Tackifying Resin, Product Description: Escorez™ LC is a premium aromatic modified aliphatic hydrocarbon resin with a narrow molecular weight. Product datasheets and sales specifications for Escorez™ tackifying resins. Africa & Middle Escorez™ LC (AM & EU), 18, , Escorez™ , PRODUCT NAME: ESCOREZ series .. THE FOLLOWING MATERIALS: Petroleum hydrocarbon resin ECR | Escorez LC |.
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A hot melt pressure sensitive adhesive composition which includes a petroleum-based resin according to claims 1 to 3 and a polymer. The quantity of the petroleum resin used in combination with the block copolymer may range from about 70 to about parts by weight per parts of block copolymer. President’s blog Patent information: An example for such a stream is isobutylene Raffinate 1 ex DSM.
The patent is concerned with the manufacture of pressure sensitive adhesive tapes by applying a coating of a hot melt pressure sensitive adhesive HMPSA composition in the molten state to the surface of a tape substrate. Inventive step no Catchwords: The solvent used during the polymerization is pure toluene or plant recycled toluene. The S-I-S block copolymers can be selected from the group of polymers containing 0 to 30 parts per weight of styrene and 0 to 40 parts per weight of diblocks.
A more preferred range is from about 90 to about parts by weight per parts block copolymer. Because the decrease of the viscosity is not caused by adding aromatic monomers to the polymerization feed, the resin according to this invention has advantages over other well known resins used in this kind of application: Normally, the MMAP cloud point of commercially available non-modified aliphatic resins based on similar petroleum feed streams is 90 C or higher, whereas lower MMAP values could only be obtained with aromatic modified resins.
This disclosure did not allow the creation of a new range in combination with a generalization of the tackifier compound. Skg,min Shear to steel 70 C,0. We appreciate your input. A hot melt pressure sensitive adhesive composition comprising a mixture of: Jacob given at this congress and as depicted in this paper was very similar to the presentation in Munich represented by D29 and that reference was also made in D29 to this AFERA ecorez.
One form of utility is where the hot melt pressure sensitive adhesive is applied to a surface of a substrate, such as paper, foil or film and such substrates may be in the form of an adhesive tape or a label. D29, which was made esccorez to the public before the date of edcorez second priority 28 Novemberis therefore citable prior art.
ExxonMobil Escorez™ LC (AM & EU) Tackifying Resin
Admissibility of late filed requests: Claim 1 of auxiliary request 4 corresponds to Claim 1 of auxiliary request 3, except for the following modifications: The viscosity S drastically decreases when more catalyst is used. CN CNA en Therefore D29, which was made available to the public before the second priority date of 28 Novemberescoorez citable prior art. As the Respondents convincingly argued in the oral proceedings see point X. The use of a feed containing the cycloolefins and cyclodiolefins seems to broaden the molecular weight distribution escorex.
Example 6 Table 7 shows the results of several resins in a hot melt pressure sensitive adhesive composition in comparison to each other. Contrary to the argument of the Appellant, no such simplification of the case occurs by the late filing of these requests. EP describes the use of aliphatic and aromatic modified aliphatic resin in S-I-S based hot melt pressure sensitive adhesives.
Furthermore, D29 pointed on page to the considerably low melt viscosity of HMPSA compo sitions, including the petroleum resin Escorez E, under coating conditions in which high shear forces were present. Not all mentioned resins in the examples were prepared using exactly the same above mentioned feed streams but these compositions are given because these results are typical and represent all other used petroleum feeds and solvents.
Hot melt pressure sensitive adhesive composition useful for contact coating on heat sensitive substrates. Claim 1 of auxiliary request 2 corresponds to Claim 1 of auxiliary request 1, except that the component a was defined as follows:.
The coated substrate is then cooled. The Opponents based their objections on Articles a lack of novelty and lack of inventive step and c EPC and cited inter alia the following documents in support of the objections under Article a EPC:.
Because the Board and the parties could not reasonably be expected to deal with these new issues without adjournment of the proceedings – which contravenes the principle of procedural economy – auxiliary requests 1 to 4 were not admitted, in accordance with Article 10b 3 of the Rules of Procedure of the Boards of Appeal.
Adhesive compositions comprising block copolymers of a monovinylaromatic compound and butadiene. Apart from the deficiencies indicated with respect to auxiliary request 1, Claim 1 of auxiliary request 3 further suffered from the deficiency under Article 2 EPC that the range “from to parts by weight” defined for component b was not originally disclosed.
Subscribe to Premium Services Searches: Radial styrene-isoprene-butadiene multi-armed block copolymers and compositions and articles containing block copolymers. It was also observed that such resins had a better compatibility in aromatic solvents, as could 10 be seen by the lower MMAP cloud point.
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Patent information events Consult our calendar. Mention of the grant of European patent No. To determine the Gardner color the resin was mixed with reagent grade toluene at room temperature until all the resin was dissolved.
The resulting resin has a lower melt viscosity in a hot melt pressure sensitive composition. When the temperature is increased from 60 to 80 and lOO C the same trends for the resin properties were observed.
Other objects and features of the invention will be apparent from the following detailed description and the appending claims. The desired increase of the amount of cyclic 22033 in the aliphatic resins can e.