JPH04507111A - Composition for manufacturing seal membrane and its membrane - 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] Composition for manufacturing seal membrane and its membrane Sealing compositions useful for ensuring the adhesion of concrete road joints are already available. It has been reported. This is particularly the case with French patent no. 1539392. The compositions described therein have a viscosity of 107 to 484 cSt at 135°C. (Preferably a straight steamer with a viscosity of 140 to 375 cS at 135°C. non-oxidized asphalt) and has a softening point (ring and ball method) of 30 to 60°C. 10-75% by weight of Phalt; general configuration A-B-A, more specifically poly Block copolymer with tyrene-polybutadiene-polystyrene copolymer from 10 to 35% by weight; aromatic component content of at least 50% by weight (preferably 6% by weight); 9-75% by weight) and a viscosity of 15.5-24 cSt at 99°C. 15-55% by weight: Contains.

The present invention relates to a method for manufacturing sealing membranes, and these sealing membranes can be used as sealing products, filling materials, etc. A reinforcing agent (typically a screen It is in the form of a film or sheet consisting of (lean or grid). After manufacturing, These films or sheets are rolled up and, for example, heat-sealed and Bi/mana is distributed by known processes such as gluing! be done.

The production of these sealing membranes requires appropriate selection of the components of the "sealing product". I need. This sealing product is a “specific bitumen J, SBS copolymer”. It has been found that it is convenient to obtain by mixing certain petroleum Served.

Therefore, the present invention provides a system for manufacturing a sealing membrane as hereinbefore defined. The invention relates to a particular bitumen employed for use in the production of products for rolling.

The particular bitumen that can be used according to the invention is prepared in vacuum by the propane deasphalting process. Hard bitumen with Newtonian properties derived from processing residual liquor in and the following, i.e. The viscosity at 135℃ is 560 to 850 s (or 1 200~1800cSt) and: Softening point by "ring and ball method" is 65-74℃; penetration at 25℃ is 10-20 (1/10 mm); asphaltene content is 20 to 35% by mass ; is characterized by;

These bitumens are obtained by semi-blowing in refineries; The properties of bitumen obtained by straight distillation of the same raw material Table 1 shows the different properties that can be used according to the invention (various crude three types of bitumen (obtained from raw materials) and strained from these same raw materials. Figure 2 shows the physical properties of three corresponding bitumens obtained by t-distillation.

Therefore, block copolymers and certain petroleum Add to

Block copolymers that can be used include thermoplastic homopolymers of styrene and , composed of an alternating series of elastomers obtained by polymerization of conjugated dienes. It is a block copolymer. A preferred block copolymer is polystyrene. Polybutadiene-boristyrene, which is a block copolymer 20 to 40% by mass. Typical copolymers are styrene/butadiene quality The weight ratio is 30/70 and the molecular weight is 250,000 to 300,000 or (toluene). If the viscosity of the solution is 25% by weight of the SBS copolymer in the solution or 20 Pa, s.

Adding certain petroleum to the mixture of bitumen and block copolymer.

This is a fragrant oil and is produced as follows. i.e. refining in the production of mineral oil During the operation, distillation of the reduced crude feedstock in vacuo produces petroleum distillate, known as vacuum distillate. You can get minutes. Said distillate oil is a mixture of mineral oil, aromatic oil, paraffin and wax. Ru. At this stage, the glue refiner uses distillate oil to provide the necessary lubricity to the mineral oil. , from aromatic oil (e.g. by furflor treatment) and then from liquid paraffin or and wax by solvent treatment methods (e.g. by treatment with methyl ethyl ketone) Must be separated sequentially.

The desired compatibility and compatibility of the sealing binder can be determined from the aromatic oils obtained from various vacuum distillate oils. The materials were selected to allow for the provision of physical and physical properties. These oils are 1 The viscosity at 00°C is 43 to 64 cSt, and the flash point is 280°C to 320°C. Table 2 shows the special bitumen and SBS copolymer blends characterized by The typical physical properties of these particular oils that confer compatibility are summarized below.

Due to their raw materials, the selected bitumens can be loaded with various compositions such as aromatic oils. These for SBS copolymers with a certain content, if allowed to have The proportions of the components are adjusted to make the bitumen and copolymer completely compatible. The polymers and asphaltenes present in the mixture must be have enough aromatic oil in the mixture to be decondensed by physical adsorption; Since it is necessary to obtain a colloidal suspension of the The proportion of balm is high.

Therefore, the solution to this problem is that anyone skilled in the art knows that some kind of bitumen A simple compatibility test is possible for certain polymers and aromatic oils. and adjusting the relative proportions of the bitumen and oil mixture. this The test consists of thoroughly mixing the bitumen and the desired amount of polymer, and then Add increasing amounts (e.g. 5.10.20.30 and 40%) of aromatic oil to the compound That's true. The resulting homogeneous mixture was kept at 165°C without stirring and after storage for 5 days. Then, the softening point of samples taken from the lower and upper parts of the mixture is determined. aroma In the absence of oil, there is a notable difference between the softening points of the upper and upper samples. is observed more or less rapidly, and over a certain limited concentration range in the mixture. Aromatic oils eliminate these differences.

Compatibility further refers to unmatched properties in terms of physical and mechanical properties of the membrane. convert to function. As shown by the results in Table 3, the increase in aromatic oil The "ring and ball method" softening point measured before and after storage at 165°C for 5 days is the upper part of the specimen. 35 and the similarity of the softening points measured in the lower part and Concentrate on exactly the optimal ratio of aromatic oils to be converted.

i! with SBS copolymer! Aromatic oil to bitumen to obtain proper compatibility with It is a matter of concern to the person skilled in the art to determine the appropriate ratio at which 15 or 2 must be added. Density of bitumen-oil mixture at reference temperature of 5°C or this mixture if necessary is to measure the surface tension of. In fact, the density and surface tension of the mixture It has been established that this occurs in response to the aromatic compound content in the product. aromatic oil and Feeding the bitumen separately is for the determination of density and produced compatible Once the density of the product is known, one skilled in the art will know how to obtain a seal membrane of satisfactory quality. The ratio of bitumen/oil mixture that needs to be produced can be easily determined. Ru.

In fact, the bitumen, block copolymers and The relative proportions of oil are as follows.

Bitumen: 55-75% by weight SBS copolymer = 8-15% by weight Oil: 15-35% by weight Table 4 relates to binders based on bitumen and SBS elastomer rubber. UEATC(Un,ton Europeennepour1'Agrem en, t Technique dans 1aConstruct 1on) The results presented in this table represent the conditions established by the standards for unaged (new) mixture or in a stove with ventilation at 70 °C. If obtained from a matured mixture that is aged for 6 months, this test , with a thickness of 2 mrn play 1 for the binder and for the final product. The membrane itself was used.

Table 5 lists the products found in the present invention (filler-free binders and sheets). Given the type characteristics, all of these products after ripening are guaranteed to meet UEA and TC standards. to ensure that they are satisfied.

Two examples of products of the invention are described here.

In these two examples: 69% by weight of bitumen A from Table 1. D 11% by weight of Star SBS copolymer; uses 20% by weight of standard B oil ("Binder BJ") in Table 2.

The properties of these (unfilled) binders are listed in Table 6.

Table 7 lists the constants for the properties of binders containing suitable fillers (calcium carbonate). Describe it.

rainbow Bitumen (physical properties) indication A AI that can be used according to the present invention B 81 C Softening point 70 40 66 39 7 Penetration at 25℃ (1/1011+1> 12 200 16 200 11 relative density 15℃ 1.051 1.02g 1.038 1.011 1.05425℃ 1.045 1.022 1.032 1.005 1. Q48 Flashlight open Formula)"C354342337330352 chemical composition in mass% Asphaltene 37.6 16.3 25.0 9.5 34.9 Oil? ,7 27.6 13.5 20.5 16.9 Resin 60.7 56.1 61. 5 70 48.2135” Kinematic viscosity at C cSt 1750 260 117 0 180 2500 designations A, B and C are bituminous oils obtained from various feedstock oils. Regarding men; designations A and B1 are obtained from the same feedstock as A, B, and C. bitumen This refers to products produced by straight distillation.

Including 1 Physical characterization of specific oils that can be used in accordance with the present invention ABCDE viscosity cSt at 100’C 66.2 63.8 82. G 81.3 64.2 12(1(:y)cst 32.Ei 31.1 36.7 36.1 30. Density at 415℃ 0.984 0.963 0.989 0.982 0.9 53 flash point’CC0C324302252298300 pour point”C213226 3037 Refractive index at aniline point 'C70,279,064,866,078,070℃ 1.5340 1.5220 1.5344 1.5335 1.5199 Sulfur Content, mass% 3.62 1.29 4.2 1.26 1.12 Various oils A, B, , C, D and E are obtained from the various crude oils listed in Table 1.

Roaring Dan Changes in ring and ball temperature as a function of mutual content of bitumen A and oil A Bitumen Men/Oil% 85/15 80/20 75/25 70/30 65/35 Ring Ball temperature ℃ Upper part 138 132 128 110 108 Lower part 83 82 78 ilQ 108 capsules j.

tJEATc standards Non-ripened state Ripened state Binding agent: Ring and ball method, ℃　　110±5　≧110±15 Room temperature bending, ℃　≦-20≦-5 Elastic recovery rate, % ≧100 ≧25 Seat: Bending at room temperature, °C ≦-15≦0 Heat resistance, °C ≧100 ≧90 Binder (unsuitable filler) Ring and ball method, ℃ 120 Bending at room temperature, °C ≦-25 Elastic recovery rate, % 2150 Penetration at 25℃, 1/10mm Penetration at 54550℃, 1/1.0mm ≦120 needle size index ≦0.4 Ring and ball method gradient, °C (1) ≦10 sheet Bending at room temperature, °C≦-20 Heat resistance, °C ≧100 (1) A “ring and ball” gradient was created on the top and bottom of a sample of binder stored at 165°C for 5 days. Measurements are taken on samples taken from the top and the bottom; this slope is the Provides compatibility of various components.

Properties of the binder of the invention Binder A Binder B Ring and ball method, “C129130 Penetration at 25°C, 1. /'10mm 41 Penetration at 3850℃, 1/1 0mm 100 95 needle size index 0.4 0.4 Room temperature stretching, °C -30-30 Heat resistance Good Good Elastic recovery rate, % 150 150 Todoroki Properties of filled binder A ■　■　H Room temperature non-bending Elastic recovery rate 1. New condition j9 129 40 9g <-3031~750% 2. Ventilation device Aging for 7 days at 70°C in a stove with 128 34 90 <-28 -14 days 125 32 86 <-25-28 days 124 27 80 <-2231,5 ~ 100% for 2 months 120 24 70 <-1831,5 ~60% for 4 months 112 20 65 <-1731□5~40% for 6 months 104 18 51 <-1531, 5-25%3, heat resistance (at 90℃ for 6 months) No creep ■: Ring and ball method, ℃ ■ = Penetration at 25°C, (1/lornm) m, Penetration at 50°C, (1/1 0mm>Procedure Supplementary IE 1.Display of the incident PCT/US90101136 2. Name of the invention Composition for manufacturing seal membrane and its membrane 3. Person who makes corrections Relationship to the incident: Patent applicant address Name: Mobil Oil Corporation 4, Agent Address: Shin-Otemachi Building, 206-ku, 2-2-1 Otemachi, Chiyoda-ku, Tokyo 5. Subject of correction Translated international search report of the specification and claims, typewritten international search report US9001136

Claims (3)

[Claims] 1. Used in mixtures of SBS type block copolymers and oils for the production of seal membranes Certain bitumens that can be Hard bitumen with Newtonian properties derived from processing residual liquid in air ; Their viscosity at 135°C is 560-85 using a Saybolt Flor viscometer. 0s; They exhibit a "ring and ball" softening point of 65-74°C; their penetration at 25°C is 10 to 20/1/10 mm; and contains 20 to 35% by weight of asphaltene. The above-mentioned particular bitumen characterized in that: the quantity is indicated; 2. Mixtures that can be used to produce sealing membranes, which 55 to 75% by weight of the bitumen described in item 1; SBS type block copolymer 8-15% by weight; and a viscosity of 43-64 cSt at 100°C and a flash point of 2. 80-320°C and obtained by treating distillate with a solvent 15-35% by weight of a specific aromatic oil characterized by; A mixture as described above, characterized in that it comprises. 3. A sealing membrane comprising a mixture according to claim 2, an inert filler and A novel product characterized in that it is produced by a support.