handle and apply in this field.

The polyurethane used in these formulations is usually.

Produced by the reaction of a stoichiometric amount of an isocyanate compound with a polyol be done. Plasticizers can be added to any component before reacting. In a preferred embodiment, the isocyanate component is free from excess incyanate compound. Polyisomers obtained by reacting polyols with polyols by methods well known in this field. It is a cyanate prepolymer. A certain proportion of plasticizer is added to the polyisocyanate prepolymer. reamer and then react the mixture with the polyol containing the remaining proportion of plasticizer. Let them form a guru.

polyisocyanate prepolymers or by direct reaction with polyols. Isocyanate compounds of the present invention that can be used to form urethane include , contains two or more NCO groups per molecule, and contains 2 or more NCO groups per molecule; Any organic polyisocyanate that does not contain other substituents that can react with the Can be used - This incyanate compound includes aliphatic polyisocyanates, alicyclic polyisocyanates, ? Diisocyanates or aromatic polyinsyanates would be included. mosquito A typical polyisocyanate compound is 3-isocyanatomethyl-3 1515-J methyl-cycloisocyane) (H’DI), tolu ene diisocyanate) ('rD[), 4,4-diphenylmethane diisocyane Anne) (MDI),? Rimethylene? Riphenyl isocyanate, 1.5- 7talene diisocyanate, phenylene diisocyanate, 4.4-mer Diy bis(cyclohexyl isocyanate), hexamethylene diiso Cyanate, hexamethylene diisocyanate biuret, 2,4.4 -) Methylene diisocyanate to remethyl and combinations and reactions thereof related groups, which may be substituted with other organic or inorganic groups without detrimental effects Aromatic, aliphatic and cycloaliphatic polyisocyanates may be included. The term “aliphatic” as used herein refers to carbon chains that are substantially non-aromatic in nature. includes. They are saturated or unsaturated, unbranched or branched in their shape. Chain-like.

or a position that can be annular and that does not have a detrimental effect on migration. May contain substituents. 7M of fat Group isocyanates usually have an equivalent weight of 60 to +60 and an equivalent weight of 1 to 150 at 25C. It has a viscosity of 0 centipoise. An example of a liquid long-chain aliphatic isocyanate is P These include decyl diisocyanate and tridecyl diisocyanate. polymethi Ren polyphenyl isocyanate is available from Mobay Chemicals. Nji! -# (Mondur) Commercially available under the trade name MR8(7) . Two preferred compounds.

Mondur MR8 and MR8-10 are dark brown liquids with slight aromatics. be. In particular, Mondur MR8 has an NCO content of 31.5-, an amine of 133- equivalent.

7M It has a viscosity of 200 mPa-a and a density of 1.2497 cc at 25 C. , while Mondur MR8-10 has an NCO content of 31.9% and an amino acid content of 132%. The viscosity of gornPa-s and approximately 1.24 g/c at the equivalent weight of 2 sTMc It has a density of c. Is diphenylenemethane diisocyanate Upj　ohn? Isonate (l5onate) I43L trade name, also Mob It is commercially available in stabilized liquid form under the trade name Seven Joules CD from In particular, Isonate 143L has an NGO content of 29.2% by weight and an ionic content of +44%. cyanate equivalent, acid number below 0.030 and 35ep8 at 25C is a light yellow modified diphenylmethane diisocyanate with a viscosity of , Monjoor CD has an NGO content of 29.3 fold i- and 2 sTMc. A light yellow color with a viscosity of less than +00 mpa-s! 4.4'-diphenylmet Tan diisocyanate. Dirty polyarylene polyinsyanate It is commercially available under the trade name Upjohn et al. PAPI (7), and its representative The one is PAPI94. pAPI 94 contains approximately 98 4.4'-isomers. is a polymeric methylene diisocyanate with the remaining 92% being the 2,4'-isomer. can be. PAPI’? 4) It has an NGO content of about 2.

Polyols suitable for reaction with organic polyisocyanates include castor oil, Polyether polyols, polyester-liols, hydroxy-containing monomers of dienes German polymers, hydroxyl-containing copolymers of dienes, amine-based polyols and polymers Mention may be made of polyols and combinations thereof. Such polyols usually contain 1 to 30 6000 M volume and a viscosity of 1 to 20,000 centipoise at 25 to 60 C ・Substances with higher equivalent weights, i.e. those with equivalent weights of about 250 or more Generally preferred.

One of the polyols that can be used to make these plasticized polyurethane tangles is castor. oil, a compound consisting primarily of lysircin, the glyceride of ricinoleic acid It is a thing. Typical castor oil is approximately 70% pure glyceryl trilysyllate and approximately 30-glyceryl dilysyl-tomonooleate or monolylate Comprised of a mixture, available as DB, oil from CBa Chetn, Inc. be done.

Suitable polyether polyols include polyether polyols with a small number (both consisting of two carbon atoms). Examples include aliphatic alkylene glycol polymers having alkylene units. . Examples of these aliphatic alkylene gellicol polymers are polio-bovine dipropylene glycol. cole and polytetramethylene ether glycol. Also, trifunctionalization Reaction of compounds such as trimethylol zolone/4' with propylene oxide Products may also be used. A typical polyether polyol is 1Jnion Car. It can be obtained from bide under the name Niatsuk, c (N1ax) PPG-425. Ru. In particular, Niatsis PPG-425, a combination of conventional polyol and vinyl monomer. Copolymer, 263M with an average hydroxyl number of 0.05 and an acid number of 80 centipoints at 25C. It has a viscosity of

The general term polyether polyol also refers to amine-based polyol or high Typical amine pastes containing polymers often called molecular polyols For Riolu, use a sweet potato such as Niatsis BDg-400 or FAF-529. Sugar-amine noliol or Niatsis LA-475 or LA-700 amine-polyols, all of which include Union Carbide It can be obtained from. The absence of free amino hydrogen in any of these compounds Known to those skilled in the art.

Hydroxyl-containing homopolymers of dienes or hydroxyl-containing copolymers of dienes are unsubstituted, 2-substituted or 2,3-disubstituted 1,3-diene having up to about 12 carbon atoms; It is made from dienes including dienes. Preferably, the diene contains up to about 6 carbon atoms. and the substituents at the 2- and/or 3-positions contain hydrogen, from about 1 to about 4 Alkyl groups, substituted aryl, unsubstituted aryl, having carbon atoms up to - etc. Typical examples of such dienes are 1,3-butadiene and isoprene. Chlorozolene, 2-cyano-1,3-butadiene, 2,3-dimethyl-1 , 2-butadiene, etc. Preferred dienes are 1,3-butadiene and isopropylene. It's Ren. Has a hydroxyl end group. N Liptadiene is ARCOChe micala Tarabo! It is available under the name j-BD R-45HT. In particular, poly -BD R45HT has a molecular weight of about 2800, a polymerization degree of 50, and a molecular weight of about 2.4 to 2.6. Hydroxyl functionality, hydroxyl number of 46.6 r), 0.83 hydroxyl value and O with an iodine value of 398 N, N-bis(2-hydroxyzorobyl)aniline and N, N, N', N ’-tetrakis(2-hydroxyzorobyl)ethylenediamine Aromatic and aliphatic diamines can form amine-paced polyols. teenager A typical amine pace polyol is Isonol (l5onol) too name. available from Upjohn with a molecular weight of 209, a hydroxyl of 534 Value, 7M of 104.5 equivalent weight, an average functionality of 2.0 and a viscosity of 1450 at 50C. A typical aliphatic amine-based polyol is a black liquid teriol. This is obtained from BFSF't) under the name Quadrol. Hydroxyl group of 6.4m, 2 (tertiary nitrogen! atom of L!I, hydroxyl value of 770 and a viscous liquid poly with a viscosity of 53,000 cps at 25C. It's all.

, polymeric polyols are commonly described as polyols with stable dispersions of vinyl polymers. can be done. For example, U.S. Pat. No. 4, IO 2,236 describes Such polyols with polymers are disclosed: Another representative polyol is It is obtained from Union Carbide under the name Niattsis 24-32. Special Niatsis 24-32. Copolymers of conventional polyols and vinyl monomers are with an average hydroxyl number of 32 and a viscosity of 1300 centipoise at 25 C. have

Plasticizer compounds that may be used in the present invention include about 8.3 to 8.9 or about 9.1 to 9.7 total solubility parameter Compounds or mixtures of compounds having r) are included. greater than 9.7 Compounds with solubility parameters that are too volatile to be used in gluc formulations On the other hand, compounds with a solubility z4 parameter of 8.3 or less are Not compatible with reaction products.

Suitable plasticizer compounds include heptalate or adipate compounds having about 4 to 13 carbon atoms. esters such as The goal is to have a suitable solubility/lamameter. Four layers of solubility in the range described above. -glyceryl tri(acetyl lysylate) and similar compounds with Certain synthetic lysylate compounds are also useful, such as A wide range of cable fillers or It is preferable because it has high compatibility with oil and grease.・According to the present invention, Particularly preferred compounds that can be used as plasticizers are shown in Table 1 below. Ditridecyl adipate 8/9 Jiundecyl Futale) 9.12 Diisodecyl phthalate 9/I5 Glyceryl tri(acetyl lysylny)) 9.3 dibutyl phthalate 9.7 Specific solubility parameters were determined by weight gain tests and conductor draw ( Determined by conductor pull out test. especially , total solubility and lamina resulting in weight loss or where the conductor cable is easily pulled out. Compounds having a tera are unsatisfactory for use in the present invention.

Also, without departing from the teaching of the present invention of keeping the total solubility within a critical range. A plasticizer, which can be used in combination with one or more of the above plasticizers. Compound solubility meter is POLYMERENGINEERING 5C IENCE, Vow, 14. A2, February 1974.

°AMetho by H, F, pedors Ic, published on page g147-54 d For Estimating Both the Solubility Parameters and Mo1ar Volumes of Liqu It is measured by the method described in the article entitled ids″″. This article is written in detail As described in the above article with reference to @25 The total solubility and lame parameter for liquids at °C are given by Equation 28 as follows: In particular, it can be calculated: In the above formula, ei and Vi are evaporation energy and molar capacity, respectively The contribution of additional atoms and groups for p contribution).

Based on a large amount of data on simple liquids, at a temperature of 25°C These applicable contribution rates are shown in Table 5 of the article. Thus, the task Total solubility for the liquid organic compound of interest/! To calculate the parameter, It is only necessary to know the chemical structure of the compound.

Therefore, as used in this specification, the term "total solubility parameter" Evaporation energy and molar capacity given in Table 5 of the Edors article Means the solubility of the compound at 25°C calculated from the value @The values shown in Table 1 of this specification were calculated using the above method for the above compound. Regarding the weight change test with total solubility/grammeter, encountered in telecommunication cables. There may be different types that can be used. The most common one is FLEX GEL) cable filler. FlexGlu is a water-resistant cable for electrical cables. Western Electric Co, In for Bull Filling Compounds c is a registered trademark. Another cable is oil jie! J-(PJ) or poly May contain ethylene modified petroleum sherry (PEPJ). PEPJ is from PJ It is a material with a high melting point. Lysylates are used for all types of cable fillers. It should be noted that it has a wider range of compatibility than the plasticizer of For use of these plasticizer compounds in agents, a solubility of about 9.1 to 9.7 for applications where reentrancy is of paramount importance. It should be noted that a clear and transparent gel is provided which is desirable for Those compounds with solubility parameters between 8.3 and 8.9 are Gives some degree of opacity 1 Normally, solubility 1? The lower the value of the parameter, the more The turbidity or opacity inside increases. However, the polyurethane according to the invention The glue is all soft.

It has low tear strength and these properties are retained for long periods of time, making it possible to create the desired reentrant core. A link/ground will be provided.

Furthermore, the plasticizer compounds suitable according to the invention are low viscosity liquids at room temperature. It should be noted that

The polyurethane of the present invention typically contains about 10 to 90 parts by weight of polyurethane and It therefore consists of about 90-10 parts by weight of plasticizer. 10 parts by weight or less of polyurethane When used, the resulting glue has essentially no tear strength, whereas , when less than 10 parts by weight of plasticizer was used, the resulting formulation improved properties may not be provided - particularly preferred for use in reclamation or encapsulation The desired concentration is about 30-40 parts by weight of polyurethane reaction product and about 70-60 parts by weight. and a plasticizer.

If a high solids grease compatible formulation is desired, the relative proportions should be about 90-50% by weight. parts of polyurethane and about 10 to 50 parts by weight of plasticizer. According to the plasticized polyurethane of the present invention, it can be used as a reinforcing or inert filler in this field. Finely divided solid fillers commonly used in the manufacturing process may be used. Such solid filling The use of agents primarily applies to non-reentrant polyurethanes. conventional filler Carbon black, as-7-artene, silica, silica-alumina, hydrated silica For zinc oxide, magnesium carbonate, clay, talc, and recycled crushed rubber, and various mineral fillers known in the art. The solid filler is poly Amounts up to about 50% by weight of urethane may be used.

The formulations of the invention are prepared at the site of application by mixing the resin system and hardener system. It is preferable. Depending on the desired application, the resin and hardener may be mixed in stoichiometric amounts. Use as much as you need. What are the resin components? Reincyanate or polyurethane pre Consists of all or part of a polymer and a plasticizer. The curing agent component is j? IJO and the remainder of the plasticizer, if applicable. catalyst and case Additives such as bactericides, pigments, antioxidants, moisture scavengers, etc. are usually added to the curing agent. added to ingredients. Catalysts are well known to those skilled in the art and include, for example, about 0.1 of the curing agent component. Heavy metals may be used in amounts of % by weight.

As noted, the polyuretangles of the present invention have the desired properties for a range of applications. The primary emphasis is on re-entrant enclosures for insulated electrical equipment. ◎Initially, these materials were sufficiently fluid. 1 can be introduced into a mold that encloses the core of the cable or a part of the cable, and It can retain its fluidity long enough to fill all of the internal free space.

The term “reclamation” refers to the use of the I-uretandal compositions of the present invention in damaged telecommunication cables or or injected into electrical cables to eliminate fluid impurities and restore cables to their original condition. It is used to include the case of reverting to .

The term "encapsulation" refers to the use of the polyurethane resin of the present invention in cable splices or connections. Means to be used for sealing ・In this device, @ gas connection be installed on existing cables and provided with closures of polyethylene or similar material. around the connection and apply the glue composition to the space between the closure and the cable. where the glue composition expands and cures to form a moisture-resistant seal. let

In its regeneration action, the polyurethane absorbs liquid from the free space within the cable. This will eliminate the permeate.

When used for encapsulation, the cable is sheathed with polyethylene or other suitable material. Apply polyurethane to the final external dimensions of the glue around the perimeter of the area to be repaired. It acts as a mold for (inserted inside the sheath. , to form a stable glue within a reasonable amount of time and to water or other fluid substances or impurities. Providing stickers for If reentrancy is desired, the polyurethane selected will be sufficiently soft and Provides a glue that is easily removed. These reentrant encapsulation and reclamation compositions The insulation properties of materials are highly improved, especially regarding the dielectric loss tangent and volume resistivity of the material. It will be done. Furthermore, there is no leaching of the components used (and the materials used in the construction of the cable). Excellent compatibility with materials and polycarbonate connectors.

Furthermore, the plasticized polyurethane of the present invention can be used as a rigid volumetric (permanent) encapsulant and as a permanent encapsulant. Can be used in general polyurethane elastomer applications.

Example The scope of the invention is further described for the sole purpose of illustrating preferred embodiments of the invention. However, the scope of the present invention shall not be limited in any sense. It will be described in relation to the embodiments below, which should not be constructed as such. these fruits In the examples, all parts given are 1 weight unless otherwise specified. The following treatment is for use as a reentrant rejuvenating agent or mounting medium. A representative plasticizer/polyurethandal system of the invention is illustrated.

Resin type ABCD Castor oil (2) 2.3 - 2.3 1.8 diundecyl phthalate + 2.9 76.2 - 45.2 Ditridecyl adipate - -12,9- Castor oil (2) 2.9 5.8 2.9 L, S diundecyl 7 tala) 65.1 62.2 65.1 34.8fil Upjohn 73h et al. P API 90++2+ DB oil from Cas Chem, Inc. +31 Arco, Chemicals: Q> et al.'s I Lee BD R-45-HT Resin systems A, B, C and D are mixed with hardener systems E, F%G and H, respectively. The following polyuretangle was prepared by: After curing, each of these compositions They are soft, transparent glues that can be electroconducted if a reentrant formulation is desired. Extremely suitable for use in applications such as recycling or encapsulating telecommunication cables Prepare the formulation below by mixing the ingredients below and curing the mixture. Manufactured.

Polymethylene polyphenyl isocyanate (115,05,s 4.3 castor Sea oil +21 - 5.3 - Polyptadiene X31 45.0 29.2-dito with hydroxyl end groups Lidecyl Adipate SO, O--Diisodecyl Fukure) -60,06 5,0 polyoxypropylene diol (41--30,7 (11Upjohn 13h et al. PAPI90+ (2) DB oil from Coo Cero, Inc. 131 Arco Chemicals 2h et al. Poly-〇D　R45-HT (4) PPG-2025 from Union Carbide These formulations also Also suitable for re-entrant repair applications. It was a soft and transparent glue.

Example 3 The following polymer system was prepared: Polymethylene polyphenyl isocyanate il+ 13.6 castor oil (2 ) 13.3 Polybutadiene with hydroxyl end groups 131 73.1 (II Upj ohn; B> et al.'s PAPI 901121 Caa Che+n, Inc. Poly-BD R4 from RCO Chemicals with DB oil (3) 5-HT Then 65 parts of this polymer system were mixed with 35 parts of the plasticizer described below to form the Mizuko polyurethane formulation prepared with symbol O Dioctyl adipate M Tsuu/Decile 7 Tallate N Dioctyl adipate: 6-7 mixture of mineral oil 0 diisodecyl phthalate: A 2:1 mixture of mineral oil P-dioctyl adipate is outside the scope of this invention9,05 It has a total solubility/grammeter of . Therefore, this is in Formulation M as a comparative example. The mineral oil fillers in @formulations O and P used also contained plasticizer substances which are outside the scope of the present invention. A comparative example was used to illustrate.

Determining the compatibility of the above ffi formulations with respect to grease compatibility? After c, pour the preparation Rexglu: Cured on cable filler and measured the weight change of the formulation after curing. Ta. Compatible formulations show an increase in weight, indicating that the grease has been absorbed into the formulation. It shows.

On the other hand, incompatible formulations exhibit weight loss, which is due to leaching of bulking agents or plasticizers from the glue. It shows that it has come out or separated.

As another measure of grease compatibility, the 11 part conductor is The filler was coated and then encapsulated with the above formulation. After curing the formulation, the conductor is coated with polyurethane. Measure the force required to separate the zero conductor from the polyurethane, and 2nd surface pressure water O Table 2: Test results Formulation Weight change Pulling force (pounds) From the table above, approximately 9.1 to 9.7 or approx. g73~g, 9 total dissolved Pi 4 degrees J? Plasticizers with lameter are compatible with grease. In contrast, other compounds with solubility and lameness are It is clear that they are not compatible.

The following formulations were prepared: Components Department Polymethylene borifhenyl isocyanate) (114,8 Castor oil (2) 4 ・6 Polybutadiene with hydroxyl end groups 131 25.6 glyceryl pApf 901 from ly(acetyl lysylate)65fllUpjohn (2) DB oil +31 Arco C from Cas Chem, Inc @s etc. Poly-BD R45-HT from hemicala and then described above for this formulation. We conducted weight change tests and conductor/pulling tests. The results are as follows. Weight change S for various cable fillers: Flex Glue +5.5 PEPJ + 1.6 PJ +0.5 Covered conductor pullout near, 0 lbs. As a result, sylate plasticizers are compatible with a variety of commonly encountered fillers or greases. It has been shown to provide the formulation with the highest degree of compatibility with Disclosed above Other silicates with total solubility/base meter in the above range will work similarly. The invention disclosed herein is believed to be sufficient to achieve the above objects. It is understood that various modifications and embodiments may be devised by those skilled in the art. and the appended claims are within the spirit and scope of the invention. It is intended to protect all such changes and aspects as mouth international investigation report

Claims (1)

[Claims] Having thus described our invention, we claim that it is novel and that we secure it by patent. It is clear what you want: 1. Approximately 10 to 90 weight of liquid reaction product of organic polyisocyanate and polyol and a total solubility parameter of about 8.3 to 8.9 or about 9.1 to 9.7. about 90 to 10 parts by weight of an ester or polysylate plasticizer compound. Urethane gel composition. 2. Contains about 30 to 40 parts by weight of a liquid reaction product and about 40 to 30 parts by weight of a plasticizer compound. The composition according to claim 1, containing parts by weight. 3. Isocyanate compounds include aliphatic, cycloaliphatic and aromatic polyisocyanates. The composition according to claim 1, wherein the composition is selected from the group consisting of: 4. The isocyanate compound is polymethylene polyphenyl isocyanate or 4. The composition of claim 3, which is ethylene diisocyanate. 5. Organic polyisocyanate is produced by combining excess polyisocyanate compound and polyol. The claimed polyisocyanate prepolymer prepared by the reaction of The composition according to item 1. 6. Polyols include castor oil, polyether polyols, and hydroxyl-containing dienes. homopolymers, hydroxyl-containing copolymers of dienes, amine-based polyols, Claims selected from the group consisting of polymeric polyols and mixtures thereof. The composition according to item 1. 7. It is claimed that the polyol is polybutadiene with hydroxyl end groups. The composition according to item 6. 8. Ester plasticizer compounds include ditridecyl adipate, diisodecyl phthalate , diisodecyl phthalate or dibutyl phthalate. Composition according to item 1. 9. Lysylate plasticizer compound is glyceryl tri(acetyl lysylate) A composition according to claim 1. 10. The composition according to claim 1, wherein the equivalent weight of the polyol is 250 or more. thing. 11. Contains 50 to 90 parts by weight of a liquid reaction product and approximately 50 to 10 parts by weight of a plasticizer compound. The composition according to claim 1, containing parts by weight. 12. In a closed space surrounding the part of the device to be protected, claim 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11. Peripheral of an insulated electrical device, characterized in that the composition is introduced and the composition is cured. method of forming a liquid-impermeable protective seal around the enclosure. 13. Claim 12, wherein the composition is used to encapsulate the device. the method of. 14. Claim 12, wherein the composition is used to regenerate the device. Method. 15. A large number of insulated wire conductors and claims 1, 2, 3, 4, 5, 6, 7, 8 , a cured polyurethane tangle according to one of paragraphs 9, 10 or 11. electrical equipment.