KR970065575A - Aliphatic petroleum resins, softening point and molecular weight control method thereof and hot melt pressure-sensitive adhesive containing the same - Google Patents

Abstract

The present invention provides a) a ring and ball (R & B) softening point of 75 to 110 ° C., b) a weight average molecular weight (M _w ) of 1000 to 2600 Daltons, a z-average molecular weight (M _Z ) of 1900 to 5000 Daltons and less than 2.0. M _W / M _n c) petroleum aliphatic with less than 1.5% aromatic proton content for all protons measured by ¹ H-NMR, and d) mixed methylcyclohexane aniline cloud point (MMAP) below 90 ° C. Provide resin.

The resin according to the invention is characterized by a large amount of cyclic structures. Also disclosed is a method of independently controlling the R & B softening point and molecular weight of an aliphatic resin composition during its preparation by polymerization of a petroleum feed, characterized by increasing the amount of cyclic structure in the resin.

Description

Aliphatic petroleum resins, softening point and molecular weight control method thereof and hot melt pressure-sensitive adhesive containing the same

As this is a public information case, the full text was not included.

Claims (19)

a) Ring and ball (R & B) softening point of 75 to 110 ° C; b) For all protons measured by weight average molecular weight (M _w ) of 1000 to 2600 Daltons, z-average molecular weight (M _Z ) of 1900 to 5000 Daltons and less than 2.0 M _W / M _n c) ¹ H -NMR Petroleum-based aliphatic resins having an aromatic proton content of less than 1.5%, and a mixed methylcyclohexane aniline cloud point (MMAP) of 90 ° C. or less. The resin according to claim 1, wherein the RB softening point is 90 to 100 ° C. The resin of claim 1 or 2 having M _{W of} less than 2000 Daltons, M _{Z of} less than 4000 Daltons, and M _W / M _n of less than 2.0. Use of the resin according to any one of claims 1 to 3 for the preparation of high temperature melting point pressure sensitive adhesive compositions. Use of the resin according to any one of claims 1 to 3 as raw material for hydrogenation, water treatment and / or quenching processes to improve the color of the resin. A high temperature melt pressure sensitive adhesive composition comprising the petroleum resin and the polymer according to any one of claims 1 to 3. The polymer of claim 6 wherein the polymer is a styrene-isoprene-styrene (S-I-S) polymer, a styrene-butadiene (SB) polymer, a styrene-butadiene-styrene (SBS) polymer, an ethylene-vinylacetate (EVA) polymer and A hot melt pressure sensitive adhesive composition selected from butadiene-vinylacetate (BVA) polymers. 8. The high temperature melt pressure sensitive adhesive composition according to claim 7, wherein the polymer is an S-I-S block copolymer containing 10 to 30 parts by weight of styrene. The hot melt pressure sensitive adhesive composition according to claim 6, further comprising a weight oil. The hot melt pressure sensitive adhesive composition according to any one of claims 6 to 8, which contains 70 to 200 parts by weight of petroleum aliphatic resin, 100 parts by weight of polymer and 0 to 70 parts by weight of weight oil. The hot melt pressure sensitive adhesive composition according to any one of claims 6 to 9, which contains 90 to 150 parts by weight of petroleum aliphatic resin, 100 parts by weight of polymer and 5 to 50 parts by weight of weight oil. A) 100 parts by weight of styrene-isoprene-styrene-styrene (S-I-S) rubber, characterized by having a viscosity of 100,000 mPas or less as measured according to ASTM method D3236 using a Brookfield viscometer; b) Ring and ball (RB) softening point of 75 to 110 ° C., increase average molecular weight (M _W ) of 1000 to 2600 daltons, z − average molecular weight (M _Z ) of 1900 to 5000 daltons and M _w / N _n below 2.0 70 to 200 parts by weight of petroleum aliphatic resin having an aromatic proton content of less than 1.5% relative to the total protons measured by ¹ H-NMR; And c) 0 to 70 parts by weight of extender oil. The hot melt pressure sensitive adhesive composition of claim 12 having a viscosity of at most 80,000 mPas at 175 ° C. 14. The hot melt pressure sensitive adhesive composition of claim 13 having a viscosity of at most 35,00 to 50,000 mPas at 175 ° C. Use of a hot melt pressure sensitive adhesive composition as defined in any of claims 6 to 14 for producing an adhesive tape or adhesive label. A method for independently controlling the R & B softening point and molecular weight of an aliphatic resin composition during its preparation by polymerization of a petroleum feed, characterized by increasing the amount of cyclic structure in the resin. 17. The cyclic structure according to claim 16, wherein the cyclic structure is caused by one or more changes in the variables in the polymerization reaction: a) reaction temperature, b) catalytic amount, c) amount of chain transfer agent d) amount of cyclodiolefin component in the feed. Characterized in that the amount is increased. 18. The method of claim 16 or 17, wherein an increase in the annular structure is observed by measuring the MMAP cloud point of the petroleum resin. 18. The method according to claim 16 or 17, wherein an increase in the annular structure is observed by measuring the hot melt viscosity of the petroleum aliphatic resin or the hot melt pressure sensitive adhesive resin composition in which the resin is used. ※ Note: The disclosure is based on the initial application.