Grafting process of a Diels Alder adduct onto polypropylene
AssigneeSabic Global Technologies B.V.
InventorsGert Boven, Francesco Picchioni, Klaas Remerie, Chandrashekhar Lingannaiah, Senthil Kumar Minor, Jerome Vachon
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Abstract
The present invention relates to maleic acid derivatives polar group-containing polypropylene, the process to making the same by reactive extrusion in presence of a grafting agent, a polypropylene co- and/or homopolymer is put in contact with a Diels-Alder adduct which is the reaction product of a diene and a dienophile belonging to the group of maleic acid derivatives.
Claims14
A polar group-containing polypropylene having:
- MFI less than 10
- grafted polar group content between 0.3 and 5 wt %
- wherein the polar group is a maleic acid derivative;
- and wherein the polar group-containing polypropylene comprises at least a constituent unit represented by the following formula (1),
- a constituent unit represented by the following formula (2)
- and
- optionally a constituent unit represented by the following formula (3)
- in which X is CH2, O, S, or NH,
- when X is CH2, R is a saturated aliphatic group with C1 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides or R is an aromatic moiety with C5 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides,
- when X is O, S or NH, R is hydrogen or a saturated aliphatic group with C1 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides or R is an aromatic moiety with C5 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides,
- R′ is hydrogen or a saturated aliphatic group with C1 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides, or an aromatic moiety with C5 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides,
- Y is O, S, or NR″ when R″ is hydrogen, a saturated aliphatic group with C1 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides or R″ is hydrogen, an aromatic moiety with C5 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides.
A process for preparing polar group-containing polypropylene wherein the polar group is a maleic acid derivative grafted by reactive extrusion, in presence of a radical forming grafting agent, in which a polypropylene co- and/or homopolymer is put in contact with a Diels-Alder adduct which is the reaction product of a diene and a dienophile belonging to the group of maleic acid derivatives:
- maleic anhydrides, maleic imides or maleic thioanhydrides according to the Formula (4)
- wherein
- Y is O, S, or NR″ when R″ is hydrogen, a saturated aliphatic group with C1 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides or R″ is hydrogen, an aromatic moiety with Cs to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides;
- X is CH2, O, S, or NH;
- when X is CH2, R is a saturated aliphatic group with C1 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides or R is an aromatic moiety with C5 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides;
- when X is O, S or NH, R is hydrogen or a saturated aliphatic group with C1 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides or R is an aromatic moiety with C5 to C15 which may include functional groups selected from alcohols, thiols, ketones, aldehydes, ethers, carboxylic acids, carboxylic acid anhydrides, esters, amines, or amides.
Dependencies are inferred from the claim text.