DE1917424A1 - Floor coverings - Google Patents

Description

Dr. F. ZumsfeSn - Dr. E. Assmann

Dr. R. Koenig Berger

Dipl. Phys. R.-Holzbauer

Patent attorneys MOndiM 2, Bräufuiusstrafja 4/1 !!

CP 4414

THE DUHLOP COMPANY LIMITED Dunlop Houae, Ryder Street, St. London, S.W.I., England

Floor coverings

The present invention secures floor coverings in particular Yliee carpets or tufted carpets © *

Hicht-woven or, Yliesteppishe or tufted © Te nonaalerweise with a Riieksehisht ver @@ li © a _f ma au tuft in the carpet connect and fraying dee Tepplohe when g eschsxlttea wlrd ₉ su ^ erliind-arxu The Hiick achicht also serves to »increase the aesthetic value of carpets in so far as they increase the elasticity and the" grip "

improved.

909885/1606

ÖÄD OfilGiNAt

Xiatex compounds are conventionally used for the lamination of such carpets, but these compounds have the disadvantage that the water tends to penetrate the carpet and must then be removed. This disadvantage can be avoided if "hot melted" material is used, but in this case the applicability of the method is limited to materials which have a relatively low melting point. These fabrics perform poorly on certain physical properties such as dimensional stability and handle ^11.

In the method according to the invention for laminating a Non-woven carpets or a tufted carpet are on connect the carpet to at least two isocyanate groups and a compound having groups with active hydrogen atoms applied, which reacts with the compound having isoovanate groups to form a polyurethane is capable.

The present invention also includes Yliesteppiens or tufted carpet? with ®In®r Folyuratha & back.

The compound - with group with active hydrogen atoms includes toly & tbezpoljrole * polythioethers and polyesters. Suitable © folyStherpolyole aind f © ly @ sqratsliyl®nglykole, Polyozypropyleaglykole et al. Wl & ehpQljmwLB & te thereof, Polyoxy- ■ '. tetsametliyloisglylc ©! ® mrnd fri ©! ©, wi @ PQlyozgrpropylenetriols .

Polj @@ t © r siM the polyester _$ Hisinue oil formed from glycols and fsi & len u & d g such as adipic acid © "P &thalsäur®" imerized linoleum oil as derivatives thereof and from the above substances produced

Compound containing isogyanate groups can be aromatic s @ in, such as tolylenedilsooyanate »4» 4 ' ^Ä Diphenylm8tiiandiiso-

eyanat miü. Triphenyl _{methane triocyanate f} © dexr ei® can be aliphatic, such as hexemethylene diisocyanate, or it can form around prepolymers thereof.

Additives can be used in both the xeooyanate groups Material can also be included in the active hydrogen containing material or both. To such Additives include catalysts, fillers, and viscosity regulators.

Examples of catalysts that can be used include sodium phenolate, lead oleate, lead iotate, dibutyltin dilaurate, Sibutyl tin octoate, triethylenediamine and n-ethylethylenediamine. Examples of suitable fillers are ground whiting chalk, potassium carbonate, clays, silica, silicates, wood flour and ground cork Suitable viscosity regulators are methylene chloride, Trichlorethylene and methyl ethyl ketone.

The two components of the composition can be separated compounded and transferred to the rear via a mixing head. a carpet can be applied o Ms mixed material can be sprayed on carpet in a continuous stream or deposited in some other catfish.

They can also be used to create a lamination further Rüokseitonmaterial ftufzukaaohleren, for example a fabric underlay or a sole underlay »

If no additional underlay is used, the Composition can be applied directly to a moving carpet web and the layer of the applied Material can be hardened by heating. The material can be applied in a continuous stream from a spray head or it can be applied directly

0 ^ 885/1608

¹ 191 Ik 2 U

be »with the beading by means of a Bakel, a Slot nozzle or a combination thereof or by lick rollers can be regulated.

Alternatively, the carpet can be made with the uncured cover material between the nip of a roller and one heated hardening cylinder, both to regulate the thickness of the layer of backing material ale also serves to carry out its hardening. The surface of the drum can be made of a suitable non-adhesive material, such as silicone rubber or polytetrafluoroethylene, or the surface can be continuous P must be lubricated with a suitable release agent.

If a fabric backing is to be provided on the carpet, a web of fabric can continuously be applied to the uncured one Lamination can be applied. If a carpet is to be made with an underlay, the urethane composition can be laid out in such a way that it foams during curing, or a foam layer germs the lamination are connected. This can be achieved by using either a pre-formed layer of foam the lamination is connected, or by applying a moist foam to the lamination and the foam is gelled and hardened in situ.

The following examples are intended to further the invention illustrate «All parts are related to the custom.

example 1

Polyoxypropylene triol, molecular weight 6000 100.0 tolylene diisocyanate 4.5

Dibutyltin dilaurate 2

909865/16 06

After 6 to 8 minutes curing at 7O ⁰ C, a soft Kautsohukfilm is generated.

Example 2

Polyoxyethylene diol, molecular weight 2000 100.0 Iriphenyl methane triisocyanate 12.0

Sodium phenate 2.0

After 1 to 2 minutes, annealing at 70 ⁰ C, a tough, kautsohukartiger film is produced. This formulation cures faster than that of Example 1 and, because it has a lower viscosity, also shows greater penetration * Due to the greater modulus, the finished carpet also has a different "feel".

Example 3 Polyoxypropylenetriol, molecular weight 3000 100.0 Milled polymer isocyanate 42.0 Lead octoate 2.5

ground whiting chalk 300.0

! Erichlorethylene 2.0

The prepolymer isocyanate used is commercially available as "Daltooel" available.

This formulation cured at 70 ⁰ G in 1 minute to a tough, kautsohukartigen film. The filler used gives the film a higher modulus. Trichlorethylene is used to regulate the viscosity and thus the penetration.

909885/1606 *

Be 1 β pi el 4

Polyoxypropylenetriol, molecular weight 3000 10O ₉ O

Tolylenediiaooyanate 15.0

Water 1.0

Chalk 200 _t O

Triohlorethylene 1.0

Tin II ootoate 2.5

This composition cures at 7O ⁰ C in 4 minutes to a ziemlioh rigid foam material.

The carpets with reverse sides applied according to the invention show improved properties, for example in terms of dimensional stability and handle.

909885/1606

Claims (9)

Claims 1.) Method for laminating a fleece carpet or a tufted carpet, characterized in that you have a connection with at least two on the carpet leocyanate groups and a compound with groups with active hydrogen atoms, which are used to react with the Compound with isocyanate groups is capable of forming a polyurethane. 2. The method according to claim 1, characterized in that that the compound containing active hydrogen atoms, is a polyether polyol. 3. The method according to claim 1 or 2, characterized in that the compound containing leocyanate groups is an aromatic isocyanate * 4 * method according to one of the preceding claims, characterized in that the connection with at least two isocyanate groups and / or the compound with groups with active hydrogen atoms are provided with a catalyst « 5. The method according to claim 4> characterized in that the catalyst is sodium phenate. 6. The method according to any one of the preceding claims, characterized in that the compound with at least two isocyanate groups and / or the compound with groups provided with active water atoms with a filler are. 909885/1606 7. Method according to one of the preceding iUieprttche » characterized in that the connection with at least two isocyanate groups and / or the compound having groups with active hydrogen atoms with a viscosity regulator are provided. 8. The method according to any one of the preceding claims _r characterized in that the polyurethane-forming Zueam · * foamed menBetzung v / ill, to give a Polyurethanßchaumunterlage. 9. The method according to claim 1 to 7, characterized in that a show layer is applied to the polyurethane lamination. 9885/16 06