Polymer composition

 

(57) Abstract:

Usage: to obtain a granulated molding of filled materials used for products of electronic and radio, in particular microscale, as well as electrical, automotive and other engineering industries. The inventive polymer composition comprises (wt.%): chemically resistant unsaturated polyester based on aliphatic and/or aromatic glycols and unsaturated dicarboxylic acid or its mixture with a saturated dicarboxylic acid or the product of the interaction of the specified unsaturated polyester with oxides of alkaline earth metal at a mass ratio of cations, alkaline earth metal and carboxyl groups(0,033-0,03):1-13,0-25,5, the oligomer of diallylphthalate - 2,5-15,0, polyorganosiloxane - product of cohydrolysis organosilicon monomers of methyl and/or methylphenylene type of functionality 3 - 1,0-15,0; salonpolster - 20,0-35,0; disperse the filler-25,0-53,0; grease - 1,0-4,0; the pigment is 0.1 to 4.0; led curing peroxide of Dicumyl is 1.5 to 5.0. The composition may further contain 0.5 to 4.2 wt.% tertbutylbenzene on 100 wt.% composition as a curing initiator. The composition is divided into pellets and pererabatyvalosj products while maintaining electrical insulation performance after exposure to aggressive environments stability flowability of the granules of the composition. 1 C.p. f-crystals, 1 table.

The invention relates to the field of producing granulated filled molding materials based on unsaturated polyesters used for products of electronic and radio, particularly for microscale, as well as electrical, automobile and other engineering industries.

Traditionally for the production of certain types of subminiature components for the electronics and the electronics industry in the domestic industry used ceramics. But the production of the ceramics and processing it into products processes are extremely time-consuming. Abroad for these purposes a loose granular materials, as a rule, on the basis of chemical-resistant unsaturated polyester, providing excellent electrical properties and recyclability of their products on avtomatizirovannom equipment methods of injection molding, press molding, etc.

Polyester molding materials have a specific trait in comparison with other types of thermosetting molding of composite materials (for example, melamine-formaldehyde, phenol-formaldehyde and other) at the stage of forming (especially complex thin-walled products), Zaki. This is particularly evident in the manufacture of miniature products. This lack of dimensional stability leads to the appearance of microdefects in the form of micro-cracks, chips, etc. visible at high magnification.

To obtain a molding compositions based on unsaturated polyesters, distinguished by good processability, no cracking, apply various modifying polymer additives.

Known composition based on unsaturated polyester (NPAF), chemically modified thermosetting polyorganosiloxane [1]

The composition contains (% ): 5-95 NPAF; 0,5-15 thermosetting polyorganosiloxane; 0,01-2 (0,3-0,42) of the catalyst of the process of interaction between polyorganosiloxane and NPAF (H2PtCl6tertbutylphenol; 0-70 (41-58) filler Al(OH)3, 0,80 (10-26) fiberglass, 0-0 (1-12) TiO pigment and others) and 0-10 (0,141,5) release agent (Zn stearate or acetobutyrate cellulose). The composition is obtained by mixing the above components with the subsequent interaction NPAF and PIC when heated in the molding process. As NPEP used styrene solutions of the products of polycondensation of maleic acid or anhydride, fumaric acid, phthalic sour is ringlike (for example, NPAF company Monsanta CRUSTIC D).

As the organosilicon component is used, the product of General formula, where R=H, aryl, amino, -C=C - or epoxypropyl.

< / BR>
Described polyorganosiloxanes are elastomers, which when heated in the molding process in the presence of catalyst H2PtCl6or tertbutylbenzene chemically interact with polyester resin.

The resulting composition is a so-called "dough" of the moulding composition, i.e., doughy premix, and is intended for the manufacture of electrical parts (insulation panels).

The described composition is not a dry granulate, and refers to another class polyester molding compositions, processing in which the product is impossible in automated production equipment without the use of additional expensive devices.

Known fiberglass press material (SPM) [2] based on fiberglass and binder containing polyethyleneimine resin, filler Aerosil and targeted supplements (Gidropress of cumene solution of naphthenate in styrene and a solution of dimethylaniline in styrene), as a means to polysiloxane resin with polyalkyleneglycol General formula:

< / BR>
where m6

R is a hydrocarbon radical, linear or isotrate when the ratio polyphenylsiloxane or polyalkyleneglycol resin with polyalkyleneglycol from 10:1 to 10:5 in the following ratio of components in the press material, the weight.h.

Polyester resin 100

Polyphenylsiloxane or polymethylphenylsiloxane resin 1-10

Polyalkyleneglycol 1-4

Gidrofobizirovannym Aerosil 1-3

Gidropress of cumene 1-6

9-10% cobalt naphthenate in styrene 1-8

8-10% solution of dimethylaniline in styrene of 0.25-3

Fiberglass 100-138

Described composition is a press material, not bulk molding granules. Used as the basis for connecting polyethyleneimine (for example, MO-3) is a styrene solution and not suitable for granular materials.

In the European patent [3] described molding composition based NPAF, in which as a regulator of the flow and the surface modifier is applied silicone product, representing siliconvalley copolymer of the formula.

place interaction

< / BR>
where R", R0hydrogen, alkyl (1-4), ar is Rolet, - methylstyrene, divinylbenzene, Acrylonitrile) solutions polycondensation products based on phthalic, terephthalic acids (or anhydrides), adipic, isophthalic acid and ethylene-, propylene-, dietilen-, dipropyleneglycol, butyleneglycol, neopentyl glycol, glycerol and 1,1 1-triethylborane.

In addition, the composition contains a curing initiators NPEP: tertbutylbenzene, tertBUTYLPEROXY, benzoyl peroxide, cumene hydroperoxide, methylethylketone (in quantities of from 0.3 to 3 wt%. on NPEP). The composition includes a curing accelerators (connection With), low-profile additives in the form of a 40% solution in styrene (polyurethane, polycaprolactam), fillers (Al(OH)3, asbestos, glass fiber, organic fiber). As thickening additives are oxides or hydroxides of metals I, II and III groups of the periodic system in quantities from 0.1 to 6%

The composition is supplied in paste form on the SMC machine where it is mixed with fiberglass. Next, the composition of the molded panel.

Described polyester composition is a sheet molding material, i.e., is not granulate. The use of liquid (styrene) resins cannot provide reguliruuschie fluidity, represents siliconvalley copolymer.

In the European patent [4] described a thermosetting composition, which in addition to thermosetting resin contains a special cured organopolysiloxane resin. The composition is intended to obtain a molding shaped products electronic and electrical industry with a low coefficient of linear expansion and low shrinkage, which reduces the number of defects in them. The composition consists of 100 century. including thermosetting resin (component a) and 1-100 century onward polyorganosiloxane (component b).

A component represents utverzhdennuyu organopolysiloxane resin containing at least 90% of the links R1R2R3SiO0,5and R4R4SiO0,5(at a ratio of from 0.1 to 3 and from 0 to 10% of the links R5R6SiO and SiO 4/2 where R1, R2, R3, R4, R5H and monovalent hydrocarbon radicals, such as methyl, ethyl, propyl, octyl, cyclohexyl, vinyl and other Cured resin in powder form are mixed with component A.

As thermosetting resin (component a) And the composition comprises an unsaturated polyester resin, phenolic, furan, carb which is styrene. In addition, the formulation includes curing agents for these resins, such as phthalic, pyromellitates, tetrahydro and hexahydrophthalic, succinoyl anhydrides, dizeliami, diamino-phenylmethane, metaphenylenediamine and hardeners phenolic Novolac resins. The composition may also contain metal salts of fatty acids, waxes, liquid polyorganosiloxanes, inorganic fillers [Al(OH)3, talc, clay, asbestos, fused and crystalline quartz, fiberglass] antipyrine and pigments.

Presented in the patent composition based liquid (styrene) resins cannot provide the bulk of the granules with the desired combination of properties (long-term preservation of flowability of the granules without compromising the technological and operational characteristics. Organosilicon component is a combination utverzhdenii organopolysiloxane resin, dispersed in the polyester resin in the form of very small particles.

It is known the use of mixtures of initiators to increase the rate of polymerization of unsaturated polyesters [6]

The patent describes the combination of peroxide benzoyl peroxide with atom With three deputies and directly associated with percomputer-2-peroxide, methyl-2-pentyl-2-peroxide. The object of polymerization are unsaturated esters (allyl) polycarboxylic acids.

There is also described a method of curing unsaturated polyesters to improve the tightness of the products based on them using a mixture of initiators (60% managedoperationparameter and 40% of dihydroperoxide of diisopropylbenzene) [7] the Curing is carried out at 80-90oWith over 1,0-1,3 PM

It is known the use of mixtures of peroxides to obtain a molded product of unsaturated polyesters[8, 9, 10, 11, 12] as the polymerization initiators are peroxide mixture of cyclohexanol and 1) perepelov, 2) dialkylanilines, 3) vallpregona, 4) hydroperoxides, 5) apoximately. Curing is carried out in the presence of accelerators, curing at to20oC. After completion of the curing process conduct heat treatment at a temperature not less than the activation temperature of perepelov.

Described pair of peroxides used for other purposes. The curing process occurs in other conditions.

In [13] described an inhibitory effect, which is manifested in slower gelation during curing NPEP in the presence of peroxide cyclohexanone with salt. Described pair of peroxides used for other purposes and in combination with a curing accelerator (g). As NPEP used liquid styrene resin-based MA, FA and propylene glycol (1,0:1,0:2.2 m). The described system does not contain fillers, and styrene NPEP not provide granular materials.

Closest to the technical essence and the achieved result to the molding composition is a composition for solid granular molding material described in the patent [5]

The main components are 10-45 h NPAF with a softening temperature of > 50oC, obtained by polycondensation of aliphatic glycol, maleic anhydride and isophthalic acid, 1-20 h epoxy resin (ES) with an epoxy equivalent of > 150, 0.1 to 10 h hardener ES, 0.3 to 10 h of the vinyl monomer range, 0.2 to 3 h of curing initiator NPAF, powder fillers, Zn stearate, peroxide Dicumyl.

As NPEP used products with a softening temperature of > 50oC based on fumaric, fanboy, isophthalic (terephthalic), adipic and other softening Temperature lying in the range of 60-120oC. Component is an epoxy resin bisphenola and phthalic anhydride. As cross-linking agents are the oligomer and the monomer diallylphthalate; vinyl comonomers, such as styrene, vinyltoluene, chloresterol, methacrylate, acrylamide, diacetonitrile, N-methylacrylamide, N-tributylamine etc.

The curing initiator is a peroxide of Dicumyl. As powdery fillers are used CaCO3soot. The reinforcing component of the filler is fiberglass. Lubricant is a stearate.

The obtained granulate is processed transfer, compression moulding and injection moulding. At 25 and 45oWith granular retains flowability during the week and 3 days, respectively.

In the present patent as a cross-linking monomer used derivatives of acrylamide, having poor water resistance. This leads to a strong deterioration of the electric characteristics after exposure to moisture. It also describes the granulate is not stable during storage.

Introduction to the composition up to 20 wt.h. epoxy resin and its hardener reduces the shelf life of the material, since the epoxy compositions have limited storage life due to premature curing.

The aim of the proposed specification is corrosive environments and stability flowability of the granules of the composition.

This goal is achieved in that the composition comprising chemically resistant unsaturated polyester based on aliphatic and cyclic glycols and maleic anhydride and/or dimethylterephthalate anhydride, and a crosslinking component, fillers, initiators, curing and conventional additives optionally contains polyorganosiloxane product (CO) hydrolysis of organosilicon monomers of methyl and/or methylphenylene type with functionality of 3, in the following ratio, wt.

NPAF 13,0-25,5

The oligomer of diallylphthalate (ODF) OF 2.5 TO 15.0

Polyorganosiloxane 1,0-15,0

Salonpolster 20,0-35,0

Dispersed napolnitel 25,0-53,0

Peroxide of Dicumyl 1,5-5,0

Tertbutylbenzene 0-4,0

Grease 1-4,0

The pigment is 0.1 to 4.0

Molding the granulated material is characterized by good electrical insulation properties, continued at a high level after exposure to chemically aggressive environments (water, solutions of alkalis and acids). Furthermore, the material stable during storage (12 months) without deterioration of properties and processing AIDS. Properties listed in the table.

The granulate is well processed by injection molding and all kinds of pressing the Oia, to 100 seconds. Products perfectly withstand machining: grinding, polishing, removal of the Burr. The treated surface has a minimum number of microdefects.

As a chemically resistant unsaturated polyesters can be used any solid products of the polycondensation of aliphatic and cyclic glycols (for example propylene glycol, oxypropylene the diphenylolpropane and tetrachloro (bromine) Dian, ethylene) with maleic anhydride and/or exporter, as well as their modification, for example, the products of the interaction of these NPAF with oxides of alkaline earth metals, characterized by an acid number 10-32 mg KOH/g, the ratio of cations, alkaline earth metal and carboxylic groups 0,0033-0,0311.

Scheme A. In chetyrehosnuju flask equipped with a stirrer, a bubbler for inert gas, a thermometer and a trap Dina and Country to collect condensation water loaded glycol (0.1-1 mol) and an acid component. The original mixture is heated up to to195-200oC and kept at this temperature to obtain a polyester With K. o'clock from 10-32 mg KOH/gr.

After which the melt is injected from 0.01 to 0.05% of oxides of alkaline-earth metals and maintained at to
2) the ratio of the cations of the metal (Me)KCOOH=(0,0033-0,03)/1.

Scheme B.

In chetyrehosnuju flask equipped with a stirrer, a bubbler for inert gas, a thermometer and a trap Dina and Country to collect condensate load glycol (0.1 to 1.1 mol), concentrated acid or its anhydride (0.3 to 0.65 m) in the desired ratio and 0.02 wt. (original components) acetate catalyst. The initial mixture is heated to t 175-185oC and are transesterification before the termination of the separation of methanol. The reaction mixture is cooled to t 110-115oC and enter the unsaturated acid component (0,35-0,7) raise t to 185-195oC condensation and lead to K. H. 10-32 mg KOH/g. After which the melt is injected from 0.01 to 0.05% of oxides of alkaline-earth metals and stand when operating the mixer in the synthesis of 1 hour.

The resulting oligoester characterized

1) K. H. from 10-32 mg KOH/g,

2) the relationship HE and COOH groups (1,7-5,75):1,

3) the ratio of metal cations and COOH groups (0,0033-0,03)/1.

As the crosslinking component used oligomer of dellitalia (ODF) with t square 95-110oC, M. M. 3000-8000 (TU 6-05-24-321-87).

As the reinforcing filler used salonpolster SP-A (TU 6-11-506-80, salonpolster BS-13-140 RUB-4 is to chalk, kaolin, calcite, Al(OH)3various types of talc (TRPN, micro-talc, TMK-28 and others).

In addition, the composition contains a lubricant (stearates of CA or Zn, paraffins), and pigment (lithopone, titanium dioxide, pigment blue phtalocyanines and others).

The invention features the use of a mixture of peroxide of Dicumyl (belongs to the group of dialkyl/aralkyl/peroxides) with TBPB (group perepelov) to improve the shape filled compositions. As an initiator curing serve peroxide of Dicumyl, tertbutylbenzene (TU 38.40255-83).

As an initiator curing serve peroxide of Dicumyl, tertbutylbenzene (TU 38.40255-83).

As polyorganosiloxanes used thermosetting products (co) hydrolysis (methyl and methylphenylene type) silicone monomers with a functionality of 3. Synthesis of polyorganosiloxane methyl type as follows: a mixture of methyltriclosan and dimethyldichlorosilane at a ratio of 9:1 is hydrolyzed by water in hydrolyzer with cooling. The temperature of the mixture should not exceed 20oC. the mixture is Then washed with water to pH 4-6. After that, the mixture is fed to the condensation, which ends on the product is characterized by a content of hydroxyl groups of up to 8% molecular weight of from 600 to 1500, polyorganosiloxane 1.

Methylphenylene thermosetting polyorganosiloxane synthesized similarly by cohydrolysis methyltriclosan - and phenyl-trichlorosilane when the ratio of initial components 1: 1 with subsequent condensation in the presence of a solvent (butyl acetate) and HCl acceptor (urea). After that, the solvent is distilled off and the resulting product is characterized by a molecular weight of from 2000 to 5000, polyorganosiloxane 2.

Example 1. In the melt NPAF on the basis of 1.0 mole of maleic anhydride with 1.1 mole of oxypropylated diphenylolpropane (K. H. 10 mg KOH/g) to impose a 0.05% MgO, the ratio of metal cations Me to COOH 0,0033/1.

Polyorganosiloxane methyl 1 type with a molecular mass of M 900 m and the content of hydroxyl groups of 4.2% synthesized according to the scheme described above.

All the components are mixed in a screw continuous mixer at to80-100oC in the following ratio, wt.

NPAF 25,5

ODF 7,5

Polyorganosiloxane 1 2,0

Salonpolster BS-13-140 RUB-4-88-1 20,0

Al(OH)325,0

Chalk 11,9

Stearate CA 3,0

TiO20,1

Peroxide of Dicumyl 5,0

The resulting composition is broken into granules with a size of 3-5 mm Granulate peerabad/SUP>. Mode molding - automatic. Products have good dimensional stability. Further, the products are subjected to a cycle of mechanical and chemical surface treatment (cleaning Burr, sprue grinding surface of the abrasive powders, washing products from abrasive, drying) and sorted with a 20-fold increase. Properties listed in the table.

Example 2. In the melt NPAF on the basis of 0.4 mol of dimethyl terephthalate, 1,1 mol of propylene glycol and 0.6 mole of maleic anhydride (K. H. 30 mg KOH/g) enter 0.01% ZnO, the ratio of metal cations Me to COOH=0,0033/1.

Polyorganosiloxane type-2 MF-50 M 2800 m and the content of hydroxyl groups 4% gain in accordance with P-68, followed by distillation of the solvent.

The components are mixed in a screw continuous mixer at to80-100oC in the following ratio:

NPAF 16,0

ODF 2,5

Polyorganosiloxane type-2 MF-50 5,0

Salonpolster SP-20,0

Filler for Noblestown 53,0

Stearate Zn 1,0

TiO20,5

Peroxide of Dicumyl 2,0

The composition is granulated to granules with a size of 2-5 mm and processed into products of example 1.

Example 3. In the melt NPAF based 15,88 g of maleic anhydride, 30,65 g oxypropane synthesis impose a 10 wt. from NPEP of polyorganosiloxane methyl 1 type M 1000 m and the content of hydroxyl groups of 4.9%

The resulting mixture is mixed with other components by rolling for 20 minutes at a temperature of rolls 80-95oC in the following ratio:

NPAF 20,0

ODF 8,5

Polyorganosiloxane 1 2,0

Salonpolster RDB 13-2640(88)-9 20,0

Al(OH)330,0

Kaolin 12,0

Pigment blue phthalocyanines 1,0

TBPB 2,0

Stearate Sa 2,0

Peroxide of Dicumyl 2,5

and crushed to granules with a size of 1-5 mm

Properties listed in the table.

Example 4. In the melt NPAF on the basis of 26.5 g of maleic anhydride, and 8.4 g of ethylene glycol and 65.1 oxopropylidene of tetrachordon (K. H. 25 mg KOH/g) add 0.03% of MgO, the ratio of metal cations and COOH 0,009/1.

Polyorganosiloxane type-2 MF-50 M 4200 m and the content of hydroxyl groups, with a 2.8% gain in accordance with the specifications followed by distillation of the solvent. The components are mixed in the mixer periodic action at to80-100oC for 10 minutes at a speed of mixing at 100 rpm in the following ratio:

NPAF 15,0

ODF 15,0

Polyorganosiloxane type-2 MF-50 2,2

Salonpolster SP-35,0

T is designed on the crusher type "Olmos". The granulate has a good flowability not change during the whole storage time (12 months), has a chemical resistance and excellent electrical insulating properties. Properties listed in the table.

Example 5. NPEP in example 1 is mixed with polyorganosiloxanes in example 4 and other components in screw continuous mixer at to80-100oC in the following ratio:

NPAF 13,0

ODF 10,0

Polyorganosiloxane type MT-50 1,0

Fiberglass 20,0

Al(OH)230,0

Calcite is 14.5

Stearate Zn 2,0

TiO34,0

Peroxide of Dicumyl 1,5

TBPB 4,0

and crushed to granules with a size of 3-5 mm Granulate is processed into products. Properties listed in the table.

Example 6. NPEP in example 1 is mixed with other components in screw continuous mixer at to80-100oC in the following ratio:

NPAF 19,6

ODF 7,9

Polyorganosiloxane type-2 MF-50 1,5

Salonpolster BS-13-OR-4-88-1 25

Talc TMK-28 28,5

Stearate CA 1,0

TiO20,5

Peroxide of Dicumyl 2,5

and crushed to granules with a size of 3-5 mm, the Obtained granulate is processed into products. Properties listed in the table.

Example 9 (comparative). NPEP in example 1 is mixed with other components in screw continuous mixer at to80-100oC in the following ratios:

NPAF 25,5

ODF 10,0

Polyorganosiloxane 1 0,5

Salonpolster BS-13-140 RUB-4-88-1 20,0 25,5

Chalk 11,4

Peroxide of Dicumyl 4,5

Stearate CA 3,0

Pigment phtalocyanine blue 0,1

and crushed on the edge of anicely). NPEP in example 1 is mixed with polyorganosiloxane type-2 MF-50 according to example 2 and other components in the continuous mixer at to80-100oC in the following ratios:

NPAF 19,6

ODF 6,9

Polyorganosiloxane 2 MF-50 16

Salonpolster 25

Calcite 28,5

Peroxide of Dicumyl 2,5

TiO20,5

Stearate Zn 1,0

and crushed to granules with a size of 2-4 mm Granulate is processed into products. Properties listed in the table.

The increase in the content of polyorganosiloxane over 15% is impractical because it does not lead to a significant improvement of the described properties, but increases the cost of the material.

Example 11. NPAF according to example 2 is mixed with other components in the mixer periodic operation at a temperature of 75-85oC in the following ratio:

NPAF 20

ODF 8,0

Salonpolster BS-13-140 RUB-4-88-1 80

Al(OH)330

Kaolin 14,7

Stearate Zn 1,0

Peroxide of Dicumyl 5,0

TBPB 0,3

TiO31,0

and crushed and granules with a size of 1-5 mm, the Obtained granulate is processed into products. The results are given in the table.

Example 12. NPAF according to example 2 is mixed with other components by rolling
Salonpolster SP-20,0

Al(OH)330,0

Calcite 14,0

Stearate Sa 2,0

TiO22,0

Peroxide of Dicumyl 1,5

TBPB 4,5

A composition with a content of the curing initiator TBPB > 4 wt. accompanied by premature curing of the weight directly on the rolls, because there is a strong heating of the mass. Mixing at lower temperatures does not allow homogenization of the components in the melt.

Example 13. In chetyrehosnuju flask equipped with a stirrer, a bubbler for inert gas, a thermometer and a trap Dean and stark for collecting condensation water load of 1.1 mol of oxopropylidene of diphenylolpropane and 1.0 mol of maleic anhydride. The original mixture is heated up to to195-200oC and kept at this temperature to obtain a polyester with K. H. 10 mg KOH/g After which the melt is injected 0.05% of MgO and maintained at to195oC for one hour. The resulting oligoester characterized

1) the ratio of HE and COOH 5,75/1,

2) the ratio of metal cations IU to COOH=0,0033/1.

Polyorganosiloxane methyl 1 type with a molecular mass of M 900 m and the content of hydroxyl groups of 4.2% synthesized according to the scheme described above.

NPAF option. 25,5

ODF 7,5

Polyorganosiloxane 1 2,0

Salonpolster BS-13-140 RUB-4-88-T 20,0

Al(OH)325,0

Chalk 11,9

Stearate CA 3,0

TiO20,1

Peroxide of Dicumyl 5,0

The resulting composition is broken into granules 3-5 mm Granulate is processed into products transfer pressing at temperature t 155-175oC and tank pressure P 30-100 kg/cm3. The mode forming auto. Products have good dimensional stability.

Further, the products are subjected to a cycle of mechanical and chemical surface treatment (cleaning Burr, sprue grinding surface of the abrasive powders, washing products from abrasive, drying) and sorted with a 20-fold increase. Properties listed in the table.

Example 14. In chetyrehosnuju flask according to example 13 load of 0.4 mole of isophthalic acid and 1.1 mol of propylene glycol and 0.02 wt. (original components) catalyst acetate Zn. The initial mixture is heated to t 175-1852C and are transesterification before the termination of the separation of methanol. The reaction mass is cooled to t 110-115oC and injected with 0.6 mole of maleic anhydride, raise t to 185-195oC condensation and lead to K. H. 30 mg KOH/g After which the melt is injected 0,01% ZnO and groups you 1,7/1,

2) the ratio of metal cations IU to COOH 0,0033/1yu

Polyorganosiloxane type-2 MF-50 M 2800 m and the content of hydroxyl groups 4% gain in accordance with THE P 564-68 with subsequent distillation of the solvent. The components are mixed at 80-100 toC in screw continuous mixer in the following ratio: NPAF 15,7; ODF 7,3; polyorganosiloxane 4,0; salonpolster 35,0; filler for Noblestown 30,5; lithopone 2,5; Stearate Sa 2,0; peroxide of Dicumyl 3,0.

Example 15. Synthesize NPAF scheme of example 13 on the basis of 38 g of propylene glycol 35.3 terephthalate and 26.7 g of maleic anhydride to K. H. 20 mg KOH/g

At the last stage of the synthesis impose a 10 wt. from NPEP of polyorganosiloxane methyl type M 1100 m and the content of hydroxyl groups of 4.9%

Then the resulting product is mixed by rolling at t 80-953C with other components within 20 minutes in the following ratio:

NPAF 20,0

ODF 8,5

Polyorganosiloxane 2 2,0

Salonpolster 20,0

Al(OH)230,0

Kaolin 12,0

Pigment blue phthalocyanines 1,0

Stearate Sa 2,0

TBPB 2,0

Peroxide of Dicumyl 2,5

Example 16. Unsaturated oligoester receive under the scheme of example 13 on the basis of the following which in the molten polyester is injected 0,03% MgO and incubated at working stirrer for 1 hour at t synthesis. NPAF characterized

1) the ratio of HE and COOH groups of 3.78/1,

2) the ratio of metal cations IU to COOH 0,021/1.

The components are mixed at 80-100 toC in the continuous mixer in the following ratio:

NPAF 15,0

ODF 15,0

Polyorganosiloxane 1 2,2

Salonpolster 35,0

Talc TRPN 25

Stearate CA 4,0

TiO21,0

Peroxide of Dicumyl 2,8

The resulting composition is crushed in the crusher of the type "Olmos". The granulate is not mixed, has excellent insulating properties.

1. Polymer composition comprising chemically resistant unsaturated polyester oligomer of diallylphthalate, the initiator of the peroxide curing Dicumyl modifying additive, glass and disperse the filler, a pigment and a lubricant, characterized in that as chemically resistant unsaturated polyester it contains a polyester based on aliphatic and/or aromatic glycols and unsaturated dicarboxylic acid or its mixture with a saturated dicarboxylic acid, or the product of the interaction of the specified unsaturated polyester with oxides of alkaline earth metal at a mass ratio of cations, alkaline earth metal and carboxylic groups (0,0033 0,03) 1, and as the s methyl and/or methylphenylene type of functionality 3 in the following ratio of the components of the composition, wt.

The unsaturated polyester, the above 13,0 25,5

The oligomer of diallylphthalate 2,5 15,0

Polyorganosiloxane product cohydrolysis organosilicon monomers of methyl and/or methylphenylene type of functionality 3 1 15

Salonpolster 20 35

Disperse the filler 25 53

Grease 1 4

The pigment is 0.1 to 4.0

Peroxide Dicumyl 1,5 5,0.

2. The composition according to p. 1, characterized in that as the initiator curing it additionally contains 0.5 to 4.2 wt. tert-butylbenzoate on 100 wt. of the composition.

 

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Cured composition // 2065469
The invention relates to the field of high molecular weight compositions, cured by polymerization type, and in particular to compositions with peroxide initiated radical polymerization, and can be used for impregnating, casting, adhesives and binders for press materials as "cold" and "hot curing

The rubber mixture // 2036941
The invention relates to the rubber industry, in particular to the rubber mixture based on ethylene-propylene rubber, which can be used in exposure temperatures up to 150aboutWith

The invention relates to the plastics industry

Polymer composition // 2007428
The invention relates to the field of polymeric compositions based on recycled polyethylene (PE), which is resistant to thermo-oxidative degradation by the introduction of modifying additives and can be used for the disposal of waste polyethylene

Polymer composition // 2002769
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