US3895082A — Polymer composition

Claim 1

Independent Claim 290 words

A polymeric composition consisting essentially of a composite of polymeric particles having a second portion grafted to a first portion, said first portion formed by the steps of: A. providing substantially spherical monomolecular particles, having an average diameter of about 60-20,000 millimicrons, a weight average molecular weight of at least 100 million, and which are rubbery at a temperature below 60*C, prepared by polymerizing, in a suitable reaction medium, a mixture of reactive compounds which contains, in each 100 parts of weight thereof x. about 75-99 parts of a monomEr system selected from the group consisting of C1 to C8 alkyl acrylate and a mixture consisting of a C1 to C8 alkyl acrylate with up to 25% by weight of said mixture of one or more monoethylenically unsaturated monomers selected from the group consisting of styrene, acrylonitrile, methacrylonitrile, and methacrylic acid; y. up to about 24 parts of allyl methacrylate; z. about 1-15 parts of a cross-linking agent, other than allyl methacrylate, having at least two polymerizable ethylenic double bonds per molecule, selected from the groups consisting of ethylene glycol dimethacrylate, tetramethylene glycol diacrylate, trimethylol propane triacrylate, tetraethylene glycol dimethacrylate, methylene bisacrylamide, methylene bismethacrylamide, divinyl benzene, vinyl methacrylate, vinyl crotonate, vinyl acrylate, vinyl acetylene, trivinyl benzene, glycerine trimethacrylate, pentaerythritol tetramethyacrylate, triallyl cyanurate, divinyl acetylene, divinyl ethane, divinyl sulfide, divinyl sulfone, triethylene glycol dimethacrylate, diallyl cyanamide, glycol diacrylate, ethylene glycol divinyl ether, diallyl phthalate, divinyl dimethyl silane, and glycerol trivinyl ether; and B. grafting to the reaction sites in (A) a second portion composed of a polyalkyl methacrylate of 1-8 carbon atoms in the alkyl group having an average molecular weight of about 1,000 to 150,000, wherein the ratio of said first portion to said second portion is 65:35 to 88:12.

Claim 2

Dependent Claim 290 words

A polymeric composition consisting essentially of a composite of polymeric particles having a second portion grafted to a first portion, said first portion formed by the steps of: A. providing substantially spherical monomolecular particles, having an average diameter of about 60-20,000 millimicrons, a weight average molecular weight of at least 100 million, and which are rubbery at a temperature below 60*C, prepared by polymerizing, in a suitable reaction medium, a mixture of reactive compounds which contains, in each 100 parts of weight thereof x. about 75-99 parts of a monomEr system selected from the group consisting of C1 to C8 alkyl acrylate and a mixture consisting of a C1 to C8 alkyl acrylate with up to 25% by weight of said mixture of one or more monoethylenically unsaturated monomers selected from the group consisting of styrene, acrylonitrile, methacrylonitrile, and methacrylic acid; y. up to about 24 parts of allyl methacrylate; z. about 1-15 parts of a cross-linking agent, other than allyl methacrylate, having at least two polymerizable ethylenic double bonds per molecule, selected from the groups consisting of ethylene glycol dimethacrylate, tetramethylene glycol diacrylate, trimethylol propane triacrylate, tetraethylene glycol dimethacrylate, methylene bisacrylamide, methylene bismethacrylamide, divinyl benzene, vinyl methacrylate, vinyl crotonate, vinyl acrylate, vinyl acetylene, trivinyl benzene, glycerine trimethacrylate, pentaerythritol tetramethyacrylate, triallyl cyanurate, divinyl acetylene, divinyl ethane, divinyl sulfide, divinyl sulfone, triethylene glycol dimethacrylate, diallyl cyanamide, glycol diacrylate, ethylene glycol divinyl ether, diallyl phthalate, divinyl dimethyl silane, and glycerol trivinyl ether; and B. grafting to the reaction sites in (A) a second portion composed of a polyalkyl methacrylate of 1-8 carbon atoms in the alkyl group having an average molecular weight of about 1,000 to 150,000, wherein the ratio of said first portion to said second portion is 65:35 to 88:12.

Claim 3

Dependent Claim 150 words

A PROCESS FOR PREPARING A POLYMERIC COMPOSITION WHICH COMPRISES A. PROVIDING SUBSTANTIALLY SPHERICAL MONOMOLECULAR PRTICLES, HAVING AN AVERAGE DIAMETER OF ABOUT 60-20,000 MILLIMICRONS, A WEIGHT AVERAGE MOLECULAR WEIGHT OF AT LEAST 100 MILLION, AND WHICH ARE RUBBERY AT A TEMPERATURE BELOW 60*C, PREPARED BY POLYMERIZING, IN A SUITABLE REACTION MEDIUM, A MIXTURE OF REACTIVE COMPOUNDS WHICH CONTAINS, IN EACH 100 PARTS OF WEIGHT THEREOF X. ABOUT 75-99 PARTS OF A MONOETHYLENICALLY UNSATURATED MONOMER HAVING AN ALKYL (C1-C8) ACRYLATE CONTENT OF ABOUT 75-100% BY WEIGHT, Y. UP TO ABOUT 24 PARTS OF ALLYL METHACRYLATE, AND Z. ABOUT 1-15 PARTS OF A CROSSLINKING AGENT, OTHER THAN ALLYL METHACRYLATE, HAVING AT LEAST TWO POLYMERIZABLE DOUBLE BONDS PER MOLECULE, AND B. GRAFTING TO THE EACTIVE SITES IN (A) A SECOND PORTION COMPOSED OF A POLYALKYL METHACRYLATE OF 1-8 CARBON ATOMS IN THE ALKYL GROUP HAVING AN AVERAGE MOLECULAR WEIGHT OF ABOUT 1,000 TO 150,000.

Claim 4

Dependent Claim 150 words

A PROCESS FOR PREPARING A POLYMERIC COMPOSITION WHICH COMPRISES A. PROVIDING SUBSTANTIALLY SPHERICAL MONOMOLECULAR PRTICLES, HAVING AN AVERAGE DIAMETER OF ABOUT 60-20,000 MILLIMICRONS, A WEIGHT AVERAGE MOLECULAR WEIGHT OF AT LEAST 100 MILLION, AND WHICH ARE RUBBERY AT A TEMPERATURE BELOW 60*C, PREPARED BY POLYMERIZING, IN A SUITABLE REACTION MEDIUM, A MIXTURE OF REACTIVE COMPOUNDS WHICH CONTAINS, IN EACH 100 PARTS OF WEIGHT THEREOF X. ABOUT 75-99 PARTS OF A MONOETHYLENICALLY UNSATURATED MONOMER HAVING AN ALKYL (C1-C8) ACRYLATE CONTENT OF ABOUT 75-100% BY WEIGHT, Y. UP TO ABOUT 24 PARTS OF ALLYL METHACRYLATE, AND Z. ABOUT 1-15 PARTS OF A CROSSLINKING AGENT, OTHER THAN ALLYL METHACRYLATE, HAVING AT LEAST TWO POLYMERIZABLE DOUBLE BONDS PER MOLECULE, AND B. GRAFTING TO THE EACTIVE SITES IN (A) A SECOND PORTION COMPOSED OF A POLYALKYL METHACRYLATE OF 1-8 CARBON ATOMS IN THE ALKYL GROUP HAVING AN AVERAGE MOLECULAR WEIGHT OF ABOUT 1,000 TO 150,000.

Claim 5

Dependent Claim 24 words

The composition of claim 1 wherein the alkyl acrylate in (A) (x) is butyl acrylate and the polyalkyl methacrylate of (B) is polymethyl methacrylate.

Claim 6

Dependent Claim 23 words

The process of claim 2 wherein the monomer in (A) (x) is butyl acrylate and the polyalkyl methacrylate in (B) is polymethyl methacrylate.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-07-14	1979-01-13	1979-07-15	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-07-14	1983-01-13	1983-07-15	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-07-14	1987-01-13	1987-07-15	$7700.00	Window Closed / Lapsed

Polymer composition

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