Polyolefin compositions for building materials

Patent metadata

Field	Value
Publication number	US-10669403-B2
Application number	US-201715419283-A
Country	US
Kind code	B2
Filing date	Jan 30, 2017
Priority date	Sep 27, 2013
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A polyolefin composition includes a polyolefin substrate having incorporated therein a nucleating agent and a filler, wherein the composition exhibits an impact strength of >35 in-lb measured according to ASTM D4226, and a coefficient of linear thermal expansion of <4.5×10E-05 in/in/ft measured according to ASTM D696. The polyolefin composition may further include one or more of an ultraviolet light absorber, a hindered amine light stabilizer, an antioxidant, a colorant, a flame retardant, and an antimicrobial compound. The polyolefin compositions may be useful for construction articles for outdoor use, for instance house siding, cladding, soffit or roofing.

First claim

What is claimed is:

1. An article of manufacture comprising: a polyolefin substrate having incorporated therein:
about 0.10 to about 1.9 weight percent, based on the weight of the polyolefin substrate, a ternary combination of hindered amine light stabilizers (HALS) selected from:
(2) bis(2,2,6,6-tetramethylpiperidin-4-yl) sebacate, (14) 1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine, and (20) 2,2,6,6-tetramethylpiperidin-4-yl octadecanoate;
(2) bis(2,2,6,6-tetramethylpiperidin-4-yl) sebacate, (14) 1-(2-hydroxy-2-methyl-propoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine, and (45) oligomeric condensate of 4,4′-hexamethylenebis(amino-2,2,6,6-tetra-methylpiperidine) and 2,4-dichloro-6-[(2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-s-triazine end-capped with 2-chloro-4,6-bis(dibutylamino)-s-triazine; or
(14) 1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine, (20) 2,2,6,6-tetramethylpiperidin-4-yl octadecanoate and (45) oligomeric condensate of 4,4′-hexamethylene-bis(amino-2,2,6,6-tetramethylpiperidine) and 2,4-dichloro-6-[(2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-s-triazine end-capped with 2-chloro-4,6-bis(dibutylamino)-s-triazine;

about 12 ppm to about 500 ppm, based on the weight of the polyolefin substrate, a nucleating agent comprising 2,2′-methylene-bis(4,6-di-tert-butylphenyl)phosphate, zinc glycerolate, aromatic trisamide compounds 1,3:2,4-bis-(3,4-dimethylbenzylidene)sorbitol 1,3:2,4-bis(4-methylbenzylidene)sorbitol, 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol, or a mixture of any two or more thereof;
about 15 wt % to about 40 wt %, based on the weight of the polyolefin substrate, of a filler comprising calcium carbonate; and
about 0.10 to about 2.5 weight percent, based on the weight of the polyolefin substrate, of an ultraviolet light absorber comprising hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate or 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate;
wherein:
any two of the ternary HALS combinations have a weight ratio from about 1:5 to about 5:1; and
the article exhibits an impact strength of >35 in-lb measured according to ASTM D4226, acceptable color uniformity in finished siding parts according to ASTM D6864, a low delta E color according to ASTM D2244 of ≤5.0, and a coefficient of linear thermal expansion of <4.5×10E-05 in/in/ft measured according to ASTM D696.

2. The article of manufacture of claim 1 , wherein the polyolefin substrate further comprises an additive selected from the group consisting of: one or more additional hindered amine light stabilizers, an antioxidant, a colorant, a flame retardant, and an antimicrobial compound.

3. The article of manufacture of claim 2 , wherein:
the one or more additional hindered amine light stabilizers are selected from the group consisting of (1) 1-cyclohexyloxy-2,2,6,6-tetramethyl-4-octadecylaminopiperidine; (3) bis(1-acetoxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (4) bis(1,2,2,6,6-pentamethylpiperidin-4-yl) sebacate; (5) bis(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (6) bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (7) bis(1-acyl-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (8) bis(1,2,2,6,6-pentamethyl-4-piperidyl) n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate (9) 2,4-bis[(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-6-(2-hydroxyethylamino-s-triazine; (10) bis(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl) adipate; (11) 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylamino]-6-chloro-s-triazine; (12) 1-(2-hydroxy-2-methylpropoxy)-4-hydroxy-2,2,6,6-tetramethylpiperidine; (13) 1-(2-hydroxy-2-methylpropoxy)-4-oxo-2,2,6,6-tetramethylpiperidine; (15) bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl) sebacate; (16) bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl) adipate; (17) 2,4-bis[N-[1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl]-N-butylamino]-6-(2-hydroxyethylamino)-s-triazine; (18) 4-benzoyl-2,2,6,6-tetramethylpiperidine; (19) di-(1,2,2,6,6-pentamethylpiperidin-4-yl) p-methoxybenzylidenemalonate; (21) bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl) succinate; (22) 1,2,2,6,6-pentamethyl-4-aminopiperidine; (23) 2-undecyl-7,7,9,9-tetramethyl-1-oxa-3,8-diaza-4-oxo-spiro[4,5]decane; (24) tris(2,2,6,6-tetramethyl-4-piperidyl) nitrilotriacetate; (25) tris-(2-hydroxy-3-(amino-(2,2,6,6-tetramethylpiperidin-4-yl)propyl) nitrilotriacetate; (26) tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butane-tetracarboxylate; (27) tetrakis-(1,2,2,6,6-pentamethyl-4-piperidyl)-1,2,3,4-butane-tetracarboxylate; (28) 1,1′-(1,2-ethanediyl)-bis-(3,3,5,5-tetramethylpiperazinone); (29) 3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decan-2,4-dione; (30) 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decane-2,4-dione; (31) 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidin-2,5-dione; (32) 3-dodecyl-1-(1,2,2,6,6-pentamethyl-4-piperidyl)pyrrolidine-2,5-dione; (33) N,N′-bis-formyl-N,N′-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine; (33a) bis(1-undecanyloxy-2,2,6,6-tetramethylpiperidin-4-yl)carbonate; (34) reaction product of 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylamino]-6-chloro-s-triazine with N,N′-bis(3-aminopropyl)ethylenediamine); (35) condensate of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid; (36) condensate of N,N′-bis(2,2,6,6-tetramethyl-4-piperidyl)-hexamethylenediamine and 4-tert-octylamino-2,6-dichloro-1,3,5-triazine; (37) condensate of N,N′-bis(2,2,6,6-tetramethyl-4-piperidyl)-hexamethylenediamine and 4-cyclohexylamino-2,6-dichloro-1,3,5-triazine; (38) condensate of N,N′-bis-(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and 4-morpholino-2,6-dichloro-1,3,5-triazine; (39) condensate of N,N′-bis-(1,2,2,6,6-pentamethyl-4-piperidyl)hexamethylenediamine and 4-morpholino-2,6-dichloro-1,3,5-triazine; (40) condensate of 2-chloro-4,6-bis(4-n-butylamino-2,2,6,6-tetramethylpiperidyl)-1,3,5-triazine and 1,2-bis(3-aminopropylamino)ethane; (41) condensate of 2-chloro-4,6-di-(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-triazine and 1,2-bis-(3-aminopropylamino)ethane; (42) a reaction product of 7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa-3,8-diaza-4-oxospiro-[4,5]decane and epichlorohydrin; (43) poly[methyl-(3-oxy-(2,2,6,6-tetramethylpiperidin-4-yl)propyl)] siloxane, CAS #182635-99-0; (44) reaction product of maleic acid anhydride-C 18 -C 22 -α-olefin-copolymer with 2,2,6,6-tetramethyl-4-aminopiperidine; (46) oligomeric condensate of 4,4′-hexamethylenebis(amino-1,2,2,6,6-pentamethylpiperidine) and 2,4-dichloro-6-[(1,2,2,6,6-pentamethylpiperidin-4-yl)butylamino]-s-triazine end-capped with 2-chloro-4,6-bis(dibutylamino)-s-triazine; (47) oligomeric condensate of 4,4′-hexamethylenebis(amino-1-propoxy-2,2,6,6-tetramethylpiperidine) and 2,4-dichloro-6-[(1-propoxy-2,2,6,6-tetramethylpiperidin-4-yl)butylaminol-s-triazine end-capped with 2-chloro-4,6-bis(dibutylamino)-s-triazine; (48) oligomeric condensate of 4,4′-hexamethylenebis(amino-1-acyloxy-2,2,6,6-tetramethylpiperidine) and 2,4-dichloro-6-R1-acyloxy-2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-s-triazine end-capped with 2-chloro-4,6-bis(dibutylamino)-s-triazine; (49) product obtained by reacting (a) with (b) where (a) is product obtained by reacting 1,2-bis(3-aminopropylamino)ethane with cyanuric chloride and (b) is (2,2,6,6-tetramethylpiperidin-4-yl)butylamine; and a mixture of any two or more thereof;
the antioxidant is selected from the group consisting of organic phosphorus stabilizer/hindered phenolic antioxidant combinations, dialkylhydroxylamine stabilizers, organic phosphorus stabilizer/dialkylhydroxylamine stabilizer combinations, amine oxide stabilizers, organic phosphorus stabilizer/amine oxide stabilizer combinations, and a mixture of any two or more thereof;
the colorant is selected from

Assignees

• Basf Se

Inventors

• Andrews Stephen Mark
• Fay Joseph James
• King Roswell Easton
• Zafar Mohammad
• Chen Zhisheng
• Thompson Thomas Friend
• Zuo Feng

Classifications

• C08K3/015

  Biocides (macromolecular substances as carriers for biocide material A01N25/10) · CPC title

• C08K2003/2224

  Magnesium hydroxide · CPC title

• C08L23/02

  not modified by chemical after-treatment · CPC title

• C08K5/0058

  Biocides; (macromolecular substances as carriers for biocide material A01N25/10) · CPC title

• C08K2003/265

  Calcium, strontium or barium carbonate · CPC title